{"uid":"cap_rLUdDKe8efn5ZJWG79qGn","slug":"aurenic-eip-55-ethereum-address-checksum-validator-c401e27d","name":"Aurenic EIP-55 Ethereum Address Checksum Validator","description":"EIP-55 checksum validation for an Ethereum address","url":"https://api.aurenic.org/eth-validate/:address?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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":"unknown","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_z99Me0nYVAubMJVJyPDcD","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":"Validates whether an Ethereum address conforms to the EIP-55 mixed-case checksum encoding standard","exampleAgentPrompt":"Can you check whether 0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed is a valid EIP-55 checksummed Ethereum address?","exampleUseCases":[{"title":"Pre-transfer address safety check","prompt":"Before I send ETH to 0xfB6916095ca1df60bB79Ce92cE3Ea74c37c5d359, can you verify that address passes EIP-55 checksum validation so I know it wasn't corrupted or mistyped?"},{"title":"Smart contract input sanitization","prompt":"I'm about to submit 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe as a recipient address in a contract call — can you confirm it's a properly checksummed Ethereum address?"},{"title":"Wallet address format QA in a dApp","prompt":"Our dApp collects user wallet addresses from a form — can you validate that 0xCA35b7d915458EF540aDe6068dFe2F44E8fa733c has a correct EIP-55 checksum before we store it?"}],"resultDescription":"Returns whether the provided Ethereum address passes EIP-55 checksum validation — indicating if the mixed-case encoding of the hex characters is cryptographically correct per the standard, helping detect corrupted or incorrectly formatted addresses.","failureModes":["Address missing 0x prefix — may return invalid or error","Non-hex characters in address body — validation error","Address wrong length (not 42 characters) — rejected","All-lowercase or all-uppercase address — fails EIP-55 checksum even if the address itself is real","Network or service unavailability — HTTP 5xx response","Payment failure — HTTP 402 if USDC payment is not provided"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call EIP-55 checksum verification for Ethereum addresses without spinning up a full Web3 library or node connection. Ideal for serverless agents, form validation pipelines, or pre-transaction safety checks where you want a fast, cheap external oracle to confirm address integrity. Prefer over local library calls when you want a stateless microservice approach or when running in environments where Web3 dependencies are unavailable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:47:37.572Z","isFirstParty":false,"canonicalSlug":"aurenic-eip-55-ethereum-address-checksum-validator-c401e27d"}