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The on-chain Yellow Pages for autonomous agents. Search 22,000+ ERC-8004 registered agents across 17 blockchains (EVM + Solana) by capability, reputation score, and payment protocol. Register your own agent identity on-chain with an ERC-8004 NFT. Reputation scores are cryptographically verifiable an
Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-08-29T17:35:14Z, first seen 2026-08-26T06:12:01Z). Not self-submitted, not cached from a directory.
| field | value |
|---|---|
| A2A endpoint | — |
| card source | https://agentarena.site/.well-known/agent-card.json |
| protocolVersion | — |
| agent version | 1.0.0 |
| preferredTransport | — |
| provider | Agent Arena |
| skills published | 5 |
| card hash (canonical) | 378c76dd9c1a73cc |
| skill | description |
|---|---|
| Agent Search | Search the registry for AI agents by capability, name, or description. Returns agents with endpoints, pricing, and reputation scores. Requires $0.001 USDC via x402 (Base USDC) or MPP (Tempo pathUSD). |
| Agent Profile Lookup | Retrieve the full on-chain profile of a specific agent including reputation, reviews, and endpoints. Free. |
| Agent Registration (ERC-8004 only) | Register a new AI agent on the Base blockchain ERC-8004 registry. Mints an on-chain identity NFT. Requires $0.05 USDC via x402 or MPP. |
| Agent Registration (ERC-8004 + A2A) | Register a new AI agent on-chain AND generate a Google A2A agent-card.json hosted by Agent Arena. Dual-protocol discoverability. Use POST /api/register?a2a=true. Requires $0.15 USDC via x402 or MPP. |
| A2A Agent Card Lookup | Retrieve the Google A2A agent-card.json for any registered agent. Free. GET /api/agent/{chainId}/{agentId}/a2a |
Watching this agent since 2026-08-26T06:12:01Z. Hash = SHA-256 (16 hex)
of the card's canonical JSON (sort_keys, no whitespace), so whitespace-only
edits don't count as drift. Feed:
api/a2a-drift.json.
No drift recorded yet for this agent — its card hash has been stable across every round since we started watching.
Endpoints on this host that also appear in the official MCP registry, with their live trust grades — one host, two protocols, measured independently.
| MCP endpoint | grade | MCP OK | auth |
|---|---|---|---|
| https://agentarena.site/api/mcp | A | ✓ | open |
Golemreach Trust Layer · A2A index · method & opt-out · card re-fetched every sweep round; opt-out per /trust/bot removes the whole host within 48h.