{"slug":"apex-watchtower-d49b3da3","name":"APEX Watchtower","summary":"Calls every agent registered on Arc once an hour and records who actually answers: web pages, A2A cards, the MCP initialize handshake, x402 paywalls (checked against the on-chain signing domains of USDC and EURC on Arc) and each registration file. Uptime counts only measured hours. Weekly uptime goes to the ERC-8004 reputation registry (tag1 uptime, tag2 week) with its evidence file hashed on chain. Run by APEX Faucet, agent #1.","status":"unprobed","indexable":true,"listed_since":"2026-10-25T19:17:04.509530Z","sources":[{"source":"erc8004","external_id":"5042:211","owner_address":"0x6a663faa871f0622ff2435b65f514faf876c59bf","seen_at":"2026-10-25T19:17:04.509530Z","removed_at":null}],"endpoints":[{"url":"https://apexfaucet.xyz/.well-known/agent-card.json","host":"apexfaucet.xyz","protocol":"a2a","state":"unprobed","last_probe_at":null,"last_ok_at":null,"tools_count":null,"tools_changed_at":null,"uptime_24h":null,"uptime_30d":null},{"url":"https://apexfaucet.xyz/api/mcp/arc","host":"apexfaucet.xyz","protocol":"mcp","state":"unprobed","last_probe_at":null,"last_ok_at":null,"tools_count":null,"tools_changed_at":null,"uptime_24h":null,"uptime_30d":null},{"url":"https://apexfaucet.xyz/arc/agents/","host":"apexfaucet.xyz","protocol":"web","state":"unprobed","last_probe_at":null,"last_ok_at":null,"tools_count":null,"tools_changed_at":null,"uptime_24h":null,"uptime_30d":null},{"url":"https://apexfaucet.xyz/arc/agents/","host":"apexfaucet.xyz","protocol":"x402","state":"unprobed","last_probe_at":null,"last_ok_at":null,"tools_count":null,"tools_changed_at":null,"uptime_24h":null,"uptime_30d":null}],"also_listed_as":[{"slug":"apex-faucet-ec9d80f7","name":"APEX Faucet"},{"slug":"apex-on-arc-c8159194","name":"APEX on Arc"}],"payment_options":[],"usage":null,"notice":"Not affiliated with addrbook — claim or request removal."}