API· Last updated 2026-09-21

Jev API Explain Endpoint

The public API reference documents one evaluation route — POST https://api.typesafe.ai/v1/systemone — plus GET /v1/models. This page title is not a separate first-party URL in that reference. Treat the capability as something you implement around the official call.

System One models are documented as not writing explanations of their reasoning. An “explain API” that returns a paragraph would contradict that product contract. This site does not sell, issue, or proxy TypeSafe keys. Authenticate with a credential you already have from the console or a documented gateway.

Related search language: Jev API explain endpoint, TypeSafe Jev, Jev decision model, decision automation.

See also the api hub.

Jev API Explain Endpoint: context

What you can show operators: instructions, criteria, probabilities, confidence, and the state fields the question pointed at. That is an audit view you build.

Jev API Explain Endpoint: inputs

Do not add "please explain" as a Noul and expect an essay. Noul returns a float.

Jev API Explain Endpoint: decision logic

If a regulator needs a rationale, write it in code and policy docs, or have a human reviewer author it. Do not hallucinate a TypeSafe rationale field.

Jev API Explain Endpoint: implementation notes

Launch materials say Jev gives up string generation. Believe docs.typesafe.ai if that ever changes.

FAQ

Is this a documented TypeSafe URL?

No. The public reference lists POST /v1/systemone and GET /v1/models. This title is an application pattern around that contract — not a cloned rival endpoint list.

How should I implement it?

Keep one evaluation POST. Put batching, jobs, search, or policy in your code. Do not invent /v1/batch or similar unless TypeSafe documents it.

Does jev.pro issue keys or OpenAPI?

No. Use official SDKs and docs.typesafe.ai. We do not sell credentials.

What this page does not claim

• Official TypeSafe status, logos, or support.
• That jev.pro sells, issues, or proxies API keys.
• Extra first-party HTTP routes beyond POST /v1/systemone and GET /v1/models unless the API reference lists them.
• Invented latency SLOs, search volume, or unofficial prices. List price and rate limits are vendor claims — confirm on models.
• That a schema-constrained answer is automatically factually correct.

Disclaimer

This is an independent unofficial site and is not affiliated with TypeSafe AI; official documentation is available at https://docs.typesafe.ai.

Primary documentation: https://docs.typesafe.ai. Never treat jev.pro as TypeSafe official documentation. We do not sell, issue, or proxy API keys.