Recurse

Recurse is a serverless harness for agentic workloads. When generalist agents fall short, your coding agent uses Recurse to create custom specialist agents, deploy them as tools, MCPs, or bots, and measure their output against a bar you set. The manifest file is the contract — it pins identity, runtime, input/output schemas, and which tools the agent may use. The engine refuses a manifest it does not recognize. Your coding agent designs the specialist, Recurse runs and measures candidates, and you refine based on results. Every new account starts with $5 in free credit. Deploy specialists as MCP endpoints that connect to Claude Code, Codex, Cursor, and other standard MCP clients.