fastapi-utilities
Reusable utilities for FastAPI
Decision gist · record as of 2026-08-14
Yes, with conditions. The package offers genuine utility for FastAPI developers seeking to reduce boilerplate—particularly task scheduling and caching—and carries no security vulnerabilities. However, the aging maintenance status (507 days since last release) and Alpha classification mean you should verify that features work with your FastAPI version and be prepared to adapt or fork if compatibility issues arise. Best suited for projects where you can tolerate limited upstream support or are willing to maintain patches yourself.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.7+; latest FastAPI versions require using asynccontextmanager lifespan pattern instead of deprecated on_event decorator.
- Low friction installation with a pure-Python wheel.
- Maintenance status is aging—last release was 507 days ago—so expect limited active development and potential compatibility gaps with newer FastAPI versions, though the description notes workarounds for recent FastAPI lifespan changes.
License · maintenance · safety
MIT (permissive) — MIT license is permissive, allowing use in commercial and private projects with minimal restrictions; attribution is required but no copyleft obligations apply.
last release 2025-03-25 (507 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 140,447 downloads/mo, #11,272 on PyPI
Alternatives
Verify before relying
pip install fastapi-utilities
from fastapi import FastAPI
from contextlib import asynccontextmanager
from fastapi_utilities import repeat_every
@asynccontextmanager
async def lifespan(app: FastAPI):
yield
app = FastAPI(lifespan=lifespan)
@repeat_every(seconds=2)
async def scheduled_task():
print("task")- Whether repeat_every and repeat_at work reliably with current FastAPI versions beyond the documented workaround.
- Performance characteristics of ttl_lru_cache under high concurrency or with large datasets.
- Whether the CLI tool generates projects compatible with modern FastAPI and dependency versions.
What it is and what it does
fastapi-utilities is a collection of helper functions and decorators for FastAPI applications. It reduces boilerplate by providing task scheduling (via repeat_every and repeat_at decorators), a TTL-aware LRU cache decorator, middleware for logging request timing, and a session manager that wraps SQLAlchemy. The package also includes a CLI tool to scaffold new FastAPI projects.
The package depends on click-spinner, croniter, fastapi, pydantic, and sqlalchemy. It is classified as Alpha and has not been actively maintained for over a year, so some features may not align with the latest FastAPI API changes—the description includes guidance on adapting to newer lifespan patterns. It is suitable for developers seeking quick utilities to avoid writing common patterns, but should be evaluated against current FastAPI best practices before adoption in production.
Use it for
- Schedule periodic background tasks (e.g., cleanup, health checks) using @repeat_every or @repeat_at cron decorators within FastAPI startup.
- Add automatic request timing and performance logging to all endpoints via add_timer_middleware.
- Cache expensive function results with automatic expiration using @ttl_lru_cache with configurable TTL and size limits.
- Manage database sessions across requests using FastAPISessionMaker context manager instead of manual get_db patterns.
- Generate a FastAPI project skeleton quickly using the CLI tool to avoid manual boilerplate setup.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, with conditions.
The package offers genuine utility for FastAPI developers seeking to reduce boilerplate—particularly task scheduling and caching—and carries no security vulnerabilities. However, the aging maintenance status (507 days since last release) and Alpha classification mean you should verify that features work with your FastAPI version and be prepared to adapt or fork if compatibility issues arise. Best suited for projects where you can tolerate limited upstream support or are willing to maintain patches yourself.
Install
fastapi-utilities on PyPI
Before you install
Low friction installation with a pure-Python wheel. Maintenance status is aging—last release was 507 days ago—so expect limited active development and potential compatibility gaps with newer FastAPI versions, though the description notes workarounds for recent FastAPI lifespan changes.
Requires Python 3.7+; latest FastAPI versions require using asynccontextmanager lifespan pattern instead of deprecated on_event decorator.
License in practice
MIT license is permissive, allowing use in commercial and private projects with minimal restrictions; attribution is required but no copyleft obligations apply.
Quickstart
pip install fastapi-utilities
from fastapi import FastAPI
from contextlib import asynccontextmanager
from fastapi_utilities import repeat_every
@asynccontextmanager
async def lifespan(app: FastAPI):
yield
app = FastAPI(lifespan=lifespan)
@repeat_every(seconds=2)
async def scheduled_task():
print("task")Verify before relying
- Whether repeat_every and repeat_at work reliably with current FastAPI versions beyond the documented workaround.
- Performance characteristics of ttl_lru_cache under high concurrency or with large datasets.
- Whether the CLI tool generates projects compatible with modern FastAPI and dependency versions.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release <4.0,>=3.7 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 5 packagesclick-spinnercroniterfastapipydanticsqlalchemy |
| Maintenance | Aging 507 days since the last release |
| First released | |
| Downloads | 140,447 / month, #11,272 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 3 - AlphaFramework :: AsyncIOFramework :: FastAPIIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Internet :: WWW/HTTP :: HTTP ServersTopic :: Internet :: WWW/HTTP :: WSGI :: ApplicationTopic :: Internet :: WWW/HTTP :: WSGI :: ServerTopic :: Software Development :: Libraries :: Python ModulesTopic :: Utilities |
Evidence: fastapi_utilities-0.3.1-py3-none-any.whl
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See also fastapi-utils · fastapi-restful · fastapi-cache2 · FastAPI-SQLAlchemy · asyncache · rq-scheduler · fastapi-lifespan-manager · essentials · fastapi-cli · nc-py-api