Agent Backends

Supported Backends

Backend	Integration Method
Claude Code	Claude Agent SDK (spawn subprocess)
Codex	App-Server (HTTP streaming) + CLI fallback
OpenCode	HTTP API (:4096) + client-side turn loop

Unified Proxy (:18899)

All backends route through a single Anthropic-compatible proxy port.

• Claude requests → direct OpenAI format conversion → upstream
• Codex requests → handleCodexRequest() imported into anthropic-proxy
• process.env.ANTHROPIC_BASE_URL = 'http://localhost:18899'