Open· Last updated 2026-09-21

Jev quick reference

This is a desk card, not a second API reference. If a field name disagrees with TypeSafe, TypeSafe wins: docs.typesafe.ai. Independent. No keys from this site.

Independent angle (cover, do not clone)

Win delta: operator-facing table (primitive → consume in code → common footgun) plus pin/alias rows. We do not clone a rival “cheat sheet” URL tree or dump the official OpenAPI.

Question and context

You assemble state (string, object, or array of text), ask a questions map, and branch in your code. English is the primary training language (models page). Images, audio, and video are not accepted.

Official evaluation API (vendor docs): POST https://api.typesafe.ai/v1/systemone. List aliases: GET https://api.typesafe.ai/v1/models.

Core concepts

Mix types in one request (fan-out). Conjunctions (AND/OR) stay in application code.

Practical approach

Pins

• Prod with floors: jev-1.13.0 (or the current versioned id).
• Dev: jev-latest is fine if you do not tune thresholds.
• Door strings differ: first-party jev-1.13.0 vs some marketplaces typesafe/jev-1.13. Do not paste across doors. See version pinning.

Always log: response.model, usage.input_tokens, full probabilities, question-pack SHA, action taken.

Vendor list price (confirm on models page): jev-1.13 $0.042 per million input tokens; output free on that same page — vendor claim. Unused distractors still bill.

Env: official SDKs read TYPESAFE_API_KEY (or the door’s name). We do not proxy it.

HTTP you must map: 401 / 422 / 429 / 529 — error envelope.

Risks and trade-offs

A quick-reference that people copy into prod without a gold set is how floors rot. Jaggedness: keep arithmetic, date math, and counts in code. Schema-safe ≠ factually correct.

What this page does not claim

• Not complete OpenAPI.
• Not live rate-limit numbers (re-read TypeSafe).
• Not a status page.

FAQ

Where is the long-form path? Learning path and playbook.

Noul vs Choice confidence? Not interchangeable (TypeSafe jaggedness / confidence docs). Fit separately.

Boolean on first-party? Public first-party shape uses Noul. Do not copy a marketplace boolean example into /v1/systemone without checking that door.

Disclaimer

This is an independent unofficial site and is not affiliated with TypeSafe AI; official documentation is available at https://docs.typesafe.ai. Never treat jev.pro as TypeSafe official documentation. We do not sell, issue, or proxy API keys.

Open-cluster pages are independent field-guide notes. Replicas and third-party interfaces mentioned anywhere on jev.pro are not Jev and not endorsed. Hub: Open. Siblings: learning path, common mistakes, request schema. Canonical: https://docs.typesafe.ai.