Playground/Language & data
API ACTIVITY

Usage & budget

PLAYGROUND SAFETY LIMITS

Steady requests. Visible limits.

0 active · 0/20 queued

Browser: one start every 1.2 seconds (at most 50/minute), up to 2 active calls and 20 waiting. Shared by examples in this tab. Waiting requests cancel when their run is stopped; a full queue rejects new work without an API call.

Server: 60 requests per rolling 60 seconds and 2 concurrent calls per key, per server instance. Other tabs using the same key share that instance’s allowance. This in-memory safeguard resets on restart and is not a distributed or account-wide quota.

Source: playground policy in lib/requestRateLimit.ts. TypeSafe may impose separate limits. Provider HTTP 429 pauses calls until its reported reset; without a reset time, retry requires your action. HTTP 402 is a budget/billing failure, not a pacing limit. No automatic retries or background replay.

Your TypeSafe API key

Import your key to override the shared server default.

Saved on this browser until removed or site data is cleared. Masked on screen; sent only with Jev requests through this app. The saved value is never displayed.

Connecting

TYPESAFE AI / LANGUAGE & DATA

Messy context.
Grounded choices.

Turn unstructured context into a clear, grounded choice.

Text or documentsFixed optionsGrounded answer

Jev chooses inside a fixed set.
Code decides what that choice may do.

Workspaces7

Open one to try it. Every workspace keeps mock, live and failed results clearly labeled.

Example builder

Explore the original catalog, edit inputs and define your own closed-set questions.

in
Context
out
typed answer

Jev Chat

Explore Jev-driven response composition, source passages, constrained fiction, and visible decisions.

in
Question
out
composed response

Conversation lab

Rank messages and find the person your bot should answer next.

in
Messages
out
best reply target

Document extraction

Select dates, vendors and amounts from values actually present in a document.

in
Document
out
selected fields

YouTube extract

Select original caption passages with Jev scores, cost tracking and timestamp-linked verification.

in
Video captions
out
chronological extract

Vector reranker

Compare Jev, vector similarity and a lexical baseline on the same candidates.

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Search results
out
relevance order

Meme lab

Classify a meme’s humor, audience and clarity from reviewed captions.

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Caption
out
audience fit