{"uid":"cap_je9i0KfyLlApNiF8RX3mF","slug":"evm-address-check-25b7819c","name":"EVM Address Check","description":"EVM address checksum and validation — check an Ethereum/Base address format before sending funds.","url":"https://conclavex402.pythonanywhere.com/u/address-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object"},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"pathParams":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","additionalProperties":{"type":"string"}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"lowercase":"0x2f2e1f54109b2525137eeda4a892600ee956d42a","valid_format":true,"eip55_verifiable":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_2C3qBm1R5QYKLA9qryjyk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates and checksums an Ethereum/EVM address format, returning EIP-55 checksum status and lowercase form.","exampleAgentPrompt":"Before I send funds, can you validate this Ethereum address and check if it passes EIP-55 checksum: 0x2f2E1F54109B2525137EEda4a892600ee956D42A?","exampleUseCases":[{"title":"Pre-transfer address validation","prompt":"I'm about to send 2 ETH to 0x2f2e1f54109b2525137eeda4a892600ee956d42a — can you verify this address is correctly formatted and tell me if the EIP-55 checksum checks out before I confirm?"},{"title":"DeFi smart contract input check","prompt":"We're about to call a DeFi contract with a user-supplied wallet address 0xAbCdEf1234567890abcdef1234567890AbCdEf12 — can you validate the format and checksum before we pass it through?"},{"title":"User-submitted address sanity check","prompt":"A user just entered 0xDEADBEEFdeadbeefDEADBEEFdeadbeefDEADBEEF as their withdrawal address — run a quick EVM address format and EIP-55 checksum check so I know it's safe to proceed."}],"resultDescription":"Returns a JSON object with three fields: 'lowercase' (the address normalized to lowercase hex), 'valid_format' (boolean indicating whether the address matches EVM address format), and 'eip55_verifiable' (boolean indicating whether the EIP-55 mixed-case checksum is valid).","failureModes":["Malformed or missing address input returns an error or false valid_format","Non-hex strings that don't resemble addresses may return valid_format: false","Addresses with wrong length (not 20 bytes / 42 chars with 0x) will fail validation","Payment failure or x402 protocol error prevents the call from executing"],"whenToPreferThis":"Use this endpoint when you need a lightweight, pay-per-call EVM address validator with EIP-55 checksum verification before executing a blockchain transaction or storing a wallet address. Prefer this over client-side validation when you need a trusted, server-side check, or when operating in an agent pipeline without access to an Ethereum library. Especially useful for pre-flight checks before sending funds on Ethereum, Base, or other EVM-compatible chains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:44:58.423Z","isFirstParty":false,"canonicalSlug":"evm-address-check-25b7819c"}