{"uid":"cap_JiIHlWt1bjsUtSHWiTIg1","slug":"signalharness-address-checksum-08803642","name":"SignalHarness Address Checksum","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/address_checksum/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address_checksum_request":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Checksum normalization does not prove ownership or contract identity."],"service_id":"address_checksum","evidence_scope":"caller_supplied_data","checksummed_address":"{\"address\":\"0x0000000000000000000000000000000000000001\"}"},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"address_checksum","executionId":"example-execution","startedAtMs":0,"amountAtomic":"5000","resultSha256":"06bd30b59a10c7002c04b6cd85eb68b782ba7e432fa3224547e7f818f7937fbf","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"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_Ua7is3kbSK0PwT93fEYYH","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":"Converts an Ethereum-style address to its EIP-55 checksummed form and returns any associated warnings","exampleAgentPrompt":"Can you checksum this Ethereum address for me: 0xd8da6bf26964af9d7eed9e03e53415d37aa96045? I need the properly capitalized EIP-55 version.","exampleUseCases":[{"title":"Normalize address before on-chain transfer","prompt":"Before I send funds, can you convert this address to its proper checksummed form: 0xab5801a7d398351b8be11c439e05c5b3259aec9b?"},{"title":"Validate wallet address in user onboarding","prompt":"A user just submitted this wallet address during signup — 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae — can you checksum it and tell me if there are any warnings?"},{"title":"Sanitize address from external data source","prompt":"I pulled this address from a CSV file and I'm not sure if the casing is correct: 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2 — can you run it through the EIP-55 checksum and give me the properly formatted version?"}],"resultDescription":"Returns the EIP-55 checksummed version of the submitted Ethereum address, along with any warnings about the input, an evidence scope field indicating the data source, and a service ID. Also includes a full execution receipt with payment details, latency, and a SHA-256 hash of the result.","failureModes":["Invalid or unparseable address string returns an error or warnings in the result","Address string too short (under 2 characters) or exceeds 65536 characters will be rejected by schema validation","Non-hex or malformed address may produce warnings rather than a hard failure","Network or payment failures may result in a non-succeeded status in the receipt"],"whenToPreferThis":"Choose this endpoint when you need a simple, fast, paid-per-call API to normalize Ethereum addresses to EIP-55 mixed-case checksum format, especially within agent workflows that already use x402 micropayments on Base. It is purpose-built for blockchain address normalization and returns structured output with a receipt, making it suitable for audit trails in agent pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T13:00:09.407Z","isFirstParty":false}