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Artur Do Lago a02bfd2c10 fix(config): consolidate providers and agent definitions

- Disable google-vertex and google-vertex-anthropic (redundant with Antigravity)
- Remove non-working antigravity provider config
- Use built-in antigravity-* models from provider.ts
- Add zee, stanley, johny agent definitions
- Update compaction to use google/antigravity-gemini-3-flash
- Update johny.md to use google/antigravity-claude-opus-4-5-thinking
- Remove top_p from agent files (handled by ProviderTransform)
- Add docs/PROVIDERS.md with provider setup documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-20 12:30:39 +01:00

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Provider Configuration

This document describes the working provider setup for agent-core.

Config Locations

Type	Location
Project config	`~/.local/src/agent-core/.agent-core/agent-core.jsonc`
Global config (symlink)	`~/.config/agent-core/agent-core.jsonc`
Agent definitions	`~/.local/src/agent-core/.agent-core/agent/`
Global agents (symlink)	`~/.config/agent-core/agent/`

The global config is symlinked to project config so changes in one location reflect in both.

Providers

Google (Antigravity)

Free-tier models via the opencode-antigravity-auth plugin.

Provider ID: google

Available Models:

Model ID	Display Name	Type
`google/antigravity-claude-opus-4-5-thinking`	Claude Opus 4.5 Thinking	Reasoning
`google/antigravity-claude-sonnet-4-5`	Claude Sonnet 4.5	Standard
`google/antigravity-claude-sonnet-4-5-thinking`	Claude Sonnet 4.5 Thinking	Reasoning
`google/antigravity-gemini-3-pro`	Gemini 3 Pro	Reasoning
`google/antigravity-gemini-3-flash`	Gemini 3 Flash	Fast

Notes:

Models are hardcoded in provider.ts and auto-loaded when the antigravity plugin detects auth
Opus 4.5 is only available as the -thinking variant
Thinking models require topP >= 0.95 (handled automatically by ProviderTransform)

Cerebras

Provider ID: cerebras

Custom Models (defined in config):

Model ID	Display Name
`cerebras/zai-glm-4.7`	GLM-4.7 (Z.AI on Cerebras)

Environment: CEREBRAS_API_KEY

OpenRouter

Provider ID: openrouter

Environment: OPENROUTER_API_KEY

Access to various models including Grok, Llama, etc.

Disabled Providers

These are disabled in agent-core.jsonc:

google-vertex - Direct Vertex AI (redundant with Antigravity)
google-vertex-anthropic - Vertex Claude (redundant with Antigravity)

Agent Defaults

Agent	Default Model	Purpose
Zee	`cerebras/zai-glm-4.7`	Personal assistant
Stanley	`openrouter/x-ai/grok-4.1-fast`	Investing assistant
Johny	`google/antigravity-claude-opus-4-5-thinking`	Learning assistant
title	`cerebras/gpt-oss-120b`	Conversation titles (hidden)
compaction	`google/antigravity-gemini-3-flash`	Context compaction (hidden)

Auth Storage

Provider	Auth Location	Type
Google (Antigravity)	`~/.local/share/agent-core/auth.json` under `google` key	OAuth
Cerebras	Environment variable	API Key
OpenRouter	Environment variable	API Key

Adding New Models

To add custom models to an existing provider, add to the provider section in agent-core.jsonc:

"provider": {
  "provider-id": {
    "models": {
      "model-id": {
        "name": "Display Name",
        "temperature": true,
        "reasoning": false,
        "tool_call": true,
        "attachment": true,
        "limit": { "context": 200000, "output": 8192 },
        "cost": { "input": 0, "output": 0 }
      }
    }
  }
}

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