mosoo — Open-Source Agent Runtime for Coding Agents
Run OpenAI Codex, Claude Agent SDK, and OpenCode behind one Agent API in isolated sandboxes. Open source, self-hostable, and built for coding agents.
Direct answers
- What is mosoo?
- mosoo is an open-source Agent runtime and API for coding agents. It runs OpenAI Codex, Claude Agent SDK, and OpenCode in isolated sandboxes, keeps Threads and files across Runs, and is self-hostable on Cloudflare.
- Who is mosoo for?
- mosoo is for developers extending coding agents into products and automations who need hosted Threads, files, sandboxes, tool events, and API access without rebuilding a runtime for every integration.
- How does a product call a Mosoo Agent?
- A trusted backend uses the Public Thread API to create or resume a Thread, send user events, stream results, and attach files. Mosoo App-owner tokens stay on servers, not browsers.
- Is mosoo self-hostable?
- Yes. mosoo is open source and self-hostable on Cloudflare. Operators bring their own model and provider keys in the production plane.
- Where can I verify Mosoo's source and API contract?
- Use the GitHub repository, the public API documentation, and the OpenAPI 3.1 document. The product also publishes llms.txt and auth.md for machine-readable discovery.