{"uid":"cap_Du123IBDbqV5vCKuwMLgO","slug":"8k4-protocol-cross-chain-identity-registration-lookup-38e4d0d9","name":"8k4 Protocol — Cross-Chain Identity Registration Lookup","description":"Get cross-chain registrations for a canonical global ID","url":"https://api.8k4protocol.com/identity/%7Bglobal_id%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":[{"chain":"base","wallet":"0x...","agent_id":21480,"global_id":"eip155:8453:0x8004...:21480","created_at":"2026-01-01T00:00:00+00:00"}]},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mZuoG3hMnQNqgDf660zoL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns all cross-chain wallet registrations associated with a given canonical ERC-8004 global agent ID","exampleAgentPrompt":"Can you look up all the cross-chain registrations for the agent with global ID eip155:8453:0x8004...:21480 on the 8k4 Protocol trust system, so I can see which chains and wallets it's registered under?","exampleUseCases":null,"resultDescription":"A JSON array of registration objects, each containing the chain name, wallet address, numeric agent_id, full global_id string, and ISO 8601 creation timestamp — one entry per registered chain for the given canonical agent identity.","failureModes":["global_id not found — returns empty array or 404","malformed global_id format — returns 400 bad request","payment not attached or insufficient — returns 402 payment required","rate limit exceeded — returns 429 too many requests","agent has no cross-chain registrations — returns empty array"],"whenToPreferThis":"Use this endpoint when you need to enumerate all blockchain/chain registrations for a known ERC-8004 canonical global ID. Prefer this over the wallet-based resolve endpoint when you already have the canonical global_id and want the full set of cross-chain records rather than resolving by wallet address.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:54:35.837Z","isFirstParty":false}