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Independent async and blocking Rust SDK for the TypeSafe AI System One API
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- 2
- Last pushed
- Updated Oct 2026
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TypeSafe Rust SDK — gilljon
An independent Rust client for the System One API targeting parity with the official Python and JavaScript SDKs at 0.6.0, with async and blocking clients, model discovery, and configurable retries.
- Stars
- 7
- Language
- Rust
- License
- MIT
- Reading time
- 3 min
- Published by
- Community
- Author
- gilljon
- Last verified
- Sep 2026
About this project
An independent Rust client for the TypeSafe AI System One API, maintained at gilljon/typesafe-ai-rs. Async and blocking clients, typed Noul/Choice/Score questions and answers, model discovery, configurable retries, cancellation, and complete HTTP response metadata. The implementation targets the official Python and JavaScript SDKs at version 0.6.0. See the parity notes for exact source revisions and deliberate Rust differences. Quick start · API reference · Examples · Contributing · Security.
Quoted from the project's README. Read the full README.
Works forJev for Scoring
Used inJev for Software & DevTools
Highlights
- Targets parity with the official Python and JavaScript SDKs at version 0.6.0, with parity notes listing revisions and deliberate differences.
- Typed Noul, Choice, and Score questions and answers, model discovery, cancellation, and complete HTTP response metadata.
- Default retries cover 408, 429, 5xx, connection errors, and timeouts, with 500 ms exponential backoff capped at 5 s and up to 25% jitter.
- A 30-second retry budget follows Python while the 60-second retry-header cap follows JavaScript.
- Rust 1.88 or newer with Rustls by default; the synchronous client is behind the blocking feature.
Quickstart
rust
use serde_json::json;
use typesafe_ai_rs::{Client, Noul, Question, SystemOneRequest};
let client = Client::new()?;
let response = client
.system_one(SystemOneRequest::new(
json!({"document": "I was charged twice. Please fix this ASAP."}),
[("billing", Question::from(Noul::new("Is this about billing?")))],
))
.await?;
println!("billing: {}", response.nouls()["billing"].noul);Watch out
MIT-licensed but independently maintained and not an official TypeSafe SDK; needs Rust 1.88+ and TYPESAFE_API_KEY, and its tests use local HTTP servers without a key.
Questions about this entry
Short answers drawn from the linked project or page.
It is a documented claim with a document behind it: the implementation targets both official SDKs at version 0.6.0, and PARITY.md lists the exact source revisions plus deliberate Rust differences. Two of those differences show up in the API: a 30-second retry budget follows Python while the 60-second retry-header cap follows JavaScript, and a one-level score rubric follows Python's validation where JavaScript requires two.
Both. A blocking feature gates a synchronous client intended for use outside async runtimes or inside tokio::task::spawn_blocking, while the async client is always present. Clones share connection pools and dropping the last client releases its resources, and both are exported under aliases matching Python's naming. You need Rust 1.88 or newer, with Rustls as the default TLS backend.
You can pass it through. Question::Raw takes arbitrary JSON for future question types or fields, and extra_body lets you add or override top-level fields on a request. On responses, unknown fields are ignored and unknown answer kinds are skipped from the typed accessors, but they remain available in the raw HTTP response body.
Keys are redacted: authorization, cookies, API keys, and any header containing token or secret. Bodies are a different story and the README says so plainly — they are deliberately not redacted at debug level, so a debug run prints whatever your application sent. It uses the log facade with target typesafe_ai_rs, and info level emits request summaries only.
cargo add typesafe-ai-rs, imported as typesafe_ai_rs, with Rust 1.88 or newer. It uses Rustls by default; disable default features and enable native-tls for native TLS, or enable the blocking feature for the synchronous client.
Up to two retries for HTTP 408, 429 and 5xx responses plus connection errors and timeouts, with exponential backoff starting at 500 ms and capped at 5 s minus up to 25 percent jitter. A 30 s retry budget follows Python, and the 60 s retry-header cap follows JavaScript.
TYPESAFE_API_KEY is required, TYPESAFE_BASE_URL defaults to https://api.typesafe.ai, TYPESAFE_DEFAULT_MODEL to jev-latest, and TYPESAFE_LOG_LEVEL to warn. Explicit configuration takes precedence over environment variables, and empty environment values are ignored.
Other listings of this project
Forks and copies of this project in the directory. This entry is the canonical one.
Unofficial Rust client for the TypeSafe AI API, ported from the official typesafe-sdk-js at v0.7.0. Async on reqwest and serde_json, with typed Noul, Choice, Score, and Box answers plus a typesafe-cli binary for single asks and batch labeling.
Jev Repos & SDKs#rust#sdk#github
Communitymakbari/typesafe-rust-sdk
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