MPP Service Discovery

Before writing code

Fetch live docs:

1. Fetch https://paymentauth.org/draft-payment-discovery-00.html for the canonical service discovery specification
2. Web-search mpp service discovery openapi x-payment-info llms.txt for implementation examples
3. Web-search site:mpp.dev directory for the MPP payments directory and listing requirements
4. Fetch https://mpp.dev/overview for discovery-related documentation

Conceptual Architecture

What Service Discovery Does

MPP service discovery allows AI agents to autonomously find, understand, and pay for HTTP services. It uses two mechanisms:

1. OpenAPI Document — Machine-readable API spec with payment extensions
2. llms.txt — Human/AI-readable service description for LLM agent discovery