fastapi-sessions
Ready-to-use session library for FastAPI
Decision gist · record as of 2026-08-14
No. The project is archived and abandoned since July 2023 with no maintenance or security updates. For new FastAPI projects, use actively maintained alternatives. For existing projects already using it, evaluate whether you can migrate to a maintained session library or implement session handling directly, as the lack of ongoing support poses a long-term risk.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.6.1 or later; project is archived and no longer maintained, so compatibility with recent FastAPI or Python versions is not guaranteed.
- Installation is straightforward with only two runtime dependencies (fastapi and itsdangerous).
- However, the project is archived and abandoned as of July 2023, with no updates for over two years, so maintenance and security patches are no longer expected.
License · maintenance · safety
MIT (permissive) — MIT license is permissive and places no restrictions on commercial or private use, modification, or distribution.
last release 2021-09-11 (1798 days) · last repo commit 2023-07-11 · 109 stars · archived
0 known vulnerabilities (OSV.dev, 2026-08-14) · 75,112 downloads/mo, #14,750 on PyPI
Alternatives
Verify before relying
pip install fastapi-sessions
from fastapi import FastAPI, Depends
from fastapi_sessions.backends.implementations import InMemoryBackend
from fastapi_sessions.frontends.implementations import SessionCookie
app = FastAPI()
backend = InMemoryBackend()
session_cookie = SessionCookie(secret_key="your-secret-key")
@app.get("/")
async def read_root(session_data=Depends(session_cookie)):
return {"session": session_data}- Whether the in-memory backend is suitable for production use or multi-worker deployments.
- Compatibility with FastAPI versions released after the last update in July 2023.
- Whether custom backends and frontends are documented or straightforward to implement.
What it is and what it does
FastAPI-Sessions is a session authentication library for FastAPI that uses dependency injection to protect routes. It provides an abstract architecture for session backends (how sessions are stored) and frontends (how session IDs are extracted from requests), allowing you to mix and match implementations. The package ships with an in-memory backend and a signed-cookie frontend, and supports Pydantic models for session data validation.
The library is designed to integrate cleanly with FastAPI's auto-generated documentation and dependency injection system. However, the project has been archived since July 2023 and is no longer maintained, meaning no updates, security patches, or support for newer FastAPI or Python versions are forthcoming.
Use it for
- Add cookie-based session authentication to a FastAPI application without writing session middleware from scratch.
- Protect individual routes with session verification using FastAPI's dependency injection system.
- Build a custom session backend by extending the abstract backend interface to store sessions in a database or cache.
- Validate session data using Pydantic models to ensure type safety and automatic OpenAPI documentation.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
No.
The project is archived and abandoned since July 2023 with no maintenance or security updates. For new FastAPI projects, use actively maintained alternatives. For existing projects already using it, evaluate whether you can migrate to a maintained session library or implement session handling directly, as the lack of ongoing support poses a long-term risk.
Install
fastapi-sessions on PyPI
Before you install
Installation is straightforward with only two runtime dependencies (fastapi and itsdangerous). However, the project is archived and abandoned as of July 2023, with no updates for over two years, so maintenance and security patches are no longer expected.
Requires Python 3.6.1 or later; project is archived and no longer maintained, so compatibility with recent FastAPI or Python versions is not guaranteed.
License in practice
MIT license is permissive and places no restrictions on commercial or private use, modification, or distribution.
Quickstart
pip install fastapi-sessions
from fastapi import FastAPI, Depends
from fastapi_sessions.backends.implementations import InMemoryBackend
from fastapi_sessions.frontends.implementations import SessionCookie
app = FastAPI()
backend = InMemoryBackend()
session_cookie = SessionCookie(secret_key="your-secret-key")
@app.get("/")
async def read_root(session_data=Depends(session_cookie)):
return {"session": session_data}Verify before relying
- Whether the in-memory backend is suitable for production use or multi-worker deployments.
- Compatibility with FastAPI versions released after the last update in July 2023.
- Whether custom backends and frontends are documented or straightforward to implement.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.6.1,<4.0 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesfastapiitsdangerous |
| Maintenance | Abandoned 1,798 days since the last release |
| Last repo commit | repository archived |
| First released | |
| Downloads | 75,112 / month, #14,750 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Framework :: AsyncIOIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Internet :: WWW/HTTP :: Session |
Evidence: fastapi_sessions-0.3.2-py3-none-any.whl
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See also fastapi-users · starsessions · fastapi-csrf-protect · fastapi-login · aiohttp-session · fast-depends · fastapi-injectable · fastapi-users-db-sqlalchemy · quart-auth · Flask-Paranoid