[SEP-0001] Agent Identity Profile (AIP): A Structured Identity Metadata Framework for AI Agents

[fudaiyf]

Summary

This issue tracks SEP-0001, a Specification Enhancement Proposal to introduce the
Agent Identity Profile (AIP) — a structured identity metadata framework for AI agents
operating within and across trust domains.

The full specification is available at:
docs/standard/sep/sep-0001-agent-identity-profile.md

Motivation

As AI agents increasingly operate on behalf of users across organizational boundaries,
there is a critical gap between workload-level credential systems (WIMSE WIT/WPT),
user-level authentication protocols (OIDC, OIDC-A), and operation-level authorization
frameworks (AOAT). AIP bridges this gap by providing a unified, cacheable, and verifiable
identity metadata document that can be referenced throughout an agent's lifecycle.

Scope

The AIP specification defines:

• AIP Data Model: Agent identity attributes, owner bindings, capability declarations,
  integrity assurances, governance policies, credential lifecycle state, and observability
• Document Partitioning: AIP-Static and AIP-Dynamic split strategy
• Lifecycle State Machine: States and transitions for agent identity documents
• Discovery & Resolution Protocol: Well-known endpoints, registry API, and WebFinger
  cross-domain resolution
• Delegation Chains: Multi-agent identity and scope narrowing constraints
• Cross-Domain Projection: Federated trust environment support
• Security Considerations: Threat model and mitigation strategies

Branch & Contribution

• Branch: docs/sep-0001-agent-identity-profile
• Spec location: docs/standard/sep/sep-0001-agent-identity-profile.md
• SEP Process: See Standards & Proposals

How to Participate

1. Comment on this Issue to discuss the proposal's direction and scope
2. Review the full spec at docs/standard/sep/sep-0001-agent-identity-profile.md
3. Submit PRs against the spec document for suggested changes
4. Follow the SEP lifecycle for status transitions

Checklist

• SEP document drafted (sep-0001-agent-identity-profile.md)
• Document placed in docs/standard/sep/
• VitePress navigation entry added
• Community review period (target: 30 days)
• Address feedback and iterate
• Maintainer decision: Accept / Request Changes / Reject

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Labels: sep, specification, identity
Milestone: v0.2.0