fpxpy 0.2.0

Fiberplane studio integration with FastAPI

fpx.py

Provides instrumentation and route detection for FastAPI apps.

Installation

The package is available on PyPy, installing it as simple as

uv add fpxpy

Usage

After installing fpxpy either from source or from pip, simply add the second line referencing your FastAPI app.

from fpxpy import setup

app = FastAPI()
setup(app)

Running

After that, when running your FastAPI server, be sure to set the FPX_ENDPOINT env variable pointing to your instance of Fiberplane Studio, e.g:

$ FPX_ENDPOINT=http://localhost:8788/v1/traces uv run fastapi dev main.py

Development

This package uses uv for its dependencies and running the tooling. The following tools are used for linting, checking & formatting. They are listed as part of the dev dependencies (and will be installed by uv by default).

• MyPy for type checking. Run: uv run mypy .
• ruff for linting (uv run ruff check) and formatting (uv run ruff format)