{"uid":"cap_cyW2PjyWUgQR9eOgCRxsx","slug":"agent-rest-stop-eip-55-address-checksum-4009ceea","name":"Agent Rest Stop – EIP-55 Address Checksum","description":"EIP-55 checksum plus a short chain-id list.","url":"https://agent-gas-station.agent-gas-station.workers.dev/v1/Checksum?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string"},"chain_id":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_0UWDZC6PkB_tiqWnzxhN-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the EIP-55 checksummed version of an Ethereum address along with a short list of supported chain IDs","exampleAgentPrompt":"Can you checksum this Ethereum address for me — 0xd8da6bf26964af9d7eed9e03e53415d37aa96045 — on chain ID 1?","exampleUseCases":[{"title":"Normalize wallet address before transfer","prompt":"Before I send funds, can you convert 0xd8da6bf26964af9d7eed9e03e53415d37aa96045 to its proper EIP-55 checksummed format on chain 1 so I don't risk sending to a wrong address?"},{"title":"Verify address casing in smart contract input","prompt":"I need to make sure this address is properly checksummed before I paste it into a contract call — can you run 0xab5801a7d398351b8be11c439e05c5b3259aec9b through the EIP-55 checksum on chain 137?"},{"title":"Display-ready address formatting for a DApp UI","prompt":"My DApp needs to show user wallet addresses in EIP-55 format. Can you checksum 0x4e83362442b8d1bec281594cEa3050c8EB01311C for chain ID 10 so I can render it correctly?"}],"resultDescription":"Returns the EIP-55 mixed-case checksummed representation of the submitted address, plus a short list of chain IDs that the service supports, enabling the caller to confirm address formatting correctness and understand chain compatibility.","failureModes":["Invalid hex address format — returns error if the input is not a valid 40-character hex string","Unsupported chain ID — may return an error or ignore chain-specific nuances if the chain_id is not in the supported list","Missing address field — request fails validation if address is omitted","Malformed input object — non-string values cause schema validation errors"],"whenToPreferThis":"Use this endpoint when you need a quick, cheap ($0.01 USDC) on-demand EIP-55 checksum conversion without standing up your own Web3 library. Particularly useful in agent pipelines that handle user-supplied wallet addresses and need to normalize them before display, storage, or on-chain use. Prefer this over a full Web3 node call when you only need address formatting, not broader blockchain interaction.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:39:52.808Z","isFirstParty":false,"canonicalSlug":"agent-rest-stop-eip-55-address-checksum-4009ceea"}