PEDIGREE: Verifiable Delegation Identity for Agentic AI Systems

This document defines PEDIGREE (Per-Agent Delegation Identity with Governance-Enforced Execution), an identity and delegation framework for AI agents that extends the workload-identity model of SPIFFE (RFC 9542 / draft-ietf-wimse) with cryptographic per-hop delegation, monotonic scope attenuation enforced at mint and at verify, and dual- layer authority enforcement combining an operator-controlled ceiling with per-parent mandate narrowing. PEDIGREE complements AAuth (draft-hardt-aauth-protocol) and AIP (draft-prakash-aip) by providing: (a) dual-enforcement semantics absent from both, (b) Cedar-policy mandates with static-analysis proofs of narrowing, (c) strict cryptographic parent-token re- verification that catches parent-swap attacks missed by append-only token chains, and (d) a native bridge to existing SPIFFE deployments.