python

x402 REST API - Python

This is the Python implementation of the x402 REST API sample using FastAPI.

Requirements

• Python 3.10+
• uv package manager
• make
• Stripe account with crypto payments enabled
• EVM wallet with testnet USDC

Setup

1. Configure environment variables:

cp ../../../.env.template .env
# Edit .env with your credentials

2. Install dependencies:

make install

Run the server

• make run — start the local sample server

make run

Development commands

• make lint — run lint and formatting checks without changing files
• make format — apply automatic formatting fixes
• make typecheck — run the sample's type checker or build validation
• make test — run the automated test suite
• make ci — run the full local CI sequence (install, lint, typecheck, and test)

make lint
make format
make typecheck
make test
make ci

Test the sample

purl http://localhost:4242/paid