Typed decisions for AI agents as an MCP tool: yes/no probability (noul), choice, and score in one fast request. Backed by the TypeSafe System One model.
View on GitHub ↗Typed decisions for AI agents, as an MCP tool. Ask yes/no probability (noul), choice among options, or score on ordered levels about any JSON application state — all questions answered in one fast request.
Backed by the TypeSafe System One model (Jev) via @typesafe-ai/sdk, with an opt-in Cloudflare Workers AI provider — see Providers.
Add to claudedesktopconfig.json (~/Library/Application Support/Claude/) — the same JSON shape works for codex, goose, and pi:
Then ask your agent anything answerable with a judgment — it can call the judge tool.
By default the server speaks stdio. Set JUDGETRANSPORT=http to serve the MCP Streamable HTTP transport (spec revision 2026-07-28) at POST /mcp instead:
- JUDGETRANSPORT: stdio (default) or http. Any other value exits with an error. - HTTPHOST: bind address, default 127.0.0.1. - HTTPPORT: port, default 8080; must be 1-65535.
Serving is stateless: each request is handled independently, with no protocol-level sessions (GET/DELETE on /mcp return 405).
Security warning: the HTTP endpoint is unauthenticated. Production remote deployments must be fronted by an authenticating OAuth 2.1 proxy per the MCP 2026-07-28 authorization specification.
Judge returns typed answers your code can branch on — and a guaranteed fallback envelope when the model is unreachable.
See CONTRIBUTING.md to regenerate the demo.
Requires Node = 20 and TYPESAFEAPIKEY in the environment.
From the project README.
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