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OfficialJev Repos & SDKs
Client SDKs
The official SDK hub: Python and JavaScript/TypeScript clients with typed questions and answers plus automatic retries, and the HTTP API for every other language.
- Format
- Docs
- Reading time
- 1 min
- Published by
- TypeSafe AI
- Last verified
- Sep 2026
Works forJev for Classification
Used inJev for Software & DevTools
Highlights
- Two official SDKs: Python and JavaScript/TypeScript.
- Both provide typed questions and answers and retry automatically with a default policy.
- Other languages call the HTTP API directly.
Quickstart
ts
import { choice, TypeSafeClient } from "@typesafe-ai/sdk";
const client = new TypeSafeClient();
const response = await client.systemOne({
state: { document: "I was charged twice. Please fix this ASAP." },
questions: {
category: choice("What is this ticket about?", { billing: null, technical: null, other: null }),
},
});
console.log(response.answers.category.choice);Questions about this entry
Short answers drawn from the linked project or page.
Two: Python and JavaScript/TypeScript. Both provide typed questions and answers plus automatic retries with a default policy; every other language calls the HTTP API directly.
Yes. The hub says both SDKs retry automatically with a default policy, so you only configure retries when you want different timing or limits than the defaults.
No. You can call the HTTP API directly from any language, but the two SDKs add typed questions and answers and handle retries automatically with their default policy.
Typed questions and answers, so you build and read requests through language-native types, plus automatic retries with the SDK's default retry policy.
The hub gives no single command; it links to a Python SDK page and a JavaScript/TypeScript SDK page, each of which covers installation and a first request for that language.
The Python page installs the client and makes a first request, and the JavaScript/TypeScript page installs its client and makes a first typed request with answer types inferred from your questions.
Yes. Only Python and JavaScript/TypeScript have official clients; the hub says you can call the HTTP API directly from any other language.
More Jev resources like this
Release notes for the official Python SDK, from the 14 September 2026 public release through the Pydantic migration and the HTTP/2 extra.
Jev Repos & SDKsDocs#official#docs#sdk
Official
RetryPolicy for the Python SDK: attempt count, exponential backoff with jitter, which HTTP statuses retry, and a total time budget.
Jev Repos & SDKsDocs#official#docs#sdk
Official
The Python SDK error hierarchy: HTTP status classes, rate-limit wait hints, connection and timeout errors, and response-body validation failures.
Jev Repos & SDKsDocs#official#docs#sdk
Official
How the Python SDK types questions: Noul, Choice, and Score as objects or dictionaries, including optional JSON instructions and criteria.
Jev Repos & SDKsDocs#official#docs#sdk
Official
Default settings and environment variable names for the Python SDK, including the API root, model alias, and per-request timeout.
Jev Repos & SDKsDocs#official#docs#sdk
Official
TypeSafeClient, the synchronous Python client: ask questions, list models, and set the key, model, retry policy, and HTTP timeout.
Jev Repos & SDKsDocs#official#docs#sdk
Official
From the Jev guides
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