SD Agent: Selective Disclosure for Agent Discovery and Identity Management

This document defines how Selective Disclosure for JWTs (SD-JWT) integrates with Agent-to-Agent (A2A) systems to provide privacy- preserving agent discovery and cryptographically verifiable identity management. It specifies the SD-Card format - an SD-JWT encoding of Agent Cards that enables selective disclosure of agent capabilities, contact information, and operational metadata while maintaining cryptographic integrity and preventing correlation across different interaction contexts.