AP2 Verifiable Digital Credentials (VDC) Framework

Before writing code

Fetch live docs:

1. Fetch https://ap2-protocol.org/specification/ for the VDC framework specification
2. Fetch https://ap2-protocol.org/topics/core-concepts/ for VDC conceptual overview
3. Web-search site:github.com google-agentic-commerce AP2 src/ap2/types mandate for VDC type definitions
4. Web-search ap2 protocol verifiable digital credentials VDC for community guides

Conceptual Architecture

What VDCs Are

Verifiable Digital Credentials (VDCs) are tamper-evident, portable, and cryptographically signed digital objects that serve as the trust building blocks for AP2 transactions. They provide:

• Non-repudiation — Signed credentials prove who authorized what
• Tamper evidence — Any modification invalidates the signature
• Portability — Credentials can be passed between agents and systems
• Selective disclosure — Only necessary data is revealed to each party