Changelog¶

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased ¶

[v3.2.0] - 2026-03-22¶

Added¶

Pydantic auto-validation: request_model validates input, returns 422 on failure
Pydantic auto-serialization: response_model strips extra fields from responses
Server-Sent Events: @resp.sse for real-time streaming
resp.stream_file() for streaming large files without loading into memory
@api.after_request() hooks
api.group("/prefix") for route groups and API versioning
api.graphql("/path", schema=schema) one-liner GraphQL setup
api = responder.API(request_id=True) for automatic request ID generation
Built-in rate limiter: RateLimiter(requests=100, period=60).install(api)
MessagePack format support: await req.media("msgpack")
req.is_json, req.path_params, req.client properties
api.exception_handler() decorator for custom error handling
Lifespan context manager support
uuid and path route convertors
PEP 561 py.typed marker
Pydantic support for OpenAPI schema generation

Changed¶

Dependencies flattened: pip install responder gets everything
Core deps reduced to starlette + uvicorn
TestClient lazy-loaded (no httpx import in production)
Before-request hooks can short-circuit by setting status code
Removed poethepoet task runner

Fixed¶

Multipart parser losing headers when parts have multiple headers
url_for() with typed route params ({id:int})
resp.body encoding crash on bytes content
GraphQL text query missing await
Streaming responses not sending Content-Type headers
Python 3.9 compatibility for union type syntax

v3.0.0 - 2026-03-22¶

Added¶

Platform: Added support for Python 3.10 - Python 3.13
CLI: responder run now also accepts a filesystem path on its <target> argument, enabling usage on single-file applications.
CLI: responder run now also accepts URLs.

Changed¶

Platform: Minimum Python version is now 3.9 (dropped 3.6, 3.7, 3.8)
Dependencies: Dramatically reduced core dependency count (10 → 5)
- Removed requests, requests-toolbelt, rfc3986, whitenoise
- Moved apispec and marshmallow to openapi optional extra
- Replaced rfc3986 with stdlib urllib.parse
- Replaced requests-toolbelt multipart decoder with python-multipart
- Replaced deprecated starlette.middleware.wsgi with a2wsgi
- Switched from WhiteNoise to ServeStatic
Dependencies: Pinned starlette[full]>=0.40 (was unpinned)
GraphQL: Upgraded to graphene>=3 and graphql-core>=3.1 (from graphene<3 and graphql-server-core, which is unmaintained)
GraphQL: Updated GraphiQL UI from 0.12.0 (2018) to 3.0.6 with React 18
Extensions: All of CLI-, GraphQL-, and OpenAPI-Support modules are extensions now, found within the responder.ext module namespace.
Packaging: Migrated from setup.py to declarative pyproject.toml

Removed¶

Platform: Removed support for EOL Python 3.6, 3.7, 3.8
Status codes: Removed deprecated resume_incomplete and resume aliases for HTTP 308 (marked for removal in 3.0)
CLI: responder run --build ceased to exist

Fixed¶

Routing: Fixed dispatching static_route=None on Windows
uvicorn: --debug now maps to uvicorn’s log_level = "debug"
Tests: Fixed deprecated httpx TestClient usage

v2.0.5 - 2019-12-15¶

Added¶

Update requirements to support python 3.8

v2.0.4 - 2019-11-19¶

Fixed¶

Fix static app resolving

v2.0.3 - 2019-09-20¶

Fixed¶

Fix template conflicts

v2.0.2 - 2019-09-20¶

Fixed¶

Fix template conflicts

v2.0.1 - 2019-09-20¶

Fixed¶

Fix template import

v2.0.0 - 2019-09-19¶

Changed¶

Refactor Router and Schema

v1.3.2 - 2019-08-15¶

Added¶

ASGI 3 support
CI tests for python 3.8-dev
Now requests have state a mapping object

Deprecated¶

ASGI 2

v1.3.1 - 2019-04-28¶

Added¶

Route params Converters
Add search for documentation pages

Changed¶

Bump dependencies

v1.3.0 - 2019-02-22¶

Fixed¶

Versioning issue
Multiple cookies.
Whitenoise returns not found.
Other bugfixes.

Added¶

Stream support via resp.stream.
Cookie directives via resp.set_cookie.
Add resp.html to send HTML.
Other improvements.

v1.1.3 - 2019-01-12¶

Changed¶

Refactor _route_for

Fixed¶

Resolve startup/shutdwown events

v1.2.0 - 2018-12-29¶

Added¶

Documentations

Changed¶

Use Starlette’s LifeSpan middleware
Update denpendencies

Fixed¶

Fix route.is_class_based
Fix test_500
Typos

v1.1.2 - 2018-11-11¶

Fixed¶

Minor fixes for Open API
Typos

v1.1.1 - 2018-10-29¶

Changed¶

Run sync views in a threadpoolexecutor.

v1.1.0 - 2018-10-27¶

Added¶

Support for before_request.

v1.0.5- 2018-10-27¶

Fixed¶

Fix sessions.

v1.0.4 - 2018-10-27¶

Fixed¶

Potential bufix for cookies.

v1.0.3 - 2018-10-27¶

Fixed¶

Bugfix for redirects.

v1.0.2 - 2018-10-27¶

Changed¶

Improvement for static file hosting.

v1.0.1 - 2018-10-26¶

Changed¶

Improve cors configuration settings.

v1.0.0 - 2018-10-26¶

Changed¶

Move GraphQL support into a built-in plugin.

v0.3.3 - 2018-10-25¶

Added¶

CORS support

Changed¶

Improved exceptions.

v0.3.2 - 2018-10-25¶

Changed¶

Subtle improvements.

v0.3.1 - 2018-10-24¶

Fixed¶

Packaging fix.

v0.3.0 - 2018-10-24¶

Changed¶

Interactive Documentation endpoint.
Minor improvements.

v0.2.3 - 2018-10-24¶

Changed¶

Overall improvements.

v0.2.2 - 2018-10-23¶

Added¶

Show traceback info when background tasks raise exceptions.

v0.2.1 - 2018-10-23¶

Added¶

api.requests.

v0.2.0 - 2018-10-22¶

Added¶

WebSocket support.

v0.1.6 - 2018-10-20¶

Added¶

500 support.

v0.1.5 - 2018-10-20¶

Added¶

File upload support

Changed¶

Improvements to sequential media reading.

v0.1.4 - 2018-10-19¶

Fixed¶

Stability.

v0.1.3 - 2018-10-18¶

Added¶

Sessions support.

v0.1.2 - 2018-10-18¶

Added¶

Cookies support.

v0.1.1 - 2018-10-17¶

Changed¶

Default routes.

v0.1.0 - 2018-10-17¶

Added¶

Prototype of static application support.

v0.0.10 - 2018-10-17¶

Fixed¶

Bugfix for async class-based views.

v0.0.9 - 2018-10-17¶

Fixed¶

Bugfix for async class-based views.

v0.0.8 - 2018-10-17¶

Added¶

GraphiQL Support.

Changed¶

Improvement to route selection.

v0.0.7 - 2018-10-16¶

Changed¶

Immutable Request object.

v0.0.6 - 2018-10-16¶

Added¶

Ability to mount WSGI apps.
Supply content-type when serving up the schema.

v0.0.5 - 2018-10-15¶

Added¶

OpenAPI Schema support.
Safe load/dump yaml.

v0.0.4 - 2018-10-15¶

Added¶

Asynchronous support for data uploads.

Fixed¶

Bug fixes.

v0.0.3 - 2018-10-13¶

Fixed¶

Bug fixes.

v0.0.2 - 2018-10-13¶

Changed¶

Switch to ASGI/Starlette.

v0.0.1 - 2018-10-12¶

Added¶

Conception!