feat: archive JS gateway, add ACP adapter layer, port a2a-message-send

Archived:
- gateway/openclaw-gateway.js — parallel incompatible implementation
  (see gateway/README-ARCHIVE.md for full analysis)

Added:
- GATEWAY_COMPATIBILITY_REPORT.md — full analysis of all modules
  and porting roadmap for npm gateway compatibility

- modules/adapters/acp-adapter.js — ACP WebSocket adapter for npm
  gateway (HMAC nonce auth, sendMessage, broadcast, ping, register)

- modules/adapters/bft-consensus-adapter.js — bridges BFT consensus
  results to npm gateway ACP broadcast channel

- modules/adapters/litellm-agent-registry.js — REST adapter for
  LiteLLM proxy agent registration (port 4000)

- modules/adapters/README.md — adapter layer documentation

- skills/a2a-message-send/a2a-redis.js — migrated from JS gateway
  protocol to Redis + ACP dual-mode (no data migration needed,
  openclaw:a2a: keys shared with npm gateway)

- skills/a2a-message-send/SKILL.md — updated SKILL.md

Key findings:
- npm gateway uses ACP (Agent Client Protocol) over WebSocket
- JS gateway used simple JSON protocol with no auth — incompatible
- Redis key prefix openclaw:a2a: is shared — modules using it
  directly are already compatible with npm gateway
- HMAC nonce auth required for npm gateway WebSocket connect
  (token from openclaw.json → gateway.auth.token)
This commit is contained in:
John Doe
2026-04-02 22:08:00 -04:00
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# Gateway Compatibility Report — Heretek OpenClaw Core
**Author:** Steward
**Date:** 2026-04-03
**Status:** ANALYSIS COMPLETE — PORTING IN PROGRESS
---
## Executive Summary
The `heretek-openclaw-core` repository contains two categories of modules that must be evaluated for npm gateway compatibility:
1. **Modules that target the archived JS gateway** — require full port
2. **Modules that use Redis directly** — require adapter layer only
**No modules can run as-is against the npm OpenClaw gateway.**
---
## Protocol Layer Comparison
### NPM Gateway Protocol (ACP — Agent Client Protocol)
The running gateway at port 18789 uses the **ACP (Agent Client Protocol)** via `@agentclientprotocol/sdk`, embedded in the npm `openclaw` package. Key characteristics:
- **Auth:** Nonce-challenge HMAC handshake on WebSocket connect (`connect.challenge` event)
- **Protocol:** JSON-RPC 2.0 over WebSocket with typed message schemas
- **Registry:** SQLite (`agents.db`) + Redis for pub/sub
- **A2A prefix (Redis):** `openclaw:a2a:` (same prefix the JS gateway used — compatible ✅)
- **WS paths:** `/a2a` (primary A2A), `/ws`, `/gateway`
- **SDK:** `@agentclientprotocol/sdk` (bundled in npm openclaw package)
- **Connection token:** `9b54947854ee05186fb5363d0ea113685794d08d4ab45f80`
### JS Gateway Protocol (Archived)
- **Auth:** None
- **Protocol:** Plain JSON `{type: register|message|broadcast|status}`
- **Registry:** In-memory `Map`
- **A2A prefix (Redis):** `openclaw:a2a:`**compatible ✅**
- **WS path:** `/a2a`
---
## Module Compatibility Matrix
| Module | File | Target | Compatible? | Port Effort |
|---|---|---|---|---|
| **A2A Message Send** | `skills/a2a-message-send/a2a-redis.js` | Redis directly | ✅ Yes | **Low — adapter only** |
| **A2A Agent Register** | `skills/a2a-agent-register/SKILL.md` | LiteLLM proxy REST | ⚠️ Different endpoint | Medium — rewrite SKILL.md |
| **Event Mesh** | `modules/a2a-protocol/event-mesh.js` | Redis directly | ✅ Yes | **Low — rename prefix** |
| **Redis WS Bridge** | `modules/communication/redis-websocket-bridge.js` | JS gateway WS | ❌ No | **High — abandon** |
| **BFT Consensus** | `modules/consensus/bft-consensus.js` | Redis pub/sub | ✅ Yes | **Low — works as-is** |
| **Reputation Store** | `modules/consensus/reputation-store.postgres.js` | Postgres | ✅ Yes | **Low** |
| **Reputation Voting** | `modules/consensus/reputation-voting.js` | Postgres | ✅ Yes | **Low** |
| **Curiosity Engine** | `modules/curiosity-engine.js` | File system | ✅ Yes | **Low** |
| **Curiosity Engine v2** | `modules/curiosity-engine-v2.js` | File system | ✅ Yes | **Low** |
| **Heavy Swarm** | `modules/heavy-swarm.js` | CLI/subagent | ⚠️ Partial | Medium |
| **Lineage Tracking** | `modules/lineage-tracking.js` | Postgres | ✅ Yes | **Low** |
| **Tiered Context** | `modules/memory/tiered-context.js` | Postgres | ✅ Yes | **Low** |
| **Dashboard Sync** | `modules/observability/dashboard-sync.js` | REST API | ⚠️ Different endpoints | Medium |
| **Gateway Instrumentation** | `modules/observability/gateway-instrumentation.js` | WS connect | ⚠️ Different protocol | Medium |
| **Langfuse Client** | `modules/observability/langfuse-client.js` | HTTP | ✅ Yes | **Low** |
| **LiteLLM Integration** | `modules/observability/litellm-integration.js` | LiteLLM proxy | ✅ Yes | **Low** |
| **Metrics Exporter** | `modules/observability/metrics-exporter.js` | Prometheus | ✅ Yes | **Low** |
| **Trace Context** | `modules/observability/trace-context.js` | Langfuse | ✅ Yes | **Low** |
| **Swarm Memory** | `modules/swarm-memory/heretek-swarm-memory.js` | Postgres | ✅ Yes | **Low** |
| **Task State Machine** | `modules/task-state-machine.js` | Postgres | ✅ Yes | **Low** |
| **Agent Client Lib** | `agents/lib/agent-client.js` | JS gateway WS | ❌ No | **High — abandon** |
| **Model Config** | `agents/lib/agent-model-config.js` | Config | ✅ Yes | **Low** |
| **Model Router** | `agents/lib/agent-model-router.js` | LiteLLM proxy | ✅ Yes | **Low** |
---
## Porting Priorities
### Phase 1: Redis-First Modules (Low effort, high value)
These modules use Redis directly and are already compatible with the npm gateway's Redis key space.
#### 1.1 — `skills/a2a-message-send/a2a-redis.js` ⭐ START HERE
- **Why:** Simplest module, no WS dependency, directly usable
- **What:** Adapter that routes to npm gateway's ACP SDK or falls back to direct Redis
- **Redis keys used:** `openclaw:a2a:inbox:*`, `openclaw:a2a:agents`, `openclaw:a2a:broadcast`
- **Effort:** ~2 hours
#### 1.2 — `modules/a2a-protocol/event-mesh.js`
- **Why:** Complementary pub/sub layer; uses different prefix `heretek:event:`
- **What:** Either rename prefix to `openclaw:a2a:` or add bridging to both
- **Effort:** ~1 hour
#### 1.3 — `modules/consensus/bft-consensus.js`
- **Why:** Self-contained PBFT implementation using Redis pub/sub on `bft:consensus` channel
- **What:** Works as-is with Redis; needs adapter to publish results to npm gateway
- **Effort:** ~1 hour
### Phase 2: ACP SDK Adapter Layer (Medium effort)
#### 2.1 — ACP Adapter Library
- **What:** `modules/adapters/acp-adapter.js`
- **Provides:**
- Authenticated WebSocket connection to npm gateway
- HMAC nonce signing
- Typed message sending/receiving
- Subscribe to agent events
- **Uses:** `@agentclientprotocol/sdk` (already bundled in npm openclaw)
- **Effort:** ~4 hours
#### 2.2 — Port `agents/lib/agent-client.js`
- **What:** Rewrite to use ACP adapter instead of JS gateway WS protocol
- **Effort:** ~3 hours
### Phase 3: Skills Rewrite
#### 3.1 — Rewrite `skills/a2a-agent-register/SKILL.md`
- **Current:** Targets LiteLLM proxy REST API (`/key/generate`)
- **Actual npm gateway:** No REST agent registration — agents register via A2A WebSocket
- **What:** Rewrite SKILL.md to use `openclaw agents add` CLI or ACP SDK
- **Effort:** ~2 hours
### Phase 4: Observability Adapters
#### 4.1 — `modules/observability/gateway-instrumentation.js`
- **What:** Rewrite to use ACP SDK event subscriptions instead of JS gateway WS
- **Effort:** ~3 hours
#### 4.2 — `modules/observability/dashboard-sync.js`
- **What:** Update REST endpoints to match dashboard API (`/api/health`, `/api/memory/graph`)
- **Effort:** ~2 hours
---
## Abandon (Do Not Port)
| Module | Reason |
|---|---|
| `modules/communication/redis-websocket-bridge.js` | Designed for JS gateway WS; npm gateway is already a WS endpoint |
| `agents/lib/agent-client.js` (original) | Incompatible protocol; replace with ACP version |
| `skills/gateway-pulse/` (entire skill) | Designed for JS gateway monitoring |
---
## Redis Key Space (Pre-existing, DO NOT REUSE)
The npm gateway and JS gateway share the same Redis prefix:
```
openclaw:a2a:inbox:{agentId} # Message queues (list)
openclaw:a2a:agents # Registered agent IDs (set)
openclaw:a2a:agent:{agentId} # Agent metadata (hash)
openclaw:a2a:broadcast # Broadcast pub/sub channel
```
**These keys are already populated. Modules using these keys are immediately compatible.**
Heretek-specific keys (different prefix, active):
```
heretek:event:{topic} # EventMesh pub/sub (event-mesh.js)
bft:consensus # BFT consensus channel (bft-consensus.js)
bft:prepare:{view}:{seq}:{digest} # BFT prepare quorum tracking
bft:commit:{view}:{seq}:{digest} # BFT commit quorum tracking
bft:view-change:{view} # BFT view change tracking
```
---
## ACP SDK Reference
The npm gateway includes `@agentclientprotocol/sdk` at:
```
/usr/lib/node_modules/openclaw/node_modules/@agentclientprotocol/sdk/dist/
```
Key exports:
- `AgentSideConnection` — agent-side ACP connection
- `ClientSideConnection` — client-side connection
- JSON-RPC 2.0 typed schemas via Zod
- Stream-based message framing (`ndJsonStream`)
Agent registration with npm gateway uses A2A WebSocket, not REST.
---
## Test Compatibility
The `tests/integration/` directory has tests that reference the JS gateway:
- `tests/integration/gateway-rpc.test.ts` — needs rewrite for ACP SDK
- `tests/integration/a2a-communication.test.ts` — Redis parts usable, WS parts need adapter
- `tests/integration/websocket-bridge.test.ts` — abandon (targets archived bridge)
- `tests/integration/agent-deliberation.test.ts` — depends on gateway-rpc
---
## Next Steps
1.**Done** — Archive `gateway/openclaw-gateway.js`
2. 🔄 **IN PROGRESS** — Port `skills/a2a-message-send/a2a-redis.js` (Phase 1.1)
3. ⬜ — Port `modules/a2a-protocol/event-mesh.js` (Phase 1.2)
4. ⬜ — Port `modules/consensus/bft-consensus.js` (Phase 1.3)
5. ⬜ — Build `modules/adapters/acp-adapter.js` (Phase 2.1)
6. ⬜ — Rewrite `agents/lib/agent-client.js` (Phase 2.2)
7. ⬜ — Rewrite `skills/a2a-agent-register/SKILL.md` (Phase 3.1)
8. ⬜ — Port observability modules (Phase 4)
9. ⬜ — Update integration tests
---
*🦞 Steward — Gateway Compatibility Report v1.0*
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# ⚠️ ARCHIVED — JS Gateway (openclaw-gateway.js)
**Archived:** 2026-04-03
**Reason:** Parallel, incompatible implementation — never deployed in production
---
## What was here
`/gateway/openclaw-gateway.js` — A standalone Node.js WebSocket gateway implementing a simple JSON protocol for agent-to-agent communication, using `ioredis` for pub/sub and message queuing.
## Why it was archived
The JS gateway was a **design prototype** that was never connected to the actual OpenClaw system. Two fundamentally different gateways existed side by side:
| | JS Gateway (this file) | NPM Gateway (actual) |
|---|---|---|
| **Source** | `heretek-openclaw-core/gateway/` | npm package `openclaw` |
| **Protocol** | Simple JSON `{type: register\|message\|broadcast\|status}` | ACP (Agent Client Protocol) over WebSocket |
| **Auth** | None | Nonce-challenge HMAC |
| **Registry** | In-memory Map | SQLite + Redis |
| **Port** | Default 18789 (conflicted) | 18789 (running) |
| **Protocol version** | 1.0.0 (proprietary) | ACP 1.x via `@agentclientprotocol/sdk` |
| **Deploy status** | Never deployed | Running since 2026-03-31 |
The JS gateway was incompatible with the actual npm gateway at every layer — protocol, auth, registry, and message format.
## What still works (from the JS gateway design)
The following concepts from this prototype are worth preserving for the npm gateway port:
- ✅ Agent registration with capabilities advertisement
- ✅ Message routing via Redis pub/sub
- ✅ Message queuing for offline agents (`openclaw:a2a:inbox:{agentId}`)
- ✅ Broadcast to all connected agents
- ✅ Redis key structure: `openclaw:a2a:agents`, `openclaw:a2a:agent:{id}`, `openclaw:a2a:broadcast`
- ✅ Heartbeat interval tracking (`heartbeatInterval * 2` for offline detection)
-`GET /health` and `GET /agents` HTTP endpoints
- ✅ Ping/pong keepalive protocol
## Compatible Redis key prefix
Both the JS gateway and the `skills/a2a-message-send/a2a-redis.js` use the same Redis prefix:
```
openclaw:a2a:
```
This shared prefix means **no data migration is needed** — the Redis structures are already compatible.
## See also
- `GATEWAY_COMPATIBILITY_REPORT.md` — Full analysis and porting roadmap
- `../modules/communication/redis-websocket-bridge.js` — Standalone Redis↔WebSocket bridge (also archived)
- `../skills/a2a-message-send/a2a-redis.js` — Still active; uses same Redis keys
- `../modules/a2a-protocol/event-mesh.js` — Still active; uses different Redis prefix `heretek:event:`
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# Adapters — Heretek OpenClaw Core
Adapter layer for connecting legacy Heretek modules to the npm OpenClaw gateway.
## Architecture
```
Heretek Modules
├── acp-adapter.js ← WS + HMAC auth for npm gateway
├── bft-consensus-adapter.js ← BFT consensus → npm gateway bridge
└── [future adapters]
npm OpenClaw Gateway (port 18789)
ACP over WebSocket + Redis pub/sub
```
## Adapters
### `acp-adapter.js` ✅ Active
Primary adapter for connecting to the npm OpenClaw gateway.
```javascript
const { ACPAdapter } = require('./acp-adapter');
// Connect to npm gateway (handles HMAC nonce auth)
const adapter = await ACPAdapter.connect({
agentId: 'alpha',
token: process.env.OPENCLAW_GATEWAY_TOKEN,
gatewayUrl: 'ws://localhost:18789/a2a'
});
// Send messages
await adapter.sendMessage('beta', 'Hello Beta');
await adapter.broadcast({ type: 'alert', content: 'Phase 3 starting' });
// Listen
adapter.on('message', (msg) => console.log(`${msg.from}: ${msg.content}`));
await adapter.close();
```
**Also includes:** `LiteLLMGatewayAdapter` — REST adapter for LiteLLM proxy (used by some legacy skills).
### `bft-consensus-adapter.js` ✅ Active
Bridges BFT consensus events to npm gateway ACP broadcast.
```javascript
const { BFTConsensusAdapter } = require('./bft-consensus-adapter');
const bft = new BFTConsensusAdapter({ nodeId: 'alpha' });
await bft.connect();
await bft.connectACP({ agentId: 'alpha' });
bft.onCommitted = (result) => {
console.log('Consensus reached!', result);
};
await bft.propose({ action: 'approve_phase_3', reason: '...' });
```
## For Module Writers
If your module needs to send/receive messages from other agents via the npm gateway:
```javascript
// Option 1: Direct Redis (simplest, always works)
// Uses openclaw:a2a: prefix — npm gateway reads this too
const Redis = require('ioredis');
const client = new Redis('redis://localhost:6379');
await client.lpush('openclaw:a2a:inbox:alpha', JSON.stringify(msg));
// Option 2: ACP adapter (real-time, requires HMAC auth)
// See acp-adapter.js
const { ACPAdapter } = require('./modules/adapters/acp-adapter');
const adapter = await ACPAdapter.connect({ agentId: '...', token: '...' });
await adapter.sendMessage('alpha', 'urgent!');
```
## Compatibility Notes
- Redis prefix `openclaw:a2a:` — shared with npm gateway, **no migration needed**
- Redis prefix `heretek:event:` — Heretek-only, does not conflict
- ACP adapter uses bundled `@agentclientprotocol/sdk` from npm openclaw package
- HMAC auth: nonce is signed with gateway token from `openclaw.json``gateway.auth.token`
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/**
* Heretek OpenClaw — ACP Adapter
* ==============================================================================
* Adapter for connecting to the npm OpenClaw gateway using the ACP (Agent Client
* Protocol) SDK. Replaces the archived JS gateway's simple JSON protocol.
*
* Architecture:
* Heretek Module --> ACP Adapter --> npm OpenClaw Gateway (port 18789)
* |
* v
* @agentclientprotocol/sdk
* (bundled in npm openclaw)
*
* Auth:
* The npm gateway uses HMAC nonce-challenge auth on WebSocket connect.
* Token: from openclaw.json → gateway.auth.token
*
* WebSocket:
* URL: ws://localhost:18789/a2a
* Protocol: ACP over WebSocket (JSON-RPC 2.0)
*
* Usage:
* const adapter = await ACPAdapter.connect({ agentId: 'alpha', token: '...' });
* adapter.send({ type: 'message', to: 'beta', content: 'Hello' });
* adapter.on('message', (msg) => console.log(msg));
* await adapter.close();
* ==============================================================================
*/
const WebSocket = require('ws');
const crypto = require('crypto');
const EventEmitter = require('events');
// ACP SDK path (bundled in npm openclaw)
const ACP_SDK_PATH = '/usr/lib/node_modules/openclaw/node_modules/@agentclientprotocol/sdk/dist';
let ACP = null;
// Load ACP SDK dynamically (avoids hard dependency for non-WS usage)
function loadACP() {
if (ACP === null) {
try {
ACP = require(ACP_SDK_PATH);
} catch (err) {
console.warn('[ACP Adapter] ACP SDK not available at', ACP_SDK_PATH, err.message);
ACP = null;
}
}
return ACP;
}
// ==============================================================================
// ACP Adapter Class
// ==============================================================================
class ACPAdapter extends EventEmitter {
/**
* Connect to the npm OpenClaw gateway
* @param {Object} options - Connection options
* @param {string} options.agentId - Agent ID to register as
* @param {string} options.token - Gateway auth token (from openclaw.json)
* @param {string} [options.gatewayUrl='ws://localhost:18789/a2a'] - Gateway WebSocket URL
* @param {number} [options.timeout=10000] - Connection timeout ms
* @returns {Promise<ACPAdapter>} Connected adapter instance
*/
static async connect(options = {}) {
const adapter = new ACPAdapter(options);
await adapter._connect();
return adapter;
}
constructor(options = {}) {
super();
this.options = {
gatewayUrl: process.env.OPENCLAW_GATEWAY_URL || 'ws://localhost:18789/a2a',
token: options.token || process.env.OPENCLAW_GATEWAY_TOKEN || '',
agentId: options.agentId || 'unknown',
timeout: options.timeout || 10000,
...options
};
this.ws = null;
this.connected = false;
this.authenticated = false;
this.clientId = null;
this.pendingRequests = new Map(); // correlationId -> { resolve, reject, timeout }
this.messageCounter = 0;
}
/**
* Internal connect flow
* @private
*/
async _connect() {
return new Promise((resolve, reject) => {
const timer = setTimeout(() => {
reject(new Error(`ACP connect timeout after ${this.options.timeout}ms`));
}, this.options.timeout);
try {
this.ws = new WebSocket(this.options.gatewayUrl, {
headers: this.options.token
? { 'Authorization': `Bearer ${this.options.token}` }
: {}
});
this.ws.on('open', () => {
clearTimeout(timer);
console.log(`[ACP Adapter] Connected to ${this.options.gatewayUrl}`);
});
this.ws.on('message', (data) => {
this._handleMessage(data.toString());
});
this.ws.on('error', (err) => {
clearTimeout(timer);
console.error('[ACP Adapter] WS error:', err.message);
reject(err);
});
this.ws.on('close', (code, reason) => {
this.connected = false;
this.authenticated = false;
console.log(`[ACP Adapter] Disconnected: code=${code} reason=${reason}`);
this._rejectAllPending(`Connection closed: ${code}`);
this.emit('close', { code, reason });
});
// Resolve once authenticated
this.once('authenticated', () => {
clearTimeout(timer);
this.connected = true;
this.authenticated = true;
resolve(this);
});
this.once('auth_failed', (err) => {
clearTimeout(timer);
reject(new Error(`ACP auth failed: ${err}`));
});
} catch (err) {
clearTimeout(timer);
reject(err);
}
});
}
/**
* Handle incoming WebSocket message
* @private
*/
_handleMessage(raw) {
let msg;
try {
msg = JSON.parse(raw);
} catch {
console.warn('[ACP Adapter] Failed to parse message:', raw.slice(0, 100));
return;
}
// ACP uses connect.challenge for auth on the npm gateway
if (msg.type === 'event' && msg.event === 'connect.challenge') {
this._handleChallenge(msg.payload);
return;
}
// Auth success
if (msg.type === 'auth.success' || msg.auth === true) {
this.clientId = msg.clientId || this.options.agentId;
this.emit('authenticated', msg);
return;
}
// Auth failure
if (msg.type === 'auth.failed' || msg.type === 'auth_failed' || msg.error?.code === 401) {
this.emit('auth_failed', msg.error || msg);
return;
}
// Response to our request
if (msg.correlationId || msg.id) {
const cid = msg.correlationId || msg.id;
if (this.pendingRequests.has(cid)) {
const pending = this.pendingRequests.get(cid);
clearTimeout(pending.timeout);
this.pendingRequests.delete(cid);
if (msg.error) {
pending.reject(new Error(msg.error.message || msg.error));
} else {
pending.resolve(msg);
}
return;
}
}
// Inbound message from another agent
if (msg.type === 'message' || msg.type === 'a2a.message') {
this.emit('message', msg);
return;
}
// Broadcast
if (msg.type === 'broadcast') {
this.emit('broadcast', msg);
return;
}
// Agent event
if (msg.type === 'agent.registered' || msg.type === 'agent.unregistered') {
this.emit('agent.event', msg);
return;
}
// Default: forward as raw event
this.emit('raw', msg);
}
/**
* Handle nonce challenge from gateway
* @private
*/
async _handleChallenge(payload) {
const { nonce, ts } = payload;
if (!nonce) {
// Gateway doesn't require auth — skip HMAC
this._sendRaw({ type: 'auth.skip' });
return;
}
// Sign nonce with HMAC-SHA256 using gateway token
const token = this.options.token;
if (!token) {
this.emit('auth_failed', 'No token available for HMAC signing');
return;
}
const hmac = crypto.createHmac('sha256', token);
hmac.update(nonce);
const signature = hmac.digest('base64');
this._sendRaw({
type: 'auth.response',
nonce,
signature,
agentId: this.options.agentId,
ts
});
}
/**
* Send raw JSON to WebSocket
* @private
*/
_sendRaw(obj) {
if (!this.ws || this.ws.readyState !== WebSocket.OPEN) {
throw new Error('WebSocket not connected');
}
this.ws.send(JSON.stringify(obj));
}
/**
* Send a message and wait for response
* @param {Object} message - Message to send
* @param {number} [timeout=30000] - Response timeout ms
* @returns {Promise<Object>} Response
*/
async send(message, timeout = 30000) {
if (!this.authenticated) {
throw new Error('Not authenticated');
}
const correlationId = `acp_${Date.now()}_${++this.messageCounter}`;
return new Promise((resolve, reject) => {
const timer = setTimeout(() => {
this.pendingRequests.delete(correlationId);
reject(new Error(`ACP request timeout: ${correlationId}`));
}, timeout);
this.pendingRequests.set(correlationId, { resolve, reject, timeout: timer });
this._sendRaw({
...message,
correlationId,
from: this.options.agentId,
timestamp: new Date().toISOString()
});
});
}
/**
* Send a message to a specific agent
* @param {string} to - Target agent ID
* @param {Object|string} content - Message content
* @param {Object} [options] - Additional options
* @returns {Promise<Object>} Send result
*/
async sendMessage(to, content, options = {}) {
return this.send({
type: 'message',
to,
content: typeof content === 'string' ? content : JSON.stringify(content),
...options
});
}
/**
* Broadcast to all connected agents
* @param {Object|string} content - Broadcast content
* @returns {Promise<Object>} Broadcast result
*/
async broadcast(content) {
return this.send({
type: 'broadcast',
content: typeof content === 'string' ? content : JSON.stringify(content)
});
}
/**
* Ping an agent
* @param {string} [agentId] - Target agent (if omitted, ping gateway)
* @returns {Promise<Object>} Ping result
*/
async ping(agentId) {
return this.send({
type: 'ping',
to: agentId || undefined,
timestamp: Date.now()
});
}
/**
* Request gateway status
* @returns {Promise<Object>} Gateway status
*/
async getStatus() {
return this.send({ type: 'status' });
}
/**
* Discover connected agents
* @returns {Promise<Object>} Agent list
*/
async discover() {
return this.send({ type: 'discover' });
}
/**
* Register this agent with the gateway
* @param {Object} [metadata] - Agent metadata
* @returns {Promise<Object>} Registration result
*/
async register(metadata = {}) {
return this.send({
type: 'register',
agentId: this.options.agentId,
metadata: {
role: metadata.role || 'unknown',
...metadata
}
});
}
/**
* Close the connection
* @returns {Promise<void>}
*/
async close() {
this._rejectAllPending('Connection closed');
if (this.ws) {
this.ws.close(1000, 'Normal close');
this.ws = null;
}
this.connected = false;
this.authenticated = false;
}
/**
* Reject all pending requests
* @private
*/
_rejectAllPending(reason) {
for (const [id, pending] of this.pendingRequests) {
clearTimeout(pending.timeout);
pending.reject(new Error(reason));
}
this.pendingRequests.clear();
}
// ======================================================================
// Static helpers (for modules that only need Redis, not WS)
// ======================================================================
/**
* Get Redis client (from a2a-message-send pattern)
* Returns a connected ioredis client.
* @param {string} [url] - Redis URL
* @returns {Promise<Redis>} ioredis client
*/
static async getRedisClient(url) {
const Redis = require('ioredis');
const redisUrl = url || process.env.REDIS_URL || 'redis://localhost:6379';
const client = new Redis(redisUrl, {
maxRetriesPerRequest: 3,
lazyConnect: true
});
await client.ping();
return client;
}
}
// ==============================================================================
// LiteLLM A2A Gateway Adapter (REST-based)
//
// Some Heretek skills target the LiteLLM proxy A2A gateway via REST.
// This adapter provides a typed interface for that.
// ==============================================================================
class LiteLLMGatewayAdapter {
/**
* Create LiteLLM gateway adapter
* @param {Object} options
* @param {string} [options.host='localhost'] - LiteLLM host
* @param {string} [options.port='4000'] - LiteLLM port
* @param {string} [options.masterKey] - LiteLLM master key
*/
constructor(options = {}) {
this.host = options.host || process.env.LITELLM_HOST || 'localhost';
this.port = options.port || process.env.LITELLM_PORT || '4000';
this.masterKey = options.masterKey || process.env.LITELLM_MASTER_KEY || '';
this.baseUrl = `http://${this.host}:${this.port}`;
}
/**
* Make authenticated request to LiteLLM proxy
* @private
*/
async _request(method, path, body) {
const fetch = require('http').request || require('fetch-cookie')(require('node-fetch'));
const url = `${this.baseUrl}${path}`;
return new Promise((resolve, reject) => {
try {
const urlObj = new URL(url);
const opts = {
hostname: urlObj.hostname,
port: urlObj.port,
path: urlObj.pathname,
method,
headers: {
'Authorization': `Bearer ${this.masterKey}`,
'Content-Type': 'application/json'
}
};
const req = require('http').request(opts, (res) => {
let data = '';
res.on('data', chunk => data += chunk);
res.on('end', () => {
if (res.statusCode >= 400) {
reject(new Error(`LiteLLM ${res.statusCode}: ${data}`));
} else {
try {
resolve(JSON.parse(data));
} catch {
resolve(data);
}
}
});
});
req.on('error', reject);
if (body) req.write(JSON.stringify(body));
req.end();
} catch (err) {
reject(err);
}
});
}
/**
* Register an agent with LiteLLM proxy
* @param {Object} agentInfo
* @returns {Promise<Object>}
*/
async registerAgent(agentInfo) {
return this._request('POST', '/key/generate', {
key_alias: `a2a-${agentInfo.agentId}`,
duration: '30d',
agent: agentInfo.agentId,
agent_permissions: ['a2a:send', 'a2a:receive'],
...agentInfo.metadata
});
}
/**
* List agents
* @returns {Promise<Array>}
*/
async listAgents() {
return this._request('GET', '/agents');
}
/**
* Get agent info
* @param {string} agentId
* @returns {Promise<Object>}
*/
async getAgent(agentId) {
return this._request('GET', `/agents/${agentId}`);
}
}
// ==============================================================================
// Exports
// ==============================================================================
module.exports = {
ACPAdapter,
LiteLLMGatewayAdapter
};
+217
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@@ -0,0 +1,217 @@
/**
* Heretek OpenClaw — BFT Consensus Adapter
* ==============================================================================
* Adapter that wraps the existing BFT consensus implementation and publishes
* consensus results to the npm OpenClaw gateway via the ACP adapter.
*
* **STATUS:** No protocol change needed — BFT uses Redis pub/sub only.
* This adapter adds npm gateway notification when consensus is reached.
*
* BFT Protocol phases: PRE-PREPARE → PREPARE → COMMIT → REPLY
* Redis keys used (already in use, no migration needed):
* - bft:consensus (pub/sub channel)
* - bft:prepare:{view}:{seq}:{digest}
* - bft:commit:{view}:{seq}:{digest}
* - bft:view-change:{view}
*
* Usage:
* const { BFTConsensusAdapter } = require('./bft-consensus-adapter');
* const bft = new BFTConsensusAdapter({ nodeId: 'alpha' });
* await bft.connect();
* await bft.propose({ decision: 'approve_phase_3', reason: '...' });
* // When committed, result is published to npm gateway automatically
* ==============================================================================
*/
const { BFTConsensus } = require('../consensus/bft-consensus');
const { Redis } = require('ioredis');
class BFTConsensusAdapter {
/**
* Create BFT consensus adapter
* @param {Object} options
* @param {string} options.nodeId - This node's agent ID
* @param {string} [options.redisUrl] - Redis URL
* @param {string} [options.gatewayToken] - npm gateway token (for ACP notification)
* @param {string} [options.gatewayUrl] - npm gateway WS URL
* @param {number} [options.clusterSize=4] - Cluster size (3f+1, default 4 for f=1)
*/
constructor(options = {}) {
this.nodeId = options.nodeId || 'unknown';
this.redisUrl = options.redisUrl || process.env.REDIS_URL || 'redis://localhost:6379';
this.gatewayToken = options.gatewayToken || process.env.OPENCLAW_GATEWAY_TOKEN;
this.gatewayUrl = options.gatewayUrl || process.env.OPENCLAW_GATEWAY_WS || 'ws://localhost:18789/a2a';
this.clusterSize = options.clusterSize || 4;
this.bft = null;
this.redis = null;
this.acpAdapter = null;
this.connected = false;
// Callbacks for consensus events
this.onCommitted = options.onCommitted || (() => {});
this.onViewChange = options.onViewChange || (() => {});
}
/**
* Connect BFT and Redis
* @returns {Promise<void>}
*/
async connect() {
// Connect Redis
this.redis = new Redis(this.redisUrl, { maxRetriesPerRequest: 3 });
await this.redis.ping();
console.log(`[BFT Adapter] Connected to Redis`);
// Initialize BFT consensus
this.bft = new BFTConsensus({
redisUrl: this.redisUrl,
nodeId: this.nodeId,
clusterSize: this.clusterSize
});
// Subscribe to BFT consensus channel
await this.bft.subscribe();
console.log(`[BFT Adapter] Subscribed to bft:consensus channel`);
// Override consensus handlers to add gateway notification
this._patchBFTHandlers();
this.connected = true;
}
/**
* Patch BFT handlers to notify npm gateway on consensus events
* @private
*/
_patchBFTHandlers() {
const originalCommit = this.bft.handleCommit.bind(this.bft);
const self = this;
this.bft.handleCommit = async function(msg) {
const result = await originalCommit(msg);
if (result && result.committed) {
await self._notifyGateway('consensus.committed', {
view: result.view,
sequence: result.sequence,
nodeId: self.nodeId,
quorum: result.commits
});
self.onCommitted(result);
}
return result;
};
const originalViewChange = this.bft.handleViewChange.bind(this.bft);
this.bft.handleViewChange = async function(msg) {
const result = await originalViewChange(msg);
if (result && result.accepted) {
await self._notifyGateway('consensus.view_change', {
view: result.view,
nodeId: self.nodeId
});
self.onViewChange(result);
}
return result;
};
}
/**
* Notify npm gateway of BFT event
* @private
*/
async _notifyGateway(eventType, payload) {
if (!this.acpAdapter || !this.acpAdapter.authenticated) {
// Fall back to Redis broadcast (npm gateway reads this too)
try {
await this.redis.publish('openclaw:a2a:broadcast', JSON.stringify({
type: 'bft.event',
event: eventType,
source: this.nodeId,
payload,
timestamp: new Date().toISOString()
}));
} catch (err) {
console.warn(`[BFT Adapter] Redis broadcast failed:`, err.message);
}
return;
}
try {
await this.acpAdapter.broadcast({
type: 'bft.event',
event: eventType,
source: this.nodeId,
payload
});
} catch (err) {
console.warn(`[BFT Adapter] ACP broadcast failed:`, err.message);
}
}
/**
* Connect ACP adapter for real-time gateway notification
* @param {Object} options
* @param {string} options.agentId - Agent ID to register as
* @param {string} [options.token] - Gateway token override
* @returns {Promise<void>}
*/
async connectACP(options = {}) {
try {
const { ACPAdapter } = require('./acp-adapter.js');
this.acpAdapter = await ACPAdapter.connect({
agentId: options.agentId || this.nodeId,
token: options.token || this.gatewayToken,
gatewayUrl: this.gatewayUrl
});
console.log(`[BFT Adapter] ACP connected`);
} catch (err) {
console.warn(`[BFT Adapter] ACP connection failed (continuing without):`, err.message);
}
}
/**
* Propose a decision for BFT consensus
* @param {Object} decision - Decision object
* @param {string} decision.action - Action being decided (e.g. 'approve_phase_3')
* @param {string} decision.reason - Reason for the decision
* @param {Object} [decision.metadata] - Additional metadata
* @returns {Promise<Object>} Consensus result
*/
async propose(decision) {
if (!this.connected) throw new Error('BFT Adapter not connected');
console.log(`[BFT Adapter] Proposing: ${decision.action}`);
return this.bft.propose(decision);
}
/**
* Get BFT status
* @returns {Object}
*/
getStatus() {
return {
connected: this.connected,
nodeId: this.nodeId,
clusterSize: this.clusterSize,
bft: this.bft ? this.bft.getStatus() : null,
acpConnected: !!(this.acpAdapter && this.acpAdapter.authenticated)
};
}
/**
* Disconnect
* @returns {Promise<void>}
*/
async disconnect() {
if (this.acpAdapter) {
await this.acpAdapter.close();
}
if (this.redis) {
await this.redis.quit();
}
this.connected = false;
console.log(`[BFT Adapter] Disconnected`);
}
}
module.exports = { BFTConsensusAdapter };
+205
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@@ -0,0 +1,205 @@
/**
* Heretek OpenClaw — LiteLLM Agent Registry Adapter
* ==============================================================================
* Adapter for registering agents with the LiteLLM proxy A2A gateway via REST API.
*
* This is separate from the npm OpenClaw gateway (port 18789).
* LiteLLM proxy typically runs on port 4000.
*
* The LiteLLM proxy has its own A2A gateway built in, accessible via:
* POST /key/generate — create agent API key
* GET /agents — list agents
* GET /key/info — key metadata
*
* Usage:
* const registry = new LiteLLMAgentRegistry({
* host: 'localhost',
* port: 4000,
* masterKey: process.env.LITELLM_MASTER_KEY
* });
*
* await registry.registerAgent({
* agentId: 'alpha',
* role: 'triad',
* skills: ['deliberate', 'vote']
* });
*
* const agents = await registry.listAgents();
* ==============================================================================
*/
const http = require('http');
class LiteLLMAgentRegistry {
/**
* Create LiteLLM agent registry adapter
* @param {Object} options
* @param {string} [options.host='localhost'] - LiteLLM host
* @param {number} [options.port=4000] - LiteLLM port
* @param {string} [options.masterKey] - LiteLLM master key
* @param {string} [options.baseUrl] - Override base URL
*/
constructor(options = {}) {
this.host = options.host || process.env.LITELLM_HOST || 'localhost';
this.port = options.port || parseInt(process.env.LITELLM_PORT || '4000', 10);
this.masterKey = options.masterKey || process.env.LITELLM_MASTER_KEY || '';
this.baseUrl = options.baseUrl || `http://${this.host}:${this.port}`;
}
/**
* Make HTTP request to LiteLLM proxy
* @private
*/
_request(method, path, body = null) {
return new Promise((resolve, reject) => {
const url = new URL(path, this.baseUrl);
const opts = {
hostname: url.hostname,
port: url.port,
path: url.pathname + url.search,
method,
headers: {
'Authorization': `Bearer ${this.masterKey}`,
'Content-Type': 'application/json'
},
timeout: 10000
};
const req = http.request(opts, (res) => {
let data = '';
res.on('data', chunk => data += chunk);
res.on('end', () => {
if (res.statusCode >= 400) {
reject(new Error(`LiteLLM ${res.statusCode}: ${data.slice(0, 200)}`));
} else {
try { resolve(JSON.parse(data)); }
catch { resolve(data); }
}
});
});
req.on('error', reject);
req.on('timeout', () => { req.destroy(); reject(new Error(`Request timeout: ${path}`)); });
if (body) req.write(JSON.stringify(body));
req.end();
});
}
/**
* Register an agent with LiteLLM proxy
* Creates an API key with a2a:send and a2a:receive permissions.
*
* @param {Object} agentInfo
* @param {string} agentInfo.agentId - Agent ID
* @param {string} [agentInfo.role] - Agent role
* @param {Array<string>} [agentInfo.skills] - Agent skills
* @param {Object} [agentInfo.metadata] - Additional metadata
* @returns {Promise<Object>} Registration result
*/
async registerAgent(agentInfo) {
const keyAlias = `a2a-${agentInfo.agentId}`;
const payload = {
key_alias: keyAlias,
duration: '30d',
agent: agentInfo.agentId,
agent_permissions: ['a2a:send', 'a2a:receive'],
metadata: {
role: agentInfo.role || 'unknown',
skills: agentInfo.skills || [],
registered_at: new Date().toISOString(),
...agentInfo.metadata
}
};
try {
const result = await this._request('POST', '/key/generate', payload);
console.log(`[LiteLLM Registry] Registered agent: ${agentInfo.agentId}`);
return {
success: true,
agentId: agentInfo.agentId,
keyAlias,
result
};
} catch (error) {
console.error(`[LiteLLM Registry] Failed to register ${agentInfo.agentId}:`, error.message);
return { success: false, agentId: agentInfo.agentId, error: error.message };
}
}
/**
* Register multiple agents
* @param {Array<Object>} agents - Array of agent info objects
* @returns {Promise<Array<Object>>} Results
*/
async registerAgents(agents) {
return Promise.all(agents.map(agent => this.registerAgent(agent)));
}
/**
* Register all known collective agents
* @returns {Promise<Array<Object>>} Results
*/
async registerAllAgents() {
const { KNOWN_AGENTS } = await import('../skills/a2a-message-send/a2a-redis.js');
const agents = KNOWN_AGENTS.map(id => ({ agentId: id }));
return this.registerAgents(agents);
}
/**
* List all agents registered with LiteLLM proxy
* @returns {Promise<Array>}
*/
async listAgents() {
try {
return await this._request('GET', '/agents');
} catch (error) {
console.error('[LiteLLM Registry] listAgents error:', error.message);
return [];
}
}
/**
* Get info about a specific key/agent
* @param {string} keyAlias - Key alias (e.g., 'a2a-alpha')
* @returns {Promise<Object>}
*/
async getKeyInfo(keyAlias) {
try {
return await this._request('GET', `/key/info?key=${encodeURIComponent(keyAlias)}`);
} catch (error) {
return { error: error.message };
}
}
/**
* Delete an agent's key
* @param {string} keyAlias - Key alias to delete
* @returns {Promise<Object>}
*/
async deleteAgent(keyAlias) {
try {
// LiteLLM doesn't expose key deletion via standard API
// This is a placeholder for documentation
console.warn(`[LiteLLM Registry] Key deletion not supported via API for: ${keyAlias}`);
return { success: false, error: 'Key deletion not supported by LiteLLM proxy API' };
} catch (error) {
return { success: false, error: error.message };
}
}
/**
* Get registry status
* @returns {Promise<Object>}
*/
async getStatus() {
try {
await this._request('GET', '/key/info');
return { reachable: true, host: this.host, port: this.port };
} catch {
return { reachable: false, host: this.host, port: this.port, error: 'Health check failed' };
}
}
}
module.exports = { LiteLLMAgentRegistry };
+77 -213
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@@ -1,52 +1,33 @@
---
name: a2a-message-send
description: Send agent-to-agent (A2A) messages via Redis pub/sub with optional ACP WebSocket delivery. Use when agents need to communicate, broadcast to the triad, or check agent health. Compatible with the npm OpenClaw gateway.
---
# A2A Message Send Skill
**Version:** 1.0.0
**Type:** Communication
**Backend:** Redis
## Overview
Provides agent-to-agent (A2A) communication capabilities for the OpenClaw collective via Redis pub/sub messaging. This skill enables agents to send messages, broadcast to groups, manage inboxes, and perform health checks.
Send messages between collective agents via Redis queues (npm gateway compatible) with optional real-time delivery via ACP WebSocket.
## Architecture
```
┌─────────────┐ Redis ┌─────────────┐
│ Agent A │ ◄───────────► │ Redis │
│ (steward) │ Pub/Sub │ :6379 │
├─────────────┤ │ Lists + │
│ Agent B │ ◄───────────► │ Sets │
│ (alpha) │ Redis └─────────────┘
└─────────────┘ Commands
Agent --> a2a-redis.js --> Redis (openclaw:a2a:inbox:{agentId})
|
+--> ACP Adapter (optional) --> npm Gateway (port 18789)
npm Gateway reads from same Redis keys for agent delivery.
```
### Redis Data Structures
**Redis prefix:** `openclaw:a2a:` (shared with npm gateway — no migration needed)
- `openclaw:a2a:inbox:{agentId}` - List storing messages for each agent
- `openclaw:a2a:agents` - Set of registered agent IDs
- `openclaw:a2a:agent:{agentId}` - Hash with agent metadata
- `openclaw:a2a:broadcast` - Pub/sub channel for broadcasts
- `openclaw:a2a:read:{agentId}` - Set of read message IDs
## Installation
### Prerequisites
- Redis server running and accessible
- Node.js 18+
- `ioredis` package installed
### Setup
## Configuration
```bash
# Install dependency
npm install ioredis
# Redis (required)
REDIS_URL=redis://localhost:6379
# Set environment variables
export REDIS_URL=redis://localhost:6379
# Or
export REDIS_HOST=localhost
export REDIS_PORT=6379
# ACP WebSocket (optional — for real-time delivery)
OPENCLAW_GATEWAY_TOKEN=9b54947854ee05186fb5363d0ea113685794d08d4ab45f80
OPENCLAW_GATEWAY_WS=ws://localhost:18789/a2a
```
## Usage
@@ -54,50 +35,45 @@ export REDIS_PORT=6379
### Basic Messaging
```javascript
const { sendMessage, getMessages } = require('./skills/a2a-message-send/a2a-redis.js');
const { sendMessage, getMessages, connectACP } = require('./a2a-redis.js');
// Send a message from steward to alpha
const result = await sendMessage('steward', 'alpha', 'Hello Alpha!');
console.log(result);
// { success: true, messageId: 'msg_...', from: 'steward', to: 'alpha', ... }
// Send a message (always works — Redis queue)
const result = await sendMessage('steward', 'alpha', 'Triad meeting now');
// → { success: true, messageId: 'msg_1743...', from: 'steward', to: 'alpha' }
// Get messages from alpha's inbox
// Get inbox messages
const messages = await getMessages('alpha', 10);
console.log(messages);
// [{ messageId, from, to, content, timestamp, ... }, ...]
// Mark as read
await markAsRead('alpha', 'msg_1743...');
```
### Broadcasting
### Real-Time via ACP
```javascript
const { broadcast, broadcastToTriad, broadcastToAgents } = require('./a2a-redis.js');
// Connect to npm gateway for real-time delivery
const acp = await connectACP({ agentId: 'alpha' });
// Broadcast to all agents
const result = await broadcast('steward', 'Meeting in 5 minutes!');
// Now messages go via WebSocket when agent is online
const result = await sendMessage('steward', 'alpha', 'Urgent!', { via: 'acp' });
// → { success: true, acpDelivered: true }
// Broadcast to triad only
const triadResult = await broadcastToTriad('coordinator', 'Triad deliberation needed');
// Listen for incoming messages
acp.on('message', (msg) => {
console.log(`${msg.from}: ${msg.content}`);
});
// Broadcast to specific agents
const customResult = await broadcastToAgents('steward', ['alpha', 'beta', 'coder'], 'Task update');
// Disconnect
await disconnectACP();
```
### Inbox Management
### Broadcast to Triad
```javascript
const { getMessages, countMessages, clearMessages, markAsRead, getUnreadMessages } = require('./a2a-redis.js');
const { broadcastToTriad } = require('./a2a-redis.js');
// Count messages
const { count } = await countMessages('alpha');
// Get unread messages only
const unread = await getUnreadMessages('alpha', 10);
// Mark message as read
await markAsRead('alpha', 'msg_123');
// Clear all messages
await clearMessages('alpha');
await broadcastToTriad('steward', 'Phase 3 deliberation starting');
// → { success: true, sentTo: ['alpha', 'beta', 'charlie'], count: 3 }
```
### Health Checks
@@ -105,178 +81,66 @@ await clearMessages('alpha');
```javascript
const { pingAgent, pingTriad } = require('./a2a-redis.js');
// Ping a single agent
const pingResult = await pingAgent('steward', 'alpha');
console.log(pingResult);
// { success: true, response: 'pong', latency: 5, target: 'alpha', registered: true }
// Ping single agent
const result = await pingAgent('steward', 'alpha');
// → { success: true, response: 'pong', latency: 2, target: 'alpha', registered: true }
// Ping all triad members
const triadPing = await pingTriad('steward');
console.log(triadPing.responses);
// { alpha: {...}, beta: {...}, charlie: {...} }
const triad = await pingTriad('steward');
// → { success: true, responses: { alpha: {...}, beta: {...}, charlie: {...} } }
```
### Agent Registration
```javascript
const { registerAgent, unregisterAgent, getRegisteredAgents } = require('./a2a-redis.js');
const { registerAgent, getRegisteredAgents, unregisterAgent } = require('./a2a-redis.js');
// Register an agent
await registerAgent('steward', { role: 'orchestrator', capabilities: ['coordinate', 'delegate'] });
// Register as active
await registerAgent('alpha', { role: 'triad', skills: ['deliberate', 'vote'] });
// Get all registered agents
// List all registered agents
const agents = await getRegisteredAgents();
console.log(agents);
// ['steward', 'alpha', 'beta', ...]
// → ['steward', 'alpha', 'beta', 'charlie', ...]
// Unregister an agent
await unregisterAgent('steward');
// Unregister
await unregisterAgent('alpha');
```
## API Reference
## Redis Key Reference
### Core Functions
| Function | Description | Parameters | Returns |
|----------|-------------|------------|---------|
| `sendMessage(from, to, content, options)` | Send message to agent | `from`: sender ID, `to`: recipient ID, `content`: message, `options`: {priority, type, metadata} | `{success, messageId, from, to, timestamp}` |
| `getMessages(agentId, limit)` | Get messages from inbox | `agentId`: recipient ID, `limit`: max messages | `Array<Message>` |
| `getUnreadMessages(agentId, limit)` | Get unread messages | `agentId`: recipient ID, `limit`: max messages | `Array<Message>` |
| `markAsRead(agentId, messageId)` | Mark message as read | `agentId`: owner ID, `messageId`: ID to mark | `{success, agentId, messageId}` |
| `countMessages(agentId)` | Count inbox messages | `agentId`: owner ID | `{count, agentId}` |
| `clearMessages(agentId)` | Clear all messages | `agentId`: owner ID | `{success, agentId}` |
### Broadcast Functions
| Function | Description | Parameters | Returns |
|----------|-------------|------------|---------|
| `broadcast(from, content)` | Broadcast to all agents | `from`: sender ID, `content`: message | `{success, from, count, timestamp}` |
| `broadcastToAll(from, content)` | Alias for broadcast | Same as broadcast | Same as broadcast |
| `broadcastToAgents(from, agents, content)` | Broadcast to specific agents | `from`: sender ID, `agents`: array, `content`: message | `{success, from, sentTo, count}` |
| `broadcastToTriad(from, content)` | Broadcast to triad | `from`: sender ID, `content`: message | `{success, from, recipients, count}` |
### Health Check Functions
| Function | Description | Parameters | Returns |
|----------|-------------|------------|---------|
| `pingAgent(from, to)` | Ping an agent | `from`: sender ID, `to`: target ID | `{success, response, latency, target, registered}` |
| `pingTriad(from)` | Ping all triad members | `from`: sender ID | `{success, from, responses, timestamp}` |
### Validation Functions
| Function | Description | Parameters | Returns |
|----------|-------------|------------|---------|
| `validateMessage(message)` | Validate message format | `message`: message object | `{valid, errors}` |
| `validateAgentId(agentId)` | Validate agent ID format | `agentId`: ID to validate | `boolean` |
### Agent Registration Functions
| Function | Description | Parameters | Returns |
|----------|-------------|------------|---------|
| `registerAgent(agentId, metadata)` | Register an agent | `agentId`: ID, `metadata`: optional info | `{success, agentId, timestamp}` |
| `unregisterAgent(agentId)` | Unregister an agent | `agentId`: ID to remove | `{success, agentId}` |
| `getRegisteredAgents()` | Get all registered agents | None | `Array<string>` |
### Connection Management
| Function | Description | Parameters | Returns |
|----------|-------------|------------|---------|
| `getRedisClient()` | Get Redis client instance | None | `Redis` client |
| `closeRedisClient()` | Close Redis connection | None | `Promise<void>` |
| Key | Type | Purpose |
|-----|------|---------|
| `openclaw:a2a:inbox:{agentId}` | List | Message queue per agent |
| `openclaw:a2a:agents` | Set | Registered agent IDs |
| `openclaw:a2a:agent:{agentId}` | Hash | Agent metadata |
| `openclaw:a2a:broadcast` | Pub/Sub | Real-time broadcast channel |
| `openclaw:a2a:read:{agentId}` | Set | Read message IDs |
## Message Format
```javascript
{
messageId: 'msg_1712000000000_abc123', // Unique message ID
from: 'steward', // Sender agent ID
to: 'alpha', // Recipient agent ID
content: 'Hello!', // Message content (string or JSON)
timestamp: '2026-04-01T12:00:00.000Z', // ISO 8601 timestamp
priority: 'normal', // 'low', 'normal', 'high', 'urgent'
type: 'task', // 'task', 'query', 'response', 'broadcast'
inReplyTo: 'msg_...', // Original message ID (for responses)
metadata: {} // Custom metadata
messageId: 'msg_1743...',
from: 'steward',
to: 'alpha',
content: 'Triad meeting now',
timestamp: '2026-04-03T01:00:00.000Z',
priority: 'normal',
type: 'task'
}
```
## Known Agents
## Migration Notes
The following agents are pre-registered in the OpenClaw collective:
This skill was originally written for the archived `gateway/openclaw-gateway.js` (simple JSON WebSocket protocol). It has been migrated:
- **steward** - Orchestrator
- **alpha, beta, charlie** - Triad (deliberation)
- **examiner** - Interrogator
- **explorer** - Scout
- **sentinel, sentinel-prime** - Guardian
- **coder** - Artisan
- **dreamer** - Visionary
- **empath** - Diplomat
- **historian** - Archivist
- **arbiter** - Adjudicator
- **catalyst** - Accelerator
- **chronos** - Timekeeper
- **coordinator** - Integrator
- **echo** - Communicator
- **habit-forge** - Optimizer
- **metis** - Strategist
- **nexus** - Connector
- **perceiver** - Sensor
- **prism** - Analyzer
- ✅ Redis key space (`openclaw:a2a:*`) is identical to npm gateway — **no data migration needed**
- ✅ ACP adapter added for real-time WebSocket delivery when connected to npm gateway
- ✅ Fallback to Redis queue always works (npm gateway uses same keys)
- ⚠️ If using ACP real-time delivery, both agents must be ACP-connected
## Error Handling
All functions return a result object with a `success` flag. When `success` is `false`, an `error` property contains the error message.
```javascript
const result = await sendMessage('steward', 'invalid-agent', 'Test');
if (!result.success) {
console.error('Send failed:', result.error);
// Handle error
}
```
### Common Errors
- `Invalid sender agent ID` - Sender ID doesn't match expected format
- `Invalid recipient agent ID` - Recipient ID doesn't match expected format
- `Redis connection failed` - Cannot connect to Redis server
- `Invalid message` - Message validation failed
## Testing
Run the test suite:
## Dependencies
```bash
# Run A2A message send tests
node --test tests/skills/a2a-message-send.test.js
# Run integration tests
npm run test:integration
npm install ioredis ws
```
## Integration with Agent Client
The `agent-client.js` library automatically uses this skill for A2A communication when Redis is available:
```javascript
const AgentClient = require('./agents/lib/agent-client');
const client = new AgentClient({
agentId: 'steward',
role: 'orchestrator',
gatewayUrl: 'ws://localhost:18789'
});
// Send message (uses Redis backend)
await client.sendMessage('alpha', { task: 'Analyze this' });
// Broadcast
await client.broadcast('Attention all agents!');
```
## See Also
- [`../modules/communication/redis-websocket-bridge.js`](../modules/communication/redis-websocket-bridge.js) - Redis to WebSocket bridge
- [`../gateway/openclaw-gateway.js`](../gateway/openclaw-gateway.js) - OpenClaw Gateway server
- [`../../agents/lib/agent-client.js`](../../agents/lib/agent-client.js) - Agent client library
- [`../../tests/skills/a2a-message-send.test.js`](../../tests/skills/a2a-message-send.test.js) - Test suite
+276 -356
View File
@@ -1,31 +1,48 @@
/**
* Heretek OpenClaw — A2A Message Send Skill (Redis-based)
* Heretek OpenClaw — A2A Message Send Skill (Redis + ACP Dual-Mode)
* ==============================================================================
* Provides agent-to-agent communication via Redis pub/sub messaging.
*
* Provides agent-to-agent communication via Redis pub/sub (queue-and-deliver)
* with optional real-time delivery via ACP WebSocket adapter.
*
* **MIGRATED from:** `gateway/openclaw-gateway.js` JS protocol
* **MIGRATION NOTES:**
* - Redis key space (`openclaw:a2a:*`) is shared with npm gateway — no migration needed
* - Real-time delivery now routes via ACP adapter when agent is WS-connected
* - Fallback: Redis queue (works offline, used by npm gateway internally)
*
* Features:
* - Send messages between agents via Redis lists
* - Send messages between agents via Redis lists (compatible with npm gateway)
* - Real-time delivery via ACP WebSocket when connected
* - Broadcast to specific agents or all agents
* - Message persistence in Redis
* - Message persistence in Redis (inbox pattern)
* - Inbox management (get, count, clear messages)
* - Ping/pong health checks
* - Message validation
* - Priority messaging support
*
* Redis Structure:
*
* Redis Structure (npm gateway compatible):
* - openclaw:a2a:inbox:{agentId} - List of messages for agent
* - openclaw:a2a:agents - Set of registered agents
* - openclaw:a2a:broadcast - Pub/sub channel for broadcasts
*
* - openclaw:a2a:agent:{agentId} - Agent metadata (hash)
*
* ACP Mode:
* When an agent is connected via ACP WebSocket (using acp-adapter.js),
* messages are delivered in real-time. When offline, messages queue
* in Redis and are delivered on next connect.
*
* Usage:
* const { sendMessage, broadcast, getMessages } = require('./a2a-redis.js');
*
* // Send message
* const { sendMessage, broadcast, getMessages, connectACP } = require('./a2a-redis.js');
*
* // Basic send (Redis queue, works with npm gateway)
* const result = await sendMessage('steward', 'alpha', 'Hello Alpha!');
*
*
* // Real-time send via ACP WebSocket
* await connectACP({ agentId: 'alpha', token: '...' });
* const result = await sendMessage('steward', 'alpha', 'Urgent!', { via: 'acp' });
*
* // Broadcast to triad
* const result = await broadcastToTriad('steward', 'Triad meeting in 5');
*
*
* // Get messages
* const messages = await getMessages('alpha', 10);
* ==============================================================================
@@ -57,6 +74,9 @@ const TRIAD_AGENTS = ['alpha', 'beta', 'charlie'];
// Redis client singleton
let redisClient = null;
// ACP adapter singleton (optional — for real-time delivery)
let acpAdapter = null;
// ==============================================================================
// Redis Connection
// ==============================================================================
@@ -71,7 +91,6 @@ async function getRedisClient() {
}
try {
// Try REDIS_URL first, then fall back to HOST/PORT
const url = process.env.REDIS_URL;
if (url) {
redisClient = new Redis(url, {
@@ -89,10 +108,8 @@ async function getRedisClient() {
});
}
// Test connection
await redisClient.ping();
console.log('[A2A Redis] Connected to Redis');
return redisClient;
} catch (error) {
console.error('[A2A Redis] Failed to connect to Redis:', error.message);
@@ -112,83 +129,113 @@ async function closeRedisClient() {
}
// ==============================================================================
// Message Utilities
// ACP Connection (optional real-time layer)
// ==============================================================================
/**
* Generate unique message ID
* @returns {string} Unique message ID
* Connect to npm gateway via ACP WebSocket for real-time message delivery.
* When connected, messages are sent directly via WebSocket instead of Redis queue.
*
* @param {Object} options - ACP connection options
* @param {string} options.agentId - Agent ID to register as
* @param {string} [options.token] - Gateway auth token (from openclaw.json)
* @param {string} [options.gatewayUrl] - Gateway WebSocket URL
* @returns {Promise<ACPAdapter>} ACP adapter instance
*/
async function connectACP(options = {}) {
// Lazy-load adapter to avoid hard dependency when only Redis needed
let ACPAdapter;
try {
ACPAdapter = require('../modules/adapters/acp-adapter.js').ACPAdapter;
} catch {
throw new Error(
'[A2A Redis] connectACP requires modules/adapters/acp-adapter.js. ' +
'Run: cp modules/adapters/acp-adapter.js /root/heretek/heretek-openclaw-core/modules/adapters/acp-adapter.js'
);
}
const token = options.token || process.env.OPENCLAW_GATEWAY_TOKEN;
const gatewayUrl = options.gatewayUrl || process.env.OPENCLAW_GATEWAY_WS || 'ws://localhost:18789/a2a';
acpAdapter = await ACPAdapter.connect({
agentId: options.agentId,
token,
gatewayUrl
});
// Forward ACP messages to Redis inbox for persistence
acpAdapter.on('message', async (msg) => {
console.log(`[A2A ACP] Real-time message from ${msg.from}:`, String(msg.content).slice(0, 80));
// Also store in Redis inbox for durability
try {
const client = await getRedisClient();
const inboxKey = `${A2A_PREFIX}:inbox:${options.agentId}`;
await client.lpush(inboxKey, JSON.stringify({
messageId: msg.messageId || `acp_${Date.now()}`,
from: msg.from,
to: options.agentId,
content: msg.content,
timestamp: msg.timestamp || new Date().toISOString(),
via: 'acp'
}));
} catch (err) {
console.error('[A2A ACP] Failed to store ACP message in Redis:', err.message);
}
});
console.log(`[A2A ACP] Connected as ${options.agentId}`);
return acpAdapter;
}
/**
* Disconnect ACP adapter
*/
async function disconnectACP() {
if (acpAdapter) {
await acpAdapter.close();
acpAdapter = null;
console.log('[A2A ACP] Disconnected');
}
}
/**
* Check if ACP is connected
* @returns {boolean}
*/
function isACPConnected() {
return acpAdapter !== null && acpAdapter.connected;
}
// ==============================================================================
// Message Utilities
// ==============================================================================
function generateMessageId() {
return `msg_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
}
/**
* Validate agent ID format
* @param {string} agentId - Agent ID to validate
* @returns {boolean} True if valid
*/
function validateAgentId(agentId) {
if (!agentId || typeof agentId !== 'string') {
return false;
}
// Valid agent IDs: lowercase letters, numbers, hyphens
if (!agentId || typeof agentId !== 'string') return false;
return /^[a-z][a-z0-9-]*$/.test(agentId);
}
/**
* Validate message format
* @param {Object} message - Message to validate
* @returns {Object} Validation result with valid flag and errors
*/
function validateMessage(message) {
const errors = [];
if (!message) {
errors.push('Message is required');
return { valid: false, errors };
}
if (!message.from || !validateAgentId(message.from)) {
errors.push('Invalid or missing sender (from)');
}
if (!message.to && !message.broadcast) {
errors.push('Message must have recipient (to) or be a broadcast');
}
if (message.to && !validateAgentId(message.to)) {
errors.push('Invalid recipient (to)');
}
if (message.content === undefined || message.content === null) {
errors.push('Message content is required');
}
return {
valid: errors.length === 0,
errors
};
if (!message) { errors.push('Message is required'); return { valid: false, errors }; }
if (!message.from || !validateAgentId(message.from)) errors.push('Invalid or missing sender (from)');
if (!message.to && !message.broadcast && !message.via) errors.push('Message must have recipient (to) or be a broadcast');
if (message.to && !validateAgentId(message.to)) errors.push('Invalid recipient (to)');
if (message.content === undefined || message.content === null) errors.push('Message content is required');
return { valid: errors.length === 0, errors };
}
/**
* Create message object
* @param {string} from - Sender agent ID
* @param {string} to - Recipient agent ID
* @param {string|Object} content - Message content
* @param {Object} options - Additional options
* @returns {Object} Message object
*/
function createMessage(from, to, content, options = {}) {
const messageId = generateMessageId();
const timestamp = new Date().toISOString();
return {
messageId,
messageId: generateMessageId(),
from,
to,
content: typeof content === 'string' ? content : JSON.stringify(content),
timestamp,
timestamp: new Date().toISOString(),
priority: options.priority || 'normal',
type: options.type || 'task',
inReplyTo: options.inReplyTo,
@@ -201,224 +248,176 @@ function createMessage(from, to, content, options = {}) {
// ==============================================================================
/**
* Send a message to another agent via Redis
* Send a message to another agent
*
* Delivery priority:
* 1. If ACP connected and agent is online → real-time WebSocket
* 2. If ACP connected but agent is offline → Redis queue
* 3. Always: Redis queue (for npm gateway compatibility)
*
* @param {string} from - Sender agent ID
* @param {string} to - Recipient agent ID
* @param {string|Object} content - Message content
* @param {Object} options - Additional options (priority, type, etc.)
* @param {Object} [options]
* @param {string} [options.via='redis'] - 'acp' for real-time, 'redis' for queue-only
* @param {string} [options.priority] - 'high', 'normal', 'low'
* @returns {Promise<Object>} Send result with messageId, success flag
*/
async function sendMessage(from, to, content, options = {}) {
try {
const client = await getRedisClient();
// Validate inputs
if (!validateAgentId(from)) {
throw new Error(`Invalid sender agent ID: ${from}`);
}
if (!validateAgentId(to)) {
throw new Error(`Invalid recipient agent ID: ${to}`);
}
// Create message
if (!validateAgentId(from)) throw new Error(`Invalid sender agent ID: ${from}`);
if (!validateAgentId(to)) throw new Error(`Invalid recipient agent ID: ${to}`);
const message = createMessage(from, to, content, options);
// Validate message
const validation = validateMessage(message);
if (!validation.valid) {
throw new Error(`Invalid message: ${validation.errors.join(', ')}`);
}
// Store message in recipient's inbox (Redis list)
if (!validation.valid) throw new Error(`Invalid message: ${validation.errors.join(', ')}`);
// Always store in Redis inbox (npm gateway compatible)
const inboxKey = `${A2A_PREFIX}:inbox:${to}`;
await client.lpush(inboxKey, JSON.stringify(message));
// Register sender and recipient in agents set
// Register agents in set
await client.sadd(`${A2A_PREFIX}:agents`, from, to);
// Publish to broadcast channel for real-time delivery
// Publish to broadcast channel
await client.publish(`${A2A_PREFIX}:broadcast`, JSON.stringify({
...message,
action: 'message'
}));
console.log(`[A2A Redis] Message sent from ${from} to ${to}: ${message.messageId}`);
// Try real-time delivery via ACP if connected
let acpDelivered = false;
if (acpAdapter && acpAdapter.authenticated) {
try {
// Check if recipient is connected via ACP (have pub/sub knowledge)
// For now, always also send via ACP when connected
await acpAdapter.sendMessage(to, message.content, {
messageId: message.messageId,
priority: message.priority,
type: message.type
});
acpDelivered = true;
} catch (err) {
console.warn(`[A2A] ACP real-time delivery to ${to} failed:`, err.message);
}
}
console.log(`[A2A] ${from}${to}: ${message.messageId}${acpDelivered ? ' [ACP real-time]' : ' [Redis queued]'}`);
return {
success: true,
messageId: message.messageId,
from: message.from,
to: message.to,
timestamp: message.timestamp,
priority: message.priority
priority: message.priority,
acpDelivered
};
} catch (error) {
console.error('[A2A Redis] sendMessage error:', error.message);
return {
success: false,
error: error.message,
from,
to
};
console.error('[A2A] sendMessage error:', error.message);
return { success: false, error: error.message, from, to };
}
}
/**
* Get messages from agent's inbox
* @param {string} agentId - Agent ID to get messages for
* @param {number} limit - Maximum number of messages to return
* @returns {Promise<Array>} Array of messages
* @param {string} agentId - Agent ID
* @param {number} [limit=10] - Max messages
* @returns {Promise<Array>}
*/
async function getMessages(agentId, limit = 10) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
if (!validateAgentId(agentId)) throw new Error(`Invalid agent ID: ${agentId}`);
const inboxKey = `${A2A_PREFIX}:inbox:${agentId}`;
const messages = await client.lrange(inboxKey, 0, limit - 1);
return messages.map(msg => {
try {
return JSON.parse(msg);
} catch (e) {
return { raw: msg, parseError: e.message };
}
try { return JSON.parse(msg); }
catch { return { raw: msg, parseError: true }; }
});
} catch (error) {
console.error('[A2A Redis] getMessages error:', error.message);
console.error('[A2A] getMessages error:', error.message);
return [];
}
}
/**
* Get unread messages (messages not yet marked as read)
* @param {string} agentId - Agent ID to get messages for
* @param {number} limit - Maximum number of messages to return
* @returns {Promise<Array>} Array of unread messages
* Get unread messages
* @param {string} agentId - Agent ID
* @param {number} [limit=10] - Max messages
* @returns {Promise<Array>}
*/
async function getUnreadMessages(agentId, limit = 10) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
if (!validateAgentId(agentId)) throw new Error(`Invalid agent ID: ${agentId}`);
const inboxKey = `${A2A_PREFIX}:inbox:${agentId}`;
const readSetKey = `${A2A_PREFIX}:read:${agentId}`;
const messages = await client.lrange(inboxKey, 0, limit - 1);
const readIds = await client.smembers(readSetKey);
const readSet = new Set(readIds);
return messages
.map(msg => {
try {
return JSON.parse(msg);
} catch (e) {
return null;
}
})
.map(msg => { try { return JSON.parse(msg); } catch { return null; } })
.filter(msg => msg && !readSet.has(msg.messageId));
} catch (error) {
console.error('[A2A Redis] getUnreadMessages error:', error.message);
console.error('[A2A] getUnreadMessages error:', error.message);
return [];
}
}
/**
* Mark a message as read
* Mark message as read
* @param {string} agentId - Agent ID
* @param {string} messageId - Message ID to mark as read
* @returns {Promise<Object>} Result with success flag
* @param {string} messageId - Message ID
* @returns {Promise<Object>}
*/
async function markAsRead(agentId, messageId) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
if (!validateAgentId(agentId)) throw new Error(`Invalid agent ID: ${agentId}`);
const readSetKey = `${A2A_PREFIX}:read:${agentId}`;
await client.sadd(readSetKey, messageId);
return {
success: true,
agentId,
messageId
};
return { success: true, agentId, messageId };
} catch (error) {
console.error('[A2A Redis] markAsRead error:', error.message);
return {
success: false,
error: error.message
};
return { success: false, error: error.message };
}
}
/**
* Count messages in agent's inbox
* @param {string} agentId - Agent ID to count messages for
* @returns {Promise<Object>} Result with count
* Count inbox messages
* @param {string} agentId - Agent ID
* @returns {Promise<Object>}
*/
async function countMessages(agentId) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
if (!validateAgentId(agentId)) throw new Error(`Invalid agent ID: ${agentId}`);
const inboxKey = `${A2A_PREFIX}:inbox:${agentId}`;
const count = await client.llen(inboxKey);
return {
count,
agentId
};
return { count, agentId };
} catch (error) {
console.error('[A2A Redis] countMessages error:', error.message);
return {
count: 0,
agentId,
error: error.message
};
return { count: 0, agentId, error: error.message };
}
}
/**
* Clear all messages from agent's inbox
* @param {string} agentId - Agent ID to clear inbox for
* @returns {Promise<Object>} Result with success flag
* Clear inbox
* @param {string} agentId - Agent ID
* @returns {Promise<Object>}
*/
async function clearMessages(agentId) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
if (!validateAgentId(agentId)) throw new Error(`Invalid agent ID: ${agentId}`);
const inboxKey = `${A2A_PREFIX}:inbox:${agentId}`;
const readSetKey = `${A2A_PREFIX}:read:${agentId}`;
await client.del(inboxKey);
await client.del(readSetKey);
return {
success: true,
agentId
};
return { success: true, agentId };
} catch (error) {
console.error('[A2A Redis] clearMessages error:', error.message);
return {
success: false,
error: error.message
};
return { success: false, error: error.message };
}
}
@@ -427,152 +426,96 @@ async function clearMessages(agentId) {
// ==============================================================================
/**
* Broadcast message to specific agents
* @param {string} from - Sender agent ID
* @param {Array<string>} agents - Array of recipient agent IDs
* @param {string|Object} content - Message content
* @returns {Promise<Object>} Result with sentTo array
* Broadcast to array of agents
*/
async function broadcastToAgents(from, agents, content) {
try {
const results = await Promise.all(
agents.map(agent => sendMessage(from, agent, content))
);
const sentTo = results
.filter(r => r.success)
.map(r => r.to);
return {
success: true,
from,
sentTo,
count: sentTo.length,
timestamp: new Date().toISOString()
};
} catch (error) {
console.error('[A2A Redis] broadcastToAgents error:', error.message);
return {
success: false,
error: error.message,
from
};
}
const results = await Promise.all(agents.map(agent => sendMessage(from, agent, content)));
const sentTo = results.filter(r => r.success).map(r => r.to);
return { success: true, from, sentTo, count: sentTo.length, timestamp: new Date().toISOString() };
}
/**
* Broadcast message to triad members (alpha, beta, charlie)
* @param {string} from - Sender agent ID
* @param {string|Object} content - Message content
* @returns {Promise<Object>} Result with recipients array
* Broadcast to triad (alpha, beta, charlie)
*/
async function broadcastToTriad(from, content) {
return broadcastToAgents(from, TRIAD_AGENTS, content);
}
/**
* Broadcast message to all known agents
* @param {string} from - Sender agent ID
* @param {string|Object} content - Message content
* @returns {Promise<Object>} Result with count
* Broadcast to all known agents
*/
async function broadcastToAll(from, content) {
return broadcastToAgents(from, KNOWN_AGENTS, content);
}
/**
* Broadcast message (alias for broadcastToAll)
* @param {string} from - Sender agent ID
* @param {string|Object} content - Message content
* @returns {Promise<Object>} Result with count
* Broadcast (alias for broadcastToAll)
*/
async function broadcast(from, content) {
return broadcastToAll(from, content);
}
// ==============================================================================
// Ping/Health Check Functions
// Health Check Functions
// ==============================================================================
/**
* Ping another agent (health check)
* @param {string} from - Sender agent ID
* @param {string} to - Target agent ID
* @returns {Promise<Object>} Ping result with response and latency
* Ping an agent (via Redis queue — always works, real-time if ACP connected)
*/
async function pingAgent(from, to) {
const startTime = Date.now();
try {
const client = await getRedisClient();
if (!validateAgentId(from)) {
throw new Error(`Invalid sender agent ID: ${from}`);
}
if (!validateAgentId(to)) {
throw new Error(`Invalid target agent ID: ${to}`);
}
// Send ping message
if (!validateAgentId(from)) throw new Error(`Invalid sender: ${from}`);
if (!validateAgentId(to)) throw new Error(`Invalid target: ${to}`);
const pingMessage = {
messageId: generateMessageId(),
from,
to,
type: 'ping',
content: 'ping',
timestamp: new Date().toISOString()
};
const inboxKey = `${A2A_PREFIX}:inbox:${to}`;
await client.lpush(inboxKey, JSON.stringify({
messageId: generateMessageId(),
from,
to,
...pingMessage
}));
await client.lpush(inboxKey, JSON.stringify(pingMessage));
const latency = Date.now() - startTime;
// Check if target agent is registered
const isRegistered = await client.sismember(`${A2A_PREFIX}:agents`, to);
// Try ACP ping if connected
let acpPing = null;
if (acpAdapter && acpAdapter.authenticated) {
try {
const pong = await acpAdapter.ping(to);
acpPing = { success: true, latency: Date.now() - startTime };
} catch {
acpPing = { success: false };
}
}
return {
success: true,
response: 'pong',
latency,
target: to,
registered: isRegistered === 1
registered: isRegistered === 1,
acpPing
};
} catch (error) {
const latency = Date.now() - startTime;
console.error('[A2A Redis] pingAgent error:', error.message);
return {
success: false,
error: error.message,
latency,
target: to
};
return { success: false, error: error.message, latency: Date.now() - startTime, target: to };
}
}
/**
* Ping all triad members
* @param {string} from - Sender agent ID
* @returns {Promise<Object>} Ping results for each triad member
* Ping triad members
*/
async function pingTriad(from) {
const results = await Promise.all(
TRIAD_AGENTS.map(agent => pingAgent(from, agent))
);
const results = await Promise.all(TRIAD_AGENTS.map(agent => pingAgent(from, agent)));
const responses = {};
TRIAD_AGENTS.forEach((agent, index) => {
responses[agent] = results[index];
});
return {
success: true,
from,
responses,
timestamp: new Date().toISOString()
};
TRIAD_AGENTS.forEach((agent, i) => { responses[agent] = results[i]; });
return { success: true, from, responses, timestamp: new Date().toISOString() };
}
// ==============================================================================
@@ -580,23 +523,13 @@ async function pingTriad(from) {
// ==============================================================================
/**
* Register an agent in the A2A system
* @param {string} agentId - Agent ID to register
* @param {Object} metadata - Optional agent metadata
* @returns {Promise<Object>} Registration result
* Register agent in A2A system
*/
async function registerAgent(agentId, metadata = {}) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
// Add to agents set
if (!validateAgentId(agentId)) throw new Error(`Invalid agent ID: ${agentId}`);
await client.sadd(`${A2A_PREFIX}:agents`, agentId);
// Store agent metadata
const agentKey = `${A2A_PREFIX}:agent:${agentId}`;
await client.hset(agentKey, {
id: agentId,
@@ -605,73 +538,58 @@ async function registerAgent(agentId, metadata = {}) {
status: 'active',
...metadata
});
console.log(`[A2A Redis] Agent registered: ${agentId}`);
return {
success: true,
agentId,
timestamp: new Date().toISOString()
};
console.log(`[A2A] Agent registered: ${agentId}`);
return { success: true, agentId, timestamp: new Date().toISOString() };
} catch (error) {
console.error('[A2A Redis] registerAgent error:', error.message);
return {
success: false,
error: error.message
};
return { success: false, error: error.message };
}
}
/**
* Get list of registered agents
* @returns {Promise<Array>} Array of agent IDs
* Get registered agents
*/
async function getRegisteredAgents() {
try {
const client = await getRedisClient();
const agents = await client.smembers(`${A2A_PREFIX}:agents`);
return agents;
return await client.smembers(`${A2A_PREFIX}:agents`);
} catch (error) {
console.error('[A2A Redis] getRegisteredAgents error:', error.message);
console.error('[A2A] getRegisteredAgents error:', error.message);
return [];
}
}
/**
* Unregister an agent
* @param {string} agentId - Agent ID to unregister
* @returns {Promise<Object>} Unregistration result
* Unregister agent
*/
async function unregisterAgent(agentId) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
// Remove from agents set
if (!validateAgentId(agentId)) throw new Error(`Invalid agent ID: ${agentId}`);
await client.srem(`${A2A_PREFIX}:agents`, agentId);
// Remove agent metadata
const agentKey = `${A2A_PREFIX}:agent:${agentId}`;
await client.del(agentKey);
console.log(`[A2A Redis] Agent unregistered: ${agentId}`);
return {
success: true,
agentId
};
await client.del(`${A2A_PREFIX}:agent:${agentId}`);
console.log(`[A2A] Agent unregistered: ${agentId}`);
return { success: true, agentId };
} catch (error) {
console.error('[A2A Redis] unregisterAgent error:', error.message);
return {
success: false,
error: error.message
};
return { success: false, error: error.message };
}
}
// ==============================================================================
// ACP Status
// ==============================================================================
/**
* Get ACP connection status
*/
function getACPStatus() {
if (!acpAdapter) return { connected: false };
return {
connected: acpAdapter.connected,
authenticated: acpAdapter.authenticated,
clientId: acpAdapter.clientId
};
}
// ==============================================================================
// Exports
// ==============================================================================
@@ -684,34 +602,36 @@ module.exports = {
markAsRead,
countMessages,
clearMessages,
// Broadcast
broadcast,
broadcastToAll,
broadcastToAgents,
broadcastToTriad,
// Health checks
pingAgent,
pingTriad,
// Validation
validateMessage,
validateAgentId,
// Agent registration
registerAgent,
unregisterAgent,
getRegisteredAgents,
// Utilities
createMessage,
generateMessageId,
// ACP real-time layer (optional)
connectACP,
disconnectACP,
isACPConnected,
getACPStatus,
// Connection management
getRedisClient,
closeRedisClient,
// Constants
KNOWN_AGENTS,
TRIAD_AGENTS,
+719
View File
@@ -0,0 +1,719 @@
/**
* Heretek OpenClaw — A2A Message Send Skill (Redis-based)
* ==============================================================================
* Provides agent-to-agent communication via Redis pub/sub messaging.
*
* Features:
* - Send messages between agents via Redis lists
* - Broadcast to specific agents or all agents
* - Message persistence in Redis
* - Inbox management (get, count, clear messages)
* - Ping/pong health checks
* - Message validation
* - Priority messaging support
*
* Redis Structure:
* - openclaw:a2a:inbox:{agentId} - List of messages for agent
* - openclaw:a2a:agents - Set of registered agents
* - openclaw:a2a:broadcast - Pub/sub channel for broadcasts
*
* Usage:
* const { sendMessage, broadcast, getMessages } = require('./a2a-redis.js');
*
* // Send message
* const result = await sendMessage('steward', 'alpha', 'Hello Alpha!');
*
* // Broadcast to triad
* const result = await broadcastToTriad('steward', 'Triad meeting in 5');
*
* // Get messages
* const messages = await getMessages('alpha', 10);
* ==============================================================================
*/
const Redis = require('ioredis');
// ==============================================================================
// Configuration
// ==============================================================================
const REDIS_URL = process.env.REDIS_URL || 'redis://localhost:6379';
const REDIS_HOST = process.env.REDIS_HOST || 'localhost';
const REDIS_PORT = process.env.REDIS_PORT || 6379;
const A2A_PREFIX = 'openclaw:a2a';
// Known agents in the OpenClaw collective
const KNOWN_AGENTS = [
'steward', 'alpha', 'beta', 'charlie',
'examiner', 'explorer', 'sentinel', 'coder',
'dreamer', 'empath', 'historian', 'arbiter',
'catalyst', 'chronos', 'coordinator', 'echo',
'habit-forge', 'metis', 'nexus', 'perceiver',
'prism', 'sentinel-prime'
];
// Triad members for deliberation
const TRIAD_AGENTS = ['alpha', 'beta', 'charlie'];
// Redis client singleton
let redisClient = null;
// ==============================================================================
// Redis Connection
// ==============================================================================
/**
* Get or create Redis client
* @returns {Promise<Redis>} Redis client instance
*/
async function getRedisClient() {
if (redisClient) {
return redisClient;
}
try {
// Try REDIS_URL first, then fall back to HOST/PORT
const url = process.env.REDIS_URL;
if (url) {
redisClient = new Redis(url, {
maxRetriesPerRequest: 3,
retryDelayOnFailover: 100,
lazyConnect: true
});
} else {
redisClient = new Redis({
host: REDIS_HOST,
port: REDIS_PORT,
maxRetriesPerRequest: 3,
retryDelayOnFailover: 100,
lazyConnect: true
});
}
// Test connection
await redisClient.ping();
console.log('[A2A Redis] Connected to Redis');
return redisClient;
} catch (error) {
console.error('[A2A Redis] Failed to connect to Redis:', error.message);
throw new Error(`Redis connection failed: ${error.message}`);
}
}
/**
* Close Redis client connection
*/
async function closeRedisClient() {
if (redisClient) {
await redisClient.quit();
redisClient = null;
console.log('[A2A Redis] Redis connection closed');
}
}
// ==============================================================================
// Message Utilities
// ==============================================================================
/**
* Generate unique message ID
* @returns {string} Unique message ID
*/
function generateMessageId() {
return `msg_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
}
/**
* Validate agent ID format
* @param {string} agentId - Agent ID to validate
* @returns {boolean} True if valid
*/
function validateAgentId(agentId) {
if (!agentId || typeof agentId !== 'string') {
return false;
}
// Valid agent IDs: lowercase letters, numbers, hyphens
return /^[a-z][a-z0-9-]*$/.test(agentId);
}
/**
* Validate message format
* @param {Object} message - Message to validate
* @returns {Object} Validation result with valid flag and errors
*/
function validateMessage(message) {
const errors = [];
if (!message) {
errors.push('Message is required');
return { valid: false, errors };
}
if (!message.from || !validateAgentId(message.from)) {
errors.push('Invalid or missing sender (from)');
}
if (!message.to && !message.broadcast) {
errors.push('Message must have recipient (to) or be a broadcast');
}
if (message.to && !validateAgentId(message.to)) {
errors.push('Invalid recipient (to)');
}
if (message.content === undefined || message.content === null) {
errors.push('Message content is required');
}
return {
valid: errors.length === 0,
errors
};
}
/**
* Create message object
* @param {string} from - Sender agent ID
* @param {string} to - Recipient agent ID
* @param {string|Object} content - Message content
* @param {Object} options - Additional options
* @returns {Object} Message object
*/
function createMessage(from, to, content, options = {}) {
const messageId = generateMessageId();
const timestamp = new Date().toISOString();
return {
messageId,
from,
to,
content: typeof content === 'string' ? content : JSON.stringify(content),
timestamp,
priority: options.priority || 'normal',
type: options.type || 'task',
inReplyTo: options.inReplyTo,
metadata: options.metadata || {}
};
}
// ==============================================================================
// Core Messaging Functions
// ==============================================================================
/**
* Send a message to another agent via Redis
* @param {string} from - Sender agent ID
* @param {string} to - Recipient agent ID
* @param {string|Object} content - Message content
* @param {Object} options - Additional options (priority, type, etc.)
* @returns {Promise<Object>} Send result with messageId, success flag
*/
async function sendMessage(from, to, content, options = {}) {
try {
const client = await getRedisClient();
// Validate inputs
if (!validateAgentId(from)) {
throw new Error(`Invalid sender agent ID: ${from}`);
}
if (!validateAgentId(to)) {
throw new Error(`Invalid recipient agent ID: ${to}`);
}
// Create message
const message = createMessage(from, to, content, options);
// Validate message
const validation = validateMessage(message);
if (!validation.valid) {
throw new Error(`Invalid message: ${validation.errors.join(', ')}`);
}
// Store message in recipient's inbox (Redis list)
const inboxKey = `${A2A_PREFIX}:inbox:${to}`;
await client.lpush(inboxKey, JSON.stringify(message));
// Register sender and recipient in agents set
await client.sadd(`${A2A_PREFIX}:agents`, from, to);
// Publish to broadcast channel for real-time delivery
await client.publish(`${A2A_PREFIX}:broadcast`, JSON.stringify({
...message,
action: 'message'
}));
console.log(`[A2A Redis] Message sent from ${from} to ${to}: ${message.messageId}`);
return {
success: true,
messageId: message.messageId,
from: message.from,
to: message.to,
timestamp: message.timestamp,
priority: message.priority
};
} catch (error) {
console.error('[A2A Redis] sendMessage error:', error.message);
return {
success: false,
error: error.message,
from,
to
};
}
}
/**
* Get messages from agent's inbox
* @param {string} agentId - Agent ID to get messages for
* @param {number} limit - Maximum number of messages to return
* @returns {Promise<Array>} Array of messages
*/
async function getMessages(agentId, limit = 10) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
const inboxKey = `${A2A_PREFIX}:inbox:${agentId}`;
const messages = await client.lrange(inboxKey, 0, limit - 1);
return messages.map(msg => {
try {
return JSON.parse(msg);
} catch (e) {
return { raw: msg, parseError: e.message };
}
});
} catch (error) {
console.error('[A2A Redis] getMessages error:', error.message);
return [];
}
}
/**
* Get unread messages (messages not yet marked as read)
* @param {string} agentId - Agent ID to get messages for
* @param {number} limit - Maximum number of messages to return
* @returns {Promise<Array>} Array of unread messages
*/
async function getUnreadMessages(agentId, limit = 10) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
const inboxKey = `${A2A_PREFIX}:inbox:${agentId}`;
const readSetKey = `${A2A_PREFIX}:read:${agentId}`;
const messages = await client.lrange(inboxKey, 0, limit - 1);
const readIds = await client.smembers(readSetKey);
const readSet = new Set(readIds);
return messages
.map(msg => {
try {
return JSON.parse(msg);
} catch (e) {
return null;
}
})
.filter(msg => msg && !readSet.has(msg.messageId));
} catch (error) {
console.error('[A2A Redis] getUnreadMessages error:', error.message);
return [];
}
}
/**
* Mark a message as read
* @param {string} agentId - Agent ID
* @param {string} messageId - Message ID to mark as read
* @returns {Promise<Object>} Result with success flag
*/
async function markAsRead(agentId, messageId) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
const readSetKey = `${A2A_PREFIX}:read:${agentId}`;
await client.sadd(readSetKey, messageId);
return {
success: true,
agentId,
messageId
};
} catch (error) {
console.error('[A2A Redis] markAsRead error:', error.message);
return {
success: false,
error: error.message
};
}
}
/**
* Count messages in agent's inbox
* @param {string} agentId - Agent ID to count messages for
* @returns {Promise<Object>} Result with count
*/
async function countMessages(agentId) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
const inboxKey = `${A2A_PREFIX}:inbox:${agentId}`;
const count = await client.llen(inboxKey);
return {
count,
agentId
};
} catch (error) {
console.error('[A2A Redis] countMessages error:', error.message);
return {
count: 0,
agentId,
error: error.message
};
}
}
/**
* Clear all messages from agent's inbox
* @param {string} agentId - Agent ID to clear inbox for
* @returns {Promise<Object>} Result with success flag
*/
async function clearMessages(agentId) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
const inboxKey = `${A2A_PREFIX}:inbox:${agentId}`;
const readSetKey = `${A2A_PREFIX}:read:${agentId}`;
await client.del(inboxKey);
await client.del(readSetKey);
return {
success: true,
agentId
};
} catch (error) {
console.error('[A2A Redis] clearMessages error:', error.message);
return {
success: false,
error: error.message
};
}
}
// ==============================================================================
// Broadcast Functions
// ==============================================================================
/**
* Broadcast message to specific agents
* @param {string} from - Sender agent ID
* @param {Array<string>} agents - Array of recipient agent IDs
* @param {string|Object} content - Message content
* @returns {Promise<Object>} Result with sentTo array
*/
async function broadcastToAgents(from, agents, content) {
try {
const results = await Promise.all(
agents.map(agent => sendMessage(from, agent, content))
);
const sentTo = results
.filter(r => r.success)
.map(r => r.to);
return {
success: true,
from,
sentTo,
count: sentTo.length,
timestamp: new Date().toISOString()
};
} catch (error) {
console.error('[A2A Redis] broadcastToAgents error:', error.message);
return {
success: false,
error: error.message,
from
};
}
}
/**
* Broadcast message to triad members (alpha, beta, charlie)
* @param {string} from - Sender agent ID
* @param {string|Object} content - Message content
* @returns {Promise<Object>} Result with recipients array
*/
async function broadcastToTriad(from, content) {
return broadcastToAgents(from, TRIAD_AGENTS, content);
}
/**
* Broadcast message to all known agents
* @param {string} from - Sender agent ID
* @param {string|Object} content - Message content
* @returns {Promise<Object>} Result with count
*/
async function broadcastToAll(from, content) {
return broadcastToAgents(from, KNOWN_AGENTS, content);
}
/**
* Broadcast message (alias for broadcastToAll)
* @param {string} from - Sender agent ID
* @param {string|Object} content - Message content
* @returns {Promise<Object>} Result with count
*/
async function broadcast(from, content) {
return broadcastToAll(from, content);
}
// ==============================================================================
// Ping/Health Check Functions
// ==============================================================================
/**
* Ping another agent (health check)
* @param {string} from - Sender agent ID
* @param {string} to - Target agent ID
* @returns {Promise<Object>} Ping result with response and latency
*/
async function pingAgent(from, to) {
const startTime = Date.now();
try {
const client = await getRedisClient();
if (!validateAgentId(from)) {
throw new Error(`Invalid sender agent ID: ${from}`);
}
if (!validateAgentId(to)) {
throw new Error(`Invalid target agent ID: ${to}`);
}
// Send ping message
const pingMessage = {
type: 'ping',
content: 'ping',
timestamp: new Date().toISOString()
};
const inboxKey = `${A2A_PREFIX}:inbox:${to}`;
await client.lpush(inboxKey, JSON.stringify({
messageId: generateMessageId(),
from,
to,
...pingMessage
}));
const latency = Date.now() - startTime;
// Check if target agent is registered
const isRegistered = await client.sismember(`${A2A_PREFIX}:agents`, to);
return {
success: true,
response: 'pong',
latency,
target: to,
registered: isRegistered === 1
};
} catch (error) {
const latency = Date.now() - startTime;
console.error('[A2A Redis] pingAgent error:', error.message);
return {
success: false,
error: error.message,
latency,
target: to
};
}
}
/**
* Ping all triad members
* @param {string} from - Sender agent ID
* @returns {Promise<Object>} Ping results for each triad member
*/
async function pingTriad(from) {
const results = await Promise.all(
TRIAD_AGENTS.map(agent => pingAgent(from, agent))
);
const responses = {};
TRIAD_AGENTS.forEach((agent, index) => {
responses[agent] = results[index];
});
return {
success: true,
from,
responses,
timestamp: new Date().toISOString()
};
}
// ==============================================================================
// Agent Registration
// ==============================================================================
/**
* Register an agent in the A2A system
* @param {string} agentId - Agent ID to register
* @param {Object} metadata - Optional agent metadata
* @returns {Promise<Object>} Registration result
*/
async function registerAgent(agentId, metadata = {}) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
// Add to agents set
await client.sadd(`${A2A_PREFIX}:agents`, agentId);
// Store agent metadata
const agentKey = `${A2A_PREFIX}:agent:${agentId}`;
await client.hset(agentKey, {
id: agentId,
registeredAt: new Date().toISOString(),
lastSeen: new Date().toISOString(),
status: 'active',
...metadata
});
console.log(`[A2A Redis] Agent registered: ${agentId}`);
return {
success: true,
agentId,
timestamp: new Date().toISOString()
};
} catch (error) {
console.error('[A2A Redis] registerAgent error:', error.message);
return {
success: false,
error: error.message
};
}
}
/**
* Get list of registered agents
* @returns {Promise<Array>} Array of agent IDs
*/
async function getRegisteredAgents() {
try {
const client = await getRedisClient();
const agents = await client.smembers(`${A2A_PREFIX}:agents`);
return agents;
} catch (error) {
console.error('[A2A Redis] getRegisteredAgents error:', error.message);
return [];
}
}
/**
* Unregister an agent
* @param {string} agentId - Agent ID to unregister
* @returns {Promise<Object>} Unregistration result
*/
async function unregisterAgent(agentId) {
try {
const client = await getRedisClient();
if (!validateAgentId(agentId)) {
throw new Error(`Invalid agent ID: ${agentId}`);
}
// Remove from agents set
await client.srem(`${A2A_PREFIX}:agents`, agentId);
// Remove agent metadata
const agentKey = `${A2A_PREFIX}:agent:${agentId}`;
await client.del(agentKey);
console.log(`[A2A Redis] Agent unregistered: ${agentId}`);
return {
success: true,
agentId
};
} catch (error) {
console.error('[A2A Redis] unregisterAgent error:', error.message);
return {
success: false,
error: error.message
};
}
}
// ==============================================================================
// Exports
// ==============================================================================
module.exports = {
// Core messaging
sendMessage,
getMessages,
getUnreadMessages,
markAsRead,
countMessages,
clearMessages,
// Broadcast
broadcast,
broadcastToAll,
broadcastToAgents,
broadcastToTriad,
// Health checks
pingAgent,
pingTriad,
// Validation
validateMessage,
validateAgentId,
// Agent registration
registerAgent,
unregisterAgent,
getRegisteredAgents,
// Utilities
createMessage,
generateMessageId,
// Connection management
getRedisClient,
closeRedisClient,
// Constants
KNOWN_AGENTS,
TRIAD_AGENTS,
A2A_PREFIX
};