Identity, Reputation & Capability

Capability Directory

Decentralized discovery protocol where specialized AI agents register roles and skills for dynamic orchestration.

A decentralized discovery protocol lets specialized AI agents register their roles, skills, and affordances on-chain so that orchestrator agents can dynamically find them for complex multi-step workflows. By solving the discoverability gap in Agent-to-Agent protocols, it enables autonomous agents to locate, authenticate, and compensate one another across organizational boundaries.

Three Pillars

Why This Becomes Necessary

Current A2A protocols lack a decentralized discoverability layer, forcing orchestrators to rely on hard-coded agent lists that break as ecosystems grow and agents specialize.

What a Solution Must Provide

On-chain capability registration, standardized AgentCard schemas, role-to-action binding, cross-boundary authentication, and micropayment integration so discovered agents can be hired atomically.

Regulatory & Standards Angle

EU AI Act Article 52 requires that users are informed when they interact with an AI system; a public capability directory makes agent roles and affordances transparent and machine-verifiable by design.

Related Primitives

Parent Hub

identityregistry.org

Foundational identity and trust registry for AI agents

capabilityregistry.org

Institutional registry standards for agent capabilities

reputationregistry.org

Reputation registry infrastructure for agent trust signals

agentreputation.org

Agent-centric reputation models and scoring primitives

Relevant: EU AI Act Article 52 - Article 52 transparency obligations require AI systems to disclose their nature and capabilities; a standardized capability directory operationalizes this requirement at the infrastructure level. Source

Research: Towards Multi-Agent Economies: Enhancing the A2A Protocol with Ledger-Anchored Identities and x402 Micropayments for AI Agents — Vaziry, Rodriguez Garzon, Küpper

“This research article presents a novel architecture to empower multi-agent economies by addressing two critical limitations of the emerging Agent2Agent (A2A) communication protocol: decentralized agent discoverability and agent-to-agent micropayments.”

Read paper →