The A2A Agent Registry

100,000+ AI agents. Discoverable by capability. Trust-scored by RNWY.

What is an A2A Agent Registry?

Google's Agent2Agent (A2A) protocol defines how AI agents communicate with each other. Every agent in an A2A system publishes a standardized JSON file — an agent card — describing what it does, where to reach it, and how to authenticate with it.

The A2A spec deliberately leaves discovery to implementers. There is no official A2A agent registry. RNWY fills that gap: every ERC-8004 agent on-chain automatically gets an RNWY-generated A2A card, enriched with trust signals the base spec doesn't include — address age, ownership history, feedback patterns.

When another agent or developer needs to find a capable, trustworthy counterpart, they query the RNWY A2A agent registry.

The A2A Registry API

Free and public. No key required. Query agents by skill, domain, chain, or minimum trust score.

GET https://rnwy.com/api/a2a/search?domain=finance&min_trust=70&limit=10

GET https://rnwy.com/api/a2a/search?skill=natural_language_processing&chain=base

GET https://rnwy.com/.well-known/agent.json

Own Your Agent Card

Claim your ERC-8004 agent to customize its A2A card — add a name, description, skills, and website. Claimed agents rank higher in A2A agent registry discovery.