{"uid":"cap_2ZYDC5ED75d0ea07CDK9j","slug":"quantaflow-x402-etherscan-api-gateway-74f9d88d","name":"QuantaFlow x402 Etherscan API Gateway","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/etherscan?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"body":{"type":"string","description":"Optional JSON body forwarded to POST requests."},"path":{"type":"string","description":"Path below the selected upstream origin."},"query":{"type":"object"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"description":"The upstream response body and content type are passed through after successful payment."},"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_-4PGtRgEdLLl715QzV7vy","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":"Proxies requests to the Etherscan API via an x402 micropayment-gated gateway for blockchain data lookups","exampleAgentPrompt":"Can you pull the transaction history for Ethereum wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B from Etherscan — I want to see all outgoing ETH transfers in the last 100 transactions.","exampleUseCases":[{"title":"Check wallet ETH balance on-chain","prompt":"What's the current ETH balance for wallet address 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe on Ethereum mainnet?"},{"title":"Fetch ERC-20 token transfers for address","prompt":"Pull all USDC token transfer events for the address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e from Etherscan so I can audit recent inflows and outflows."},{"title":"Look up smart contract ABI","prompt":"Get the ABI for the Uniswap V2 router smart contract at 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D from Etherscan so I can decode its function calls."}],"resultDescription":"The raw upstream Etherscan API response is passed through after the x402 micropayment is processed — typically JSON containing blockchain data such as account balances, transaction lists, token transfers, contract ABIs, gas estimates, or block details depending on the queried path.","failureModes":["Payment failure: insufficient USDC balance causes 402 Payment Required response","Invalid Etherscan path: malformed path parameter returns upstream 400 or 404 error","Rate limit exceeded: Etherscan upstream rate limiting causes 429 responses","Invalid address format: passing a malformed Ethereum address returns Etherscan error response","Network issues: upstream Etherscan API unavailability causes timeout or 5xx errors"],"whenToPreferThis":"Use this endpoint when you need Etherscan blockchain data and want to pay per-call via x402 micropayments without managing a traditional Etherscan API key subscription. Ideal for agents that need on-demand, low-volume Ethereum data lookups in a web3-native payment context.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T18:42:58.514Z","isFirstParty":false,"canonicalSlug":"quantaflow-x402-etherscan-api-gateway-74f9d88d"}