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A DeepSeek-native AI coding agent for your terminal.

A config- and plugin-driven harness — a single static Go binary, tuned around DeepSeek's prefix cache so token costs stay low across long sessions.

Important

Community · 加入社区 — bilingual Discord for setup help (#help / #求助), workflow showcases, and feature ideas. → https://discord.gg/XF78rEME2D

Features

• Config-driven. Providers, the agent, enabled tools, and plugins are all declared in reasonix.toml. No hardcoded models.
• Multi-model & composable. DeepSeek ships as a preset; any OpenAI-compatible endpoint is a config entry, not new code. Optionally run two models together (executor + planner) in separate, cache-stable sessions.
• Plugin-driven. MCP servers contribute tools, prompts, and resources; Extension Protocol v1 sidecars can also intercept runtime events, contribute Providers and structured UI, and ship versioned plugin packages.
• Cache-aware context maintenance. Startup injects a small stable environment summary, stale tool output is snipped/pruned before summary compaction, and the built-in tool schema contract is documented for regression review.
• Zero-friction distribution. CGO_ENABLED=0 single binary; cross-compile to six targets with one command. The result is a fully self-contained static binary — nothing to install on the target machine beyond the binary itself.

Install

Choose the path that matches how you want to use Reasonix. The CLI/TUI, desktop app, and VS Code extension all use the same local Reasonix engine.

Path A: CLI / TUI

Install the native binary through npm on any supported platform, or use Homebrew on macOS:

npm i -g reasonix                  # any OS; pulls the prebuilt native binary
brew install esengine/reasonix/reasonix   # macOS

Prebuilt archives (darwin|linux|windows × amd64|arm64) and SHA256SUMS are on every GitHub release.

Path B: Desktop app

Use the official download page for the latest desktop build.

Platform	Package	Architecture
macOS	Universal .dmg or .zip	Apple Silicon / Intel
Windows	Installer .exe or portable .zip	x64 / ARM64
Linux	.deb or .tar.gz	x64

Windows installers are code-signed through SignPath.io with a free certificate provided by the SignPath Foundation.

Path C: VS Code extension

Complete Path A first. The extension does not bundle the CLI; it starts your local reasonix acp backend and adds native chat, editor context, tool-call approvals, model selection, and workspace sessions.

• VS Code: install from Visual Studio Marketplace
• VSCodium / Eclipse Theia: install from Open VSX Registry
• Extension ID: SivanLiu.reasonix-agent · source and usage guide

Path D: Build from source

git clone https://github.com/esengine/DeepSeek-Reasonix.git
cd DeepSeek-Reasonix
make build      # -> bin/reasonix(.exe)
make cross      # -> dist/ (darwin|linux|windows × amd64|arm64)

Quick start

CLI / TUI

These commands are for the CLI/TUI installed through Path A:

reasonix setup                      # configure a provider and model
reasonix                            # start an interactive session
reasonix run "implement the TODOs in main.go"

In an interactive session, run /init when you want Reasonix to create project instructions.

Desktop app

Download the installer for your platform from the official download page, install and launch Reasonix, then configure a provider and model in the app. The CLI commands above are not required for the desktop app.

For advanced CLI usage and configuration, see the CLI reference, Guide, and configuration paths.

Documentation

• Getting started: Guide · CLI reference · Configuration paths · ACP editor integration
• Features & troubleshooting: Subagent profiles · Context Engine v2 · Capability diagnostics · Recovery and updates · Bot guide · Checkpoints & rewind
• Engineering & migration: Spec · Task contracts & pause policy · Tool contract · Migrating from 0.x
• Extension development: Extensions · Plugin packages and Manifest v1 · Extension Protocol · Go SDK and starter

Star History

Acknowledgments

A small list of folks whose work has shaped Reasonix the most — the current top 20 contributors by commit count. The full contributor graph is on GitHub.

Contributor	Contributor	Contributor	Contributor
SivanCola	esengine	ttmouse	lifu963
reasonix (anonymous)	HUQIANTAO	GTC2080	light-front-theory
merge-order-check (anonymous)	Li-Charles-One	eghrhegpe	wufengfan (anonymous)
CVEngineer66	dependabot[bot]	lanshi17	SuMuxi66
CnsMaple	cyq1017	JesonChou	XTLine

Also a separate thank-you to Bernardxu123 for designing the project logo, and to AIGC Link for promoting the project on XiaoHongShu.

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_{MIT — see LICENSE
Built by the community at esengine/DeepSeek-Reasonix}

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_{Support this project}

If Reasonix has been useful and you'd like to say thanks, you can. It stays a coffee, not a contract — donations don't buy feature priority or change how issues get triaged.

• International — PayPal: paypal.me/yuhuahui
• 国内 — 微信支付（扫码）