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Async-first Rust SDK for the TypeSafe AI API
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- Updated Oct 2026
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CommunityJev Repos & SDKs
Jev Rs — abeldzan
Community Rust client for the TypeSafe API with async and optional blocking clients, typed Noul, Choice, and Score questions, retries, and structured errors.
- Stars
- 3
- Language
- Rust
- License
- MIT
- Published by
- Community
- Author
- abeldzan
- Last verified
- Oct 2026
This is one of several Jev listings for the same project. The canonical entry is Jev Rs — yijunyu.
About this project
An async-first Rust client for the TypeSafe AI API. It provides typed System One questions and answers, model discovery, configurable retries, structured errors, and an optional blocking client. Tokio when using the default asynchronous client. The crate is not yet published to crates.io. To use a local checkout: Set your API key without committing it to source control: Then create a client and send a System One request: Question collections can be built once and reused:
Quoted from the project's README. Read the full README.
Highlights
- Builds System One requests with Noul, Choice, and Score builders plus reusable Questions collections keyed by answer name.
- Configures API key, base URL, and default model from the environment with builder precedence and per-call overrides.
- Retries transient failures by default with a replaceable RetryPolicy and preserves raw status, headers, body, and request ID.
- Emits tracing events without installing a subscriber and redacts sensitive headers from diagnostic output.
Watch out
Community client not on crates.io, so it is consumed as a path dependency; the live test makes billable calls and stays ignored by default. Copy reviewed against the repository README on 2026-10-04, not from running it.
Questions about this entry
Short answers drawn from the linked project or page.
It mirrors the shared TYPESAFE_* environment configuration and typed System One questions, but it is independent and community-maintained, unpublished to crates.io, and used through a local path dependency.
You need Rust 1.98.1 or newer, a TypeSafe API key, and Tokio for the async client. The blocking client instead uses the blocking feature for programs without an async runtime.
Transient HTTP, connection, and timeout failures retry by default with a replaceable RetryPolicy, successful responses keep status, headers, body, and request ID, and tracing output redacts sensitive headers.
Only when you opt in with a test key. The suite runs fmt, clippy, tests, docs, and packaging locally, while the live integration test stays ignored because it spends billable API credit.
Yes. Questions collections are built once with Questions::new() and add(name, builder), keyed by the answer name you want back, then handed to a request with .questions(questions). Individual calls read answers back by the same key, so a triage set you reuse across endpoints stays defined in one place.
Builder values win over environment values, and environment values are trimmed. Per call you can override the model, retry policy, timeout, headers and additional body fields where supported. The defaults are TYPESAFE_BASE_URL at https://api.typesafe.ai, TYPESAFE_DEFAULT_MODEL at jev-latest, and a 10-second per-attempt timeout that is builder-only.
MIT. There is a CONTRIBUTING.md with the development workflow and pull request checklist, and a SECURITY.md describing how to report vulnerabilities. The crate also emits tracing events under the typesafe_sdk target without installing a global subscriber, so you opt in with something like RUST_LOG=typesafe_sdk=debug.
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