treq
Python requests-like API built on top of Twisted's HTTP client.
- Status
- Generally available
- Last checked
- Aging · Sep 5, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
treq is a Python library that provides an easy-to-use interface for making HTTP requests, similar to the popular 'requests' library but built on top of Twisted. It allows developers to write asynchronous code using callbacks or Deferreds.
treq stands out as an asynchronous HTTP client built on top of Twisted, offering developers the flexibility to integrate with existing Twisted-based applications while providing a familiar API similar to 'requests'.
When it fits — and when it doesn’t
A good fit for
Python developers who need to make HTTP requests asynchronously within Twisted-based applications
Projects requiring integration of asynchronous HTTP calls with existing Twisted codebases
Look elsewhere if
Developers looking for a synchronous HTTP client library
Applications that do not require or benefit from non-blocking I/O operations
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Steep learning curve for non-Twisted developers
treq heavily relies on Twisted's Deferreds and callbacks which are not common in other Python HTTP libraries.
- 02
Limited documentation and community support
The official documentation is sparse, and the community around treq is relatively small compared to more popular libraries like requests.
- 03
Performance overhead due to Twisted's event loop
Using Twisted's Deferreds can introduce additional latency and complexity in performance-critical applications.
- 04
Compatibility issues with non-Twisted async libraries
Integrating treq with other Python asynchronous frameworks like asyncio can be challenging due to Twisted's unique event loop model.
What it does well
Asynchronous HTTP requests using Twisted's Deferreds
Support for callbacks and Deferreds in request handling
Simplified API similar to the 'requests' library
Pricing
- Free tier
- YesOpen source — free to use
- Paid from
- $0
- Model
- Flat rate
- Enterprise plan
- No
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up treq
Setup steps, common gotchas and what to check after 30 days.