Install

notslowapi is published on PyPI as notslowapi. It requires Python 3.10 or newer (requires-python = ">=3.10"; 3.10 through 3.14 are listed in the package classifiers) and pydantic>=2.9.0. Pydantic v1 is not supported; see the FAQ.

uv

uv add notslowapi[granian]

pip

pip install "notslowapi[granian]"

Quote the argument if your shell expands square brackets.

What the base install contains

notslowapi without extras installs the framework, the vendored Starlette under notslowapi.starlette, Starlette's own requirement anyio, and pydantic, typing-extensions, typing-inspection and annotated-doc. No ASGI server is included. Nothing is installed under the starlette or fastapi names, and existing installs of those packages are left alone.

Extras

granian pulls granian>=2.0, the server this project recommends. See Deploy.

uv add notslowapi[granian]

standard is FastAPI's extra minus fastapi-cli and fastar, which depend on the PyPI fastapi package and would install it next to notslowapi. It adds httpx (test client), jinja2 (templates), python-multipart (forms and uploads), email-validator, uvicorn[standard] (uvicorn with uvloop and httptools), pydantic-settings and pydantic-extra-types.

uv add notslowapi[standard]

The two combine:

uv add "notslowapi[granian,standard]"

Check the install

python -c "import notslowapi; print(notslowapi.__version__)"

prints 0.1.0. The vendored Starlette reports its own version:

python -c "import notslowapi.starlette; print(notslowapi.starlette.__version__)"

prints 1.6.0.

Next

Deploy covers the server command line. Compatibility covers what to change in an existing FastAPI project, which is the imports.