v0.1.0 — first Python client for x402 protocol v2

First Python client for the x402 HTTP payment protocol v2 (Linux Foundation, April 2026).

Highlights

• Typed parse_402, select_payment_method, build_payment_header, Client.fetch_paid
• Python 3.9+, zero runtime deps beyond requests
• 38 tests, 99% coverage
• Chain-neutral — signing is a callback, wire it to eth-account / web3.py / remote signer

Install from this release

pip install https://github.com/cryptomotifs/x402-python/releases/download/v0.1.0/x402_python-0.1.0-py3-none-any.whl

PyPI publishing is pending — both PyPI and Test PyPI require passing an hCaptcha visual challenge during registration and TOTP 2FA for publishing. The wheel and sdist here are drop-in ready for when account verification completes.

Links

• Live x402 demo: https://cipher-x402.vercel.app
• Demo source: https://github.com/cryptomotifs/cipher-x402
• TypeScript sibling: https://github.com/cryptomotifs/cipher-x402-client