grain
Install

mcp

Configure MCP hosts

Wire Claude Code, Codex, Cursor, Grok Build, OpenCode, and other MCP clients to grain.

grain MCP speaks stdio (grain mcp) and Streamable HTTP (grain up --mcp → http://127.0.0.1:7476/mcp). Hosts do not share one config format — pick yours, choose a transport, and inject the snippet.

Enable the daemon

bash 
grain up                 # required for stdio tools
grain up --mcp           # also exposes Streamable HTTP MCP

Agent configs

Transport

JSON

Tips

  • Prefer stdio for local IDE agents when the host can spawn a process.
  • Long grain_exec work can look like a hang — raise the host’s tool timeout (e.g. 600s) and check guest load with grain_stats.
  • Full tool list: MCP overview.