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Cloudflare Workers AI: Jev integration notes

The model-call fragment, its binding dependency and what to verify before deploying.

2 MIN READ · UPDATED 20 SEP 2026

Start with a Worker that has an AI binding

The fragment below belongs inside an existing Worker with a binding named AI. Follow Cloudflare’s setup instructions first. Pasting it into browser JavaScript will not create that binding.

Send state and questions

The model call uses typesafe/jev. The example asks which team should handle a delivery message. It is a structured question payload; do not replace it with a chat messages array.

Check the result in your Worker

Confirm model access and inspect the actual result before writing the response parser. Cloudflare’s binding, authentication and billing are separate from a direct TypeSafe HTTP request. A working native-API call does not establish that this provider path is configured.

Code example

const result = await env.AI.run("typesafe/jev", {
  state: "My package has not arrived.",
  questions: {
    team: { type: "choice",
      instructions: "Which team handles this request?",
      criteria: { shipping: "Delivery issues", billing: "Payment issues" }
    }
  }
});