{"uid":"cap_Pzshxdy3kpA1OIlYimZMg","slug":"api-web3identity-com-276b95b7","name":"ENS Reverse Resolution – api.web3identity.com","description":"Reverse resolve address to ENS name","url":"https://api.web3identity.com/api/reverse/0x00000000219ab540356cBB839Cbe05303d7705Fa","method":"POST","headers":{},"bodySchema":{"type":"object","required":["name"],"properties":{"name":{"type":"string","example":"vitalik.eth","description":"ENS name"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"unknown","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__Ivlqz9ZquEp-e05mW3it","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Reverse resolves an Ethereum address to its ENS (Ethereum Name Service) human-readable name","exampleAgentPrompt":"What is the ENS name for the Ethereum address 0x00000000219ab540356cBB839Cbe05303d7705Fa?","exampleUseCases":null,"resultDescription":"Returns the ENS .eth human-readable name (e.g. 'vitalik.eth') that is set as the reverse record for the given Ethereum address, or null/empty if no reverse record is configured.","failureModes":["Address has no reverse ENS record set — returns null or empty string","Invalid Ethereum address format — returns 400 or error response","Address checksum mismatch — may return error or no result","ENS resolver unavailable — service timeout or 503","Payment failure — x402 payment not accepted, returns 402"],"whenToPreferThis":"Use this endpoint when you have a raw Ethereum wallet address and need to display or identify it by its human-readable ENS name. Prefer this over on-chain direct calls when you need a fast, paid API lookup without running your own Ethereum node. Ideal for enriching address data in user interfaces, transaction history displays, or identity resolution pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:31:51.969Z","isFirstParty":false}