Clef Demo

Clef Playground docs

Submit a State plus typed Questions (`noul` / `choice` / `score`). The backend builds the official Clef System One–compatible payload and returns per-option probabilities.

Jev & System One compatibility

Clef follows the System One API used by Typesafe’s Jev. Teams with an existing Jev integration can switch to Clef by changing the endpoint and model — same state, question types, and structured answers. This playground uses that schema so you can prototype before updating production agents.

  1. Describe the environment in State (plain text or JSON).
  2. Add one or more typed questions (noul, choice, or score).
  3. Click Run Clef — or open the playground templates. Identical runs within 24 hours reuse KV cache at no cost.

Raw Workers AI endpoints are not exposed. This site is an independent demo — not affiliated with Cloudflare.

This is an independent demo tool for the Clef model. Not affiliated with Cloudflare. Clef model available under Apache 2.0 license.