oc-go-cc

A Go CLI proxy that lets you use your OpenCode Go subscription with Claude Code.

oc-go-cc sits between Claude Code and OpenCode Go, intercepting Anthropic API requests, transforming them to OpenAI format, and forwarding them to OpenCode Go's endpoint. Claude Code thinks it's talking to Anthropic — but your requests go to affordable open models instead.

Why?

OpenCode Go gives you access to powerful open coding models for $5/month (then $10/month). This proxy makes those models work seamlessly with Claude Code's interface — no patches, no forks, just set two environment variables and go.

Features

• Transparent Proxy — Claude Code sends Anthropic-format requests, proxy transforms to OpenAI format and back
• Model Routing — Automatically routes to different models based on context (default, thinking, long context, background)
• Fallback Chains — If a model fails, automatically tries the next one in your configured chain
• Circuit Breaker — Tracks model health and skips failing models to avoid latency spikes
• Real-time Streaming — Full SSE streaming with live OpenAI -> Anthropic format transformation
• Tool Calling — Proper Anthropic tool_use/tool_result <-> OpenAI function calling translation
• Token Counting — Uses tiktoken (cl100k_base) for accurate token counting and context threshold detection
• JSON Configuration — Flexible config file with environment variable overrides and ${VAR} interpolation
• Hot Reload — Watch config file for changes and reload automatically (off by default)
• Background Mode — Run as daemon detached from terminal
• Auto-start on Login — Launch on system startup via launchd (macOS)

Quick Start

1. Install

# macOS / Linux
brew tap samueltuyizere/tap && brew install oc-go-cc

# Windows
scoop bucket add oc-go-cc https://github.com/samueltuyizere/scoop-bucket && scoop install oc-go-cc

Or see INSTALLATION.md for more options.

2. Initialize Configuration

oc-go-cc init

Creates a default config at ~/.config/oc-go-cc/config.json. Edit it to add your API key, or set the environment variable:

export OC_GO_CC_API_KEY=sk-opencode-your-key-here

3. Start the Proxy

oc-go-cc serve

4. Configure Claude Code

export ANTHROPIC_BASE_URL=http://127.0.0.1:3456
export ANTHROPIC_AUTH_TOKEN=unused

5. Run Claude Code

claude

CLI Commands

oc-go-cc serve              Start the proxy server
oc-go-cc serve -b           Start in background (detached from terminal)
oc-go-cc serve --port 8080  Start on a custom port
oc-go-cc stop               Stop the running proxy server
oc-go-cc status             Check if the proxy is running
oc-go-cc init               Create default configuration file
oc-go-cc validate           Validate configuration file
oc-go-cc models             List available OpenCode Go models
oc-go-cc autostart enable   Enable auto-start on login
oc-go-cc autostart disable  Disable auto-start on login
oc-go-cc autostart status   Check autostart status
oc-go-cc --version          Show version

Documentation

Document	Description
INSTALLATION.md	Homebrew, Scoop, build from source, release binaries
CONFIGURATION.md	Config file reference, env vars, model routing, fallback chains
MODELS.md	Model capabilities, costs, and routing recommendations
CONTRIBUTING.md	Development setup, architecture, how it works
TROUBLESHOOTING.md	Common issues and debug mode

License

AGPL-3.0