Jev glossary
API & ModelsTypeSafe playground
Playground
The browser workbench for pasting state and typed questions and inspecting answers, probabilities, confidence, latency, and usage.
- Category
- API & Models
- Also known as
- TypeSafe playground
- Reading time
- 1 min
- Related terms
- 4
- Directory entries
- 94
- Docs
- console.typesafe.ai
- Added
- 2026-09-24
Definition
The playground runs System One queries in the browser so you can try decisions before wiring up code. It shows the numbers needed to set act-or-escalate thresholds: probabilities, confidence, latency, and token usage.
Docs examples also carry share links that open the same request in the playground, which makes reproducing a cookbook configuration a click away.
Tagstoolsplayground
Related terms
Definitions that connect to this one.
TypeSafe ConsoleThe web console for API keys, model management, and the playground, with walkthrough lessons and realistic use cases.API & ModelsConfidence gateA threshold on confidence that decides whether code acts, confirms first, or escalates to a person or a bigger model.Answers & ConfidenceUsageThe response field reporting input and output token counts for a request, used for cost tracking.API & ModelsTypeSafe AIThe company behind Jev and the System One API, including the official SDKs, cookbooks, console, and published workflow evals.Core Concepts
From the Jev directory
Directory entries that go deeper on this term.
Browser playground in the TypeSafe console for trying System One: paste state, define typed questions, and inspect answers with probabilities, confidence, latency, and usage.
Jev CookbooksPlayground#official#playground#demos
Official
Get an API key, manage models, and try the playground: three walkthrough lessons plus realistic use cases like resume screening and ticket routing.
Jev Tools & CLIsPlayground#official#playground#api-keys
Official
A Node.js and pnpm sample project for the TypeSafe AI JavaScript SDK 0.7.0, made because that SDK version fails on Bun with a "Body already used" error. Ships runnable Noul, Choice, Score, and Box examples plus image queries.
Jev Repos & SDKs#github#typescript#sdk
Communityheiwa4126/jev-node1
A Hugging Face Space published by chaoliangUNSW under the slug jev-style-2b-v4-2, titled JevStyle v4.2 · Typed Decisions. It runs on Zero GPU hardware and presents the standard App, Files, and Community tabs for visitors.
Jev Models & ReimplementationsPlayground#open-models#playground#demo
Community
A Hugging Face Space published by the hugging-apps organization under the name J33-Jev · typed decisions. The page shows a Running on Zero hardware status and the standard App, Files, and Community tabs; the listing itself carries no usage documentation.
Jev Demos & ExperimentsPlayground#demo#playground#madewithjev
Community
A Hugging Face Space published by the jevai account under the name Typesafe Ai. The listing shows it running and exposes App and Files tabs, offering a hosted web surface rather than a downloadable package.
Jev Demos & ExperimentsPlayground#playground#demo#community
Community
88 more matching entries in the full directory.
From the Jev AI model community
Posts from builders shipping with Jev right now.