I built a SDK that wraps Claude Code (via claude-agent-sdk), Codex, and Kimi-cli behind a single API.

  No API keys needed — it uses the CLI-based agent backends directly. Define tools with Zod, set up multi-agent handoffs, add middleware for logging or guardrails, and swap between providers by changing one string.

  Works great if you want Claude Code as your primary agent but want the option to fall back to Codex or bring your own provider.

GitHub: https://github.com/odysa/one-agent-sdk