claude-code-go

[](https://go.dev/) [](./LICENSE) [](https://github.com/daewoochen/claude-code-go/stargazers)

A terminal-native coding agent runtime in Go, powered by Eino.

claude-code-go is an opinionated Go implementation of the core runtime ideas behind modern coding agents:

• multi-turn agent loops
• structured tool calling
• streaming events
• resumable sessions
• checkpoint-ready execution graphs
• MCP-friendly tool registration

It is designed for people who want the Claude Code style architecture in a Go-first, hackable, open-source codebase.

• One of the clearest Go codebases for building a real coding agent
• Graph-based runtime, not a toy wrapper around an API call
• Session persistence, tool loops, permission policy, and MCP hooks included
• Small enough to understand, serious enough to extend

If you want to build your own terminal agent, internal engineering copilot, or remote coding worker in Go, this repo is meant to save you weeks.

$ go run ./cmd/ccgo run --provider mock "hello from ccgo"
[system] calling model
mock: hello from ccgo

$ go run ./cmd/ccgo print --provider mock "use echo from stream mode"
{"type":"system","message":"calling model", ...}
{"type":"tool_result","tool_name":"echo", ...}
{"type":"assistant_delta","delta":"Tool echo returned: ...", ...}
{"type":"result","reason":"completed", ...}

| Capability | Status | | --- | --- | | Go-native CLI runtime | Yes | | Eino graph orchestration | Yes | | Multi-turn agent loop | Yes | | Tool registry + permission policy | Yes | | Session transcript + snapshot resume | Yes | |