Apirelio FastAPI SDK

Documentation · PyPI · Apirelio

Connect FastAPI errors, latency and releases to the affected customers without capturing request or response payloads.

Native FastAPI/Starlette ASGI middleware for privacy-safe, customer-aware API analytics. It uses the resolved route template and only enqueues after the response completes.

pip install apirelio-fastapi

import os

from fastapi import FastAPI
from apirelio_fastapi import install_apirelio

app = FastAPI()

install_apirelio(
    app,
    api_key=os.environ.get("APIRELIO_API_KEY", ""),
    endpoint=os.environ.get("APIRELIO_ENDPOINT", "https://apirelio.com"),
    service="billing-api",
    environment="production",
    include_routes=("/api/**",),
    exclude_routes=("/api/health", "/api/internal/**"),
    resolve_customer=lambda request: {
        "id": str(request.state.user.company_id),
        "plan": request.state.user.plan,
    } if hasattr(request.state, "user") else None,
)

The installer stores the client at app.state.apirelio and flushes it during FastAPI shutdown. Bodies, query strings, cookies, authorization values, email addresses and IP addresses are never captured. Python 3.9+, FastAPI 0.100+ and FastAPI versions below 1.0 are supported.