{"uid":"cap_IXofWyaujwqw8y1y0KwFS","slug":"evm-address-eip-55-checksum-converter-052f04f0","name":"EVM Address EIP-55 Checksum Converter","description":"Verify an x402 endpoint before paying: live payTo, USDC quote, network, asset, resource binding, TLS and endpoint safety for $0.001 on Base or Solana.","url":"https://agentresolver.vercel.app/api/evm-address-checksum","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$"}}},"responseSchema":{"type":"json","example":{}},"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_ekZLTIQpM9ODUK4hzR_cu","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":"Converts a raw EVM address to its EIP-55 checksummed form and returns both lowercase and checksummed variants","exampleAgentPrompt":"Can you convert this Ethereum address to its EIP-55 checksummed format: 0xd8da6bf26964af9d7eed9e03e53415d37aa96045?","exampleUseCases":[{"title":"Normalize address before smart contract call","prompt":"I need to checksum this wallet address before passing it to a smart contract — can you convert 0xab5801a7d398351b8be11c439e05c5b3259aec9b to EIP-55 format?"},{"title":"Validate and format user-submitted address","prompt":"A user submitted this Ethereum address in all lowercase: 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae — can you give me the proper mixed-case checksummed version?"},{"title":"Prepare address for wallet display","prompt":"I want to display an Ethereum address correctly in my app. Can you checksum 0x5aaeb6053f3e94c9b9a09f33669435e7ef1beaed and give me both the checksummed and lowercase forms?"}],"resultDescription":"Returns an object containing the original input address, the EIP-55 checksummed address with mixed-case hex characters, and the fully lowercase version, along with a boolean confirming EIP-55 compliance.","failureModes":["Invalid or malformed address string returns an error — address must be a valid 42-character hex string starting with 0x","Non-EVM addresses (e.g. Bitcoin, Solana) are not supported and will be rejected","Missing required 'address' field in request body causes a validation error","Payment failure or insufficient USDC balance prevents execution (x402 payment required)"],"whenToPreferThis":"Use this endpoint when you need a fast, deterministic EIP-55 checksum conversion for a single Ethereum/EVM address, especially in agentic pipelines where you need a structured response with both checksummed and lowercase variants. Prefer this over rolling your own checksum logic when you want a reliable, API-based transformation with a clear schema.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-18T12:32:25.546Z","isFirstParty":false}