Creating Python x402 Facilitator with Bazaar Discovery

Build Python x402 services with the Bazaar discovery extension for automatic cataloging and indexing of payment-gated APIs.

Prerequisites

Before using this skill, ensure:

1. Python 3.10+ is installed
2. x402-avm with extensions is available: pip install "x402-avm[extensions,avm]"
3. Familiarity with x402 resource server and facilitator concepts
4. Web framework installed: pip install "x402-avm[extensions,avm,fastapi]" or [...,flask]

What Bazaar Discovery Does

Bazaar is a resource discovery protocol built into x402. It allows payment-gated APIs to advertise:

• What they accept as input -- query parameters for GET/HEAD/DELETE, or request body schemas for POST/PUT/PATCH
• What they return as output -- the shape, type, and examples of the response data