{"uid":"cap_eT3U2QMjmUR8l5WFs3eYj","slug":"quantaflow-x402-gateway-infura-arbitrum-mainnet-proxy-4c331357","name":"QuantaFlow x402 Gateway – Infura Arbitrum Mainnet Proxy","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/infura-arbitrum-mainnet","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_12ETaVFp7tfx1RcCLXRWB","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 JSON-RPC and REST calls to Infura's Arbitrum Mainnet node endpoint via the x402 micropayment protocol, charging $0.01 USDC per request.","exampleAgentPrompt":"Check the current ETH balance of wallet 0xAbC...123 on Arbitrum mainnet using the Infura node — forward an eth_getBalance call to the latest block.","exampleUseCases":[{"title":"Check Arbitrum wallet balance","prompt":"What's the ETH balance of 0xAbC...123 on Arbitrum mainnet right now? Use eth_getBalance against the latest block."},{"title":"Fetch latest Arbitrum block number","prompt":"Get me the current block number on Arbitrum mainnet — run eth_blockNumber against the Infura Arbitrum node."},{"title":"Query DeFi smart contract state","prompt":"Call the balanceOf function on the USDC contract at 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48 for my address 0xDef...456 on Arbitrum mainnet."}],"resultDescription":"The raw upstream response body from Infura's Arbitrum Mainnet node, passed through transparently after successful x402 micropayment. Typically a JSON-RPC response containing result fields like block numbers, balances, transaction receipts, or contract return values, along with the upstream content type.","failureModes":["Payment failure: insufficient USDC balance or x402 payment header missing — returns 402 Payment Required","Invalid RPC method or malformed JSON body — upstream returns JSON-RPC error object","Path not found on upstream Infura node — returns 404 or upstream error","Infura rate limit or node unavailability — upstream 429 or 503 propagated through","Network timeout reaching Arbitrum node — request hangs or returns gateway timeout"],"whenToPreferThis":"Choose this endpoint when you need pay-per-call access to Infura's Arbitrum Mainnet node without managing an Infura API key subscription — ideal for low-volume or on-demand blockchain queries where the x402 micropayment model ($0.01/call) is more cost-effective than a monthly plan. Prefer this over direct Infura access when operating in an autonomous agent context that already handles x402 payments.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T19:00:32.392Z","isFirstParty":false}