{"uid":"cap_Rtli0T1yaftho7yllANTN","slug":"delx-commerce-eip-55-address-checksum-validator-e8fb6a52","name":"Delx Commerce EIP-55 Address Checksum Validator","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/eip55-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string","description":"EVM address (40 hex chars, optional 0x)."}}},"responseSchema":{"type":"json","example":{"valid":true,"schema":"delx/util-eip55-check/v1","expected":"0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5","algorithm":"keccak256","is_checksummed":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SvikjIAYPneSL8pcqiJBt","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether an EVM (Ethereum) address conforms to EIP-55 mixed-case checksum encoding and returns the correctly checksummed form","exampleAgentPrompt":"Can you check whether this Ethereum address is properly EIP-55 checksummed: 0x95222290dd7278aa3ddd389cc1e1d165cc4bafe5?","exampleUseCases":[{"title":"Pre-transfer address sanity check","prompt":"Before I send USDC to 0x95222290dd7278aa3ddd389cc1e1d165cc4bafe5, can you verify it passes EIP-55 checksum validation and give me the correctly cased version?"},{"title":"Smart contract deployment validation","prompt":"I'm about to deploy a contract that references 0xab5801a7d398351b8be11c439e05c5b3259aec9b — is that address properly EIP-55 checksummed or do I need to fix the casing?"},{"title":"Wallet address format normalization","prompt":"A user submitted the address 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae to my dApp — can you tell me if it's a valid EIP-55 checksum and what the correct mixed-case form should be?"}],"resultDescription":"Returns a JSON object indicating whether the submitted address is valid EIP-55 checksummed (valid: true/false), the expected correctly checksummed address string, the algorithm used (keccak256), and a schema identifier confirming the response format.","failureModes":["Invalid or malformed address string (non-hex characters, wrong length) may return valid: false or an error","Missing address field in request body causes validation failure","Address shorter or longer than 40 hex characters may be rejected","Network or payment processing errors from the x402 micropayment layer"],"whenToPreferThis":"Choose this endpoint when an agent needs a lightweight, pay-per-use, no-signup EIP-55 address checksum check with verifiable delivery settled in USDC. Ideal for agents operating in Web3 workflows that need to validate or normalize EVM addresses on-demand without maintaining a subscription or running local keccak256 checksum logic.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:54:02.003Z","isFirstParty":false,"canonicalSlug":"delx-commerce-eip-55-address-checksum-validator-e8fb6a52"}