mosoo

mosoo is an open-source, self-hostable runtime platform for deploying and managing coding agents. It provides a unified API to run Claude Agent SDK, OpenAI Codex, and OpenCode in isolated sandboxes, with support for streaming, tool calls, session replay, and durable threads. Agents can be deployed via CLI or web console and self-hosted on Cloudflare Workers with no additional infrastructure setup.

Designed for developers building agent-powered applications, mosoo handles agent lifecycle management, file handling, and credential management. The platform uses ephemeral sandboxes that spin up on demand and tear down when sessions end, eliminating standing compute costs. It supports multiple runtime harnesses through a normalized interface, allowing the same agent configuration to run across different providers.