ureq
Simple, blocking HTTP client for Rust. Zero async complexity — synchronous API with no tokio/async-std dependency. Small binary footprint. Supports TLS (via rustls or native-tls), JSON (via serde_json feature), redirects, and timeouts. Perfect for CLI tools, scripts, and simple applications that don't need async HTTP.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Uses rustls by default — modern TLS. No built-in credential store; auth headers are application responsibility.
⚡ Reliability
Best When
Building Rust CLI tools or simple utilities that need HTTP without async runtime complexity.
Avoid When
Your application needs concurrent HTTP requests or is already using an async runtime.
Use Cases
- • Make HTTP requests in Rust CLI tools without async runtime overhead: ureq::get(url).call()?
- • Build simple REST API clients in Rust without tokio dependency for binary size or complexity reduction
- • Implement sync HTTP utilities in Rust libraries that shouldn't force async on consumers
- • Fetch web data in Rust scripts and tools where reqwest's async API is overkill
- • Prototype HTTP integrations quickly with ureq's simple chaining API before migrating to reqwest if needed
Not For
- • High-concurrency HTTP workloads — use reqwest (async) for concurrent requests without blocking threads
- • Complex middleware, retry, or connection pooling — reqwest + tower provides richer HTTP middleware
- • Applications already using tokio that need async HTTP — reqwest integrates better with tokio
Interface
Authentication
HTTP client — auth configured via header() method. No built-in OAuth flow.
Pricing
MIT licensed open source library.
Agent Metadata
Known Gotchas
- ⚠ ureq treats 4xx and 5xx status codes as errors by default — check response.status() before calling .into_string() or use response.into_string() which succeeds on any status
- ⚠ Response body must be read before the connection can be reused — always call .into_string() or .into_reader() even for error responses
- ⚠ ureq v2.x requires reading the entire response body — not reading it leaks the connection; always consume the response
- ⚠ TLS defaults to rustls — use ureq::builder().tls_connector() for native-tls if rustls causes issues with corporate cert stores
- ⚠ Timeouts are per-read not per-response — set both connect_timeout and read_timeout: ureq::builder().timeout(Duration::from_secs(5))
- ⚠ ureq is blocking — using it in async code blocks the tokio thread; use tokio::task::spawn_blocking() or switch to reqwest
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for ureq.
Scores are editorial opinions as of 2026-03-06.