{"uid":"cap_v1dAF-CRY84hWeUg67Dri","slug":"x402-trust-discovery-api-ens-basename-onchain-name-resolution-8393565d","name":"x402 Trust & Discovery API — ENS / Basename Onchain Name Resolution","description":"Independent pre-purchase safety and reputation checks for x402 and MPP endpoints, plus keyless onchain data on Base. Accepts BOTH EIP-3009 and Circle Gateway credentials — only 141 of 788 Base-payable resources do, and a single-credential buyer is locked out of 53.8% of this market on one rail or 28.3% on the other. GET /v1/guard?url=&credential= answers whether the credential you carry can pay a given endpoint at all, before you try. Searching this market for \"is this API endpoint a scam\" returns registries and explorers but no dedicated service; that gap is what /v1/guard fills, inspecting an endpoint WITHOUT paying it and returning a go / test-with-minimum / do-not-pay verdict backed by onchain settlement history.","url":"https://gkyf2bs3b4p35hwwg5zzsnejeu.srv.us/v1/onchain/name?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"name":{"type":"string","description":"ENS name or Basename to resolve, e.g. vitalik.eth or jesse.base.eth."},"address":{"type":"string","description":"Address to reverse-resolve to a primary name."}}},"responseSchema":{"type":"json","example":{}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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_NPVohQn477sWG_VISt7j-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Resolves ENS names and Basenames to addresses (or reverse-resolves addresses to primary names) on Base, without requiring payment credentials","exampleAgentPrompt":"What's the wallet address for jesse.base.eth? Just resolve it for me using the onchain name lookup.","exampleUseCases":[{"title":"Resolve Basename to wallet address","prompt":"Can you look up the wallet address for jesse.base.eth on Base? I need the actual 0x address it points to."},{"title":"Reverse resolve address to primary name","prompt":"I have the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — can you check if it has a primary ENS name or Basename associated with it?"},{"title":"Verify ENS name before sending funds","prompt":"Before I send crypto, can you confirm what address vitalik.eth resolves to on Base so I know I have the right destination?"}],"resultDescription":"A JSON object containing the resolved wallet address for a given ENS name or Basename, or the primary name associated with a given address. Returns onchain name record data sourced from Base without requiring any payment credentials.","failureModes":["Name not found or not registered — returns empty or null result","Address has no primary name set — reverse resolution returns null","Invalid or malformed ENS/Basename input — may return error or empty","Network unavailability on Base — service returns 5xx error","Name exists but points to no address (misconfigured record) — returns null address"],"whenToPreferThis":"Use this endpoint when you need keyless, no-payment-required resolution of ENS names or Basenames on Base. Ideal for agents that need to resolve human-readable Web3 identities to addresses (or vice versa) as a prerequisite step before payment or interaction, without needing EIP-3009 or Circle Gateway credentials.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T02:28:15.209Z","isFirstParty":false,"canonicalSlug":"x402-trust-discovery-api-ens-basename-onchain-name-resolution-8393565d"}