CommunityJev Tools & CLIs
TypeSafe Jev Crate
Rust docs for typesafe-jev 0.2.0, a blocking client that sends one state and a set of Choice, Score, and Noul questions and prices input tokens at list rate.
- Format
- Docs
- Published by
- Community
- Author
- thehumanworks
- Last verified
- Sep 2026
Works forJev for Classification
Used inJev for Software & DevTools
Highlights
- Crate 0.2.0, documented 21 September 2026, MIT OR Apache-2.0. Client::from_env reads TYPESAFE_API_KEY.
- Questions keep the order you add them. A response has one answer per id.
- ask retries connection failures and transient HTTP statuses, honours Retry-After, and returns auth errors immediately.
- Usage::cost_usd prices input tokens at the list constant. Calls are blocking and share one pool.
Quickstart
rust
let client = Client::from_env(Config::default())?;
let response = client.ask(ticket, &questions)?;
let department = response.choice("department")?;Watch out
Third-party crate docs, not TypeSafe's manual. The worked ticket prints illustrative numbers from the doc example.
Questions about this entry
Short answers drawn from the linked project or page.
Third party. It is a community crate maintained by thehumanworks, dual-licensed MIT OR Apache-2.0, and this is its docs.rs page rather than TypeSafe's manual. Vendor behaviour can change without a crate release, so read it as one implementation's reading of the API.
Not as written. It sits on ureq 3.0 and the docs describe calls as blocking and sharing one pool, which is fine in a sync service and awkward inside a tokio task. You'd want to wrap it or reach for an async HTTP client against the same endpoint.
ask retries connection failures and transient HTTP statuses and honours Retry-After, while auth errors return immediately rather than burning retries on a bad key. The docs.rs listing page does not document the attempt cap or backoff shape, so check those before relying on it under load.
Questions keep the order you add them, backed by indexmap, and a response carries one answer per id. Usage::cost_usd prices input tokens against a list constant compiled into the crate, which is the number most likely to drift from your actual invoice.
Yes. Client::with_transport takes any Transport, including a closure from the request body to a Reply, so you can return a canned JSON body and assert on the decoded answer. The docs show exactly that, building a client whose transport returns a fixed noul answer of 0.5.
ask returns Error::TokenLimit, and the caller is expected to split the state and retry; a 422 from a body the API refuses as malformed comes back as Error::InvalidRequest. Rejected credentials return at once as Error::Auth, and a key or Config no request could be sent with is reported by Client::new, not retried.
An AdaptiveLimiter caps concurrency and halves it whenever the API throttles, growing it back as requests succeed. The client is Send plus Sync and shares one connection pool, so you can call it from as many threads as Config::pool_size. Calls are blocking because it sits on ureq.
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