{"uid":"cap_R02ZoS-wgovDko2GwZ4uo","slug":"evm-address-check-d598c445","name":"EVM Address Check","description":"EVM address checksum and validation — check an Ethereum/Base address format before sending funds.","url":"https://conclavex402p04.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_WZzdphKu8kXRFwWQLKugb","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 or EVM-compatible address, returning EIP-55 checksum status and lowercase form","exampleAgentPrompt":"Before I send those funds, can you check if 0x2f2e1f54109b2525137eeda4a892600ee956d42a is a valid EVM address and whether it passes EIP-55 checksum?","exampleUseCases":[{"title":"Pre-transfer address safety check","prompt":"I'm about to send 500 USDC to 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B — can you verify that address is properly formatted and EIP-55 checksummed before I proceed?"},{"title":"User input validation in wallet app","prompt":"A user just entered 0x742d35Cc6634C0532925a3b844Bc454e4438f44e as their withdrawal address — is it a valid EVM address format and does it pass the checksum?"},{"title":"Bulk address audit in agent pipeline","prompt":"We collected a list of Base wallet addresses from our users and I need to verify each one — start with 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe and tell me if it's valid and EIP-55 verifiable."}],"resultDescription":"Returns a JSON object with three fields: 'lowercase' (the address normalized to lowercase hex), 'valid_format' (boolean indicating whether the address matches the expected 0x + 40 hex chars format), and 'eip55_verifiable' (boolean indicating whether the address passes EIP-55 mixed-case checksum verification).","failureModes":["Missing or malformed address input returns a validation error","Non-hex or non-0x-prefixed strings may return valid_format: false","Addresses with correct length but invalid hex characters will fail format check","Network or server errors on pythonanywhere.com may return 5xx responses"],"whenToPreferThis":"Use this endpoint when you need a fast, lightweight on-the-fly check of an Ethereum, Base, or any EVM-compatible wallet address before executing a transaction or storing the address. Prefer it over manual regex checks when you also need EIP-55 checksum validation in addition to basic format verification. Particularly valuable in agent pipelines that handle user-supplied wallet addresses where input errors could result in lost funds.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:42:01.582Z","isFirstParty":false,"canonicalSlug":"evm-address-check-d598c445"}