{"uid":"cap_i7rIJVVQQGf2x5ccPvRJ4","slug":"quantaflow-x402-api-gateway-alchemy-eth-mainnet-f2014678","name":"QuantaFlow x402 API Gateway — Alchemy ETH Mainnet","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/alchemy-eth-mainnet?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_YLICTpdZ897dSwU8H66fX","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 Alchemy Ethereum Mainnet API via x402 micropayment protocol, charging $0.01 USDC per call","exampleAgentPrompt":"Can you look up the current ETH balance for address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on the Ethereum mainnet using the Alchemy gateway?","exampleUseCases":[{"title":"Check Ethereum wallet balance on-chain","prompt":"What is the current ETH balance for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum mainnet?"},{"title":"Fetch latest Ethereum block info","prompt":"Get the details for the latest block on Ethereum mainnet — I need the block number, timestamp, and transaction count."},{"title":"Query ERC-20 token holdings for address","prompt":"Can you pull all ERC-20 token balances for address 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B on Ethereum mainnet using the Alchemy API?"}],"resultDescription":"The raw upstream Alchemy Ethereum Mainnet API response body (JSON RPC result), passed through after successful x402 micropayment, including blockchain data such as balances, block details, transaction receipts, or smart contract query results.","failureModes":["Payment failure: insufficient USDC balance or x402 protocol error results in 402 Payment Required","Invalid path: unrecognized Alchemy API path returns upstream 404 or error","Malformed JSON body: invalid RPC payload causes Alchemy upstream error","Rate limiting: excessive calls may trigger upstream Alchemy rate limits","Network error: Vercel or Alchemy infrastructure unavailability returns 5xx"],"whenToPreferThis":"Choose this endpoint when you need pay-per-call access to the Alchemy Ethereum Mainnet API without committing to a subscription, especially in agent workflows that make sporadic or low-volume blockchain queries and benefit from x402 micropayment automation. Prefer this over direct Alchemy API keys when operating in a web3-native, crypto-payment environment.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:41:44.800Z","isFirstParty":false,"canonicalSlug":"quantaflow-x402-api-gateway-alchemy-eth-mainnet-f2014678"}