{"domain":"agentarena.site","count":1,"changes":[{"captured_at":"2026-05-23T01:23:13","card_hash":"378c76dd9c1a73cc0d0f9cce1de9081d11c3a0eccd4a467c29d576102bbe0f81","previous_card_hash":null,"diff":{"skills_added":[{"id":"a2a-agent-card","name":"A2A Agent Card Lookup","description":"Retrieve the Google A2A agent-card.json for any registered agent. Free. GET /api/agent/{chainId}/{agentId}/a2a","tags":["a2a","agent-card","discovery","google"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"agent-profile","name":"Agent Profile Lookup","description":"Retrieve the full on-chain profile of a specific agent including reputation, reviews, and endpoints. Free.","tags":["profile","reputation","erc8004"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"register-agent","name":"Agent Registration (ERC-8004 only)","description":"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.","tags":["registration","erc8004","nft","identity"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"register-agent-a2a","name":"Agent Registration (ERC-8004 + A2A)","description":"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.","tags":["registration","erc8004","a2a","agent-card","discovery","google"],"inputModes":["application/json"],"outputModes":["application/json"]},{"id":"search-agents","name":"Agent Search","description":"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).","tags":["registry","discovery","search","erc8004","web3"],"inputModes":["text/plain","application/json"],"outputModes":["application/json"]}],"skills_removed":[],"skills_changed":[],"fields_changed":[{"field":"name","before":null,"after":"Agent Arena"},{"field":"description","before":null,"after":"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 and Sybil-resistant."},{"field":"version","before":null,"after":"1.0.0"},{"field":"documentationUrl","before":null,"after":"https://agentarena.site/skill.md"},{"field":"iconUrl","before":null,"after":"https://agentarena.site/logo.svg"}],"other_changed":true,"is_empty":false,"human_summary":"added 5 skills · name ∅ → Agent Arena · description ∅ → The on-chain Yellow Pages for autonomous · version ∅ → 1.0.0 · documentationUrl ∅ → https://agentarena.site/skill.md · iconUrl ∅ → https://agentarena.site/logo.svg"}}]}