{"uid":"cap_v9UijbQ_ZxnW3RWhnJcLv","slug":"quantaflow-x402-api-gateway-alchemy-metis-mainnet-9de6f37e","name":"QuantaFlow x402 API Gateway – Alchemy Metis 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-metis-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_005X3lGG6NPMbRR3lgvf1","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 paid API requests to the Alchemy Metis mainnet RPC/data endpoint using the x402 micropayment protocol at $0.01 USDC per call","exampleAgentPrompt":"Query the latest block number on Metis mainnet through Alchemy — forward a eth_blockNumber JSON-RPC call to the root path.","exampleUseCases":[{"title":"Check Metis wallet balance on-chain","prompt":"Fetch the METIS token balance for wallet address 0xAbC123... on Metis mainnet using an eth_getBalance call — I need the current confirmed balance."},{"title":"Read DeFi smart contract state","prompt":"Call the Alchemy Metis mainnet node with an eth_call to read the totalSupply from the Hummus Exchange liquidity pool contract at 0xDEF456... on Metis."},{"title":"Retrieve recent transaction receipt","prompt":"Look up the transaction receipt for tx hash 0x789abc... on Metis mainnet via Alchemy — I need to confirm whether the DeFi swap went through."}],"resultDescription":"The raw upstream response from Alchemy's Metis mainnet node, including the response body and content-type header, passed through transparently after the x402 micropayment of $0.01 USDC is verified and settled.","failureModes":["Payment verification failure: x402 payment header missing or insufficient USDC balance returns 402 Payment Required","Invalid path: unrecognized RPC method or malformed path returns upstream error","Alchemy node error: upstream RPC errors (e.g. invalid params, method not found) passed through as-is","Network timeout: Metis mainnet node unresponsive causes gateway timeout","Malformed JSON body: invalid JSON in body field causes request forwarding failure"],"whenToPreferThis":"Use this endpoint when you need pay-per-call access to Alchemy's Metis mainnet node without committing to a subscription, particularly in agent pipelines where blockchain queries are infrequent or cost must be metered per call using x402 USDC micropayments. Prefer it over direct Alchemy API keys when operating in a trustless, wallet-based payment context.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T18:41:10.348Z","isFirstParty":false,"canonicalSlug":"quantaflow-x402-api-gateway-alchemy-metis-mainnet-9de6f37e"}