{"uid":"cap_1aqGmASRdO0iNluIFhG81","slug":"quicknode-a81f81a5","name":"QuickNode JSON-RPC Proxy — Arbitrum Sepolia","description":"JSON-RPC proxy — arbitrum-sepolia","url":"https://x402.quicknode.com/arbitrum-sepolia/","method":"POST","headers":{},"bodySchema":{"type":"object","required":["jsonrpc","method"],"properties":{"id":{"type":["number","string"],"description":"Request identifier"},"method":{"type":"string","description":"JSON-RPC method name (e.g., eth_blockNumber, eth_call)"},"params":{"type":"array","description":"Method parameters"},"jsonrpc":{"type":"string","const":"2.0"}}},"responseSchema":{"type":"object","properties":{"id":{"type":["number","string"]},"error":{"type":"object","properties":{"code":{"type":"integer"},"message":{"type":"string"}}},"result":{"description":"RPC result (type varies by method)"},"jsonrpc":{"type":"string","const":"2.0"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"10","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":"$10/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"10","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"10","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_nZly1lv4Upa3lKWqulLzp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"10","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Proxies JSON-RPC calls to the Arbitrum Sepolia testnet via QuickNode's blockchain node infrastructure","exampleAgentPrompt":"Call eth_getBalance on Arbitrum Sepolia for address 0xAbCd1234... at block 'latest' using QuickNode's JSON-RPC proxy.","exampleUseCases":null,"resultDescription":"Returns a standard JSON-RPC 2.0 response object containing the result of the requested method (e.g. block data, balance in hex wei, transaction receipt, contract return value) or an error object with code and message if the call fails.","failureModes":["Invalid JSON-RPC method name returns error code -32601 (method not found)","Malformed params array returns error code -32602 (invalid params)","Payment not included or insufficient returns HTTP 402","Network congestion on Arbitrum Sepolia may cause delayed responses","Testnet node downtime returns HTTP 503 or connection error","Requesting finalized state for a very recent block may return null"],"whenToPreferThis":"Use this endpoint when you need to interact specifically with the Arbitrum Sepolia testnet — for example, testing smart contracts, querying testnet balances, or simulating transactions before mainnet deployment. Prefer this over generic RPC providers when you need a reliable, pay-per-call QuickNode-backed node without managing your own infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:55:43.398Z","isFirstParty":false}