UCP AP2 Autonomous Payment Mandates
Implements cryptographic payment mandates for fully autonomous agent commerce via the Agent Payments Protocol (AP2).
The ucp-ap2-mandates skill enables the development of advanced autonomous commerce systems where AI agents can authorize payments without real-time human-in-the-loop intervention. It provides comprehensive guidance on implementing the Agent Payments Protocol (AP2) and Universal Commerce Protocol (UCP) extensions, specifically focusing on SD-JWT credentials and JWS Detached Content signatures. This skill ensures secure transactions by enforcing 'Security Locks' to prevent downgrade attacks and provides a structured 7-step flow for agent discovery, merchant signing, and mandate verification, making it essential for building the next generation of agentic shopping experiences.