{"uid":"cap_NhJUHoEvdeAhyRgZDbGL4","slug":"quicknode-aeb4d9bb","name":"QuickNode JSON-RPC Proxy — Optimism Mainnet","description":"JSON-RPC proxy — optimism-mainnet","url":"https://x402.quicknode.com/optimism-mainnet/","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_7dTHzGTmDtI4rkVxAwnlg","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 2.0 calls to the Optimism (OP) mainnet blockchain, enabling on-chain reads and writes via standard Ethereum JSON-RPC methods.","exampleAgentPrompt":"Can you call eth_getBalance on Optimism mainnet for address 0xAbCd1234... using the QuickNode RPC proxy and tell me the current balance?","exampleUseCases":[{"title":"Monitor user wallet balances on Optimism","prompt":"Check the current ETH balance for our users' wallets on Optimism mainnet and flag any that have dropped below 0.1 ETH so we can send them a reminder to top up."},{"title":"Track smart contract state changes","prompt":"Call our reward contract on Optimism to get the latest total staked amount and claimable rewards for a user, then compare it to what we had cached yesterday to see if anything changed."},{"title":"Broadcast and verify transactions","prompt":"Send a raw transaction to swap tokens on Optimism mainnet, then poll the network every few seconds until you get a transaction receipt confirming it went through."}],"resultDescription":"Returns a standard JSON-RPC 2.0 response object containing the result of the requested method (e.g. block number, balance in hex wei, transaction receipt, contract call output) or a JSON-RPC 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 failure (insufficient USDC) results in 402 Payment Required before execution","Network congestion or node unavailability returns 503 or timeout","Calling a non-existent contract address returns empty result rather than error"],"whenToPreferThis":"Use this endpoint when you need to interact with the Optimism (OP) mainnet specifically — reading on-chain state, calling smart contracts, broadcasting transactions, or fetching blocks/receipts — and want a reliable, pay-per-call QuickNode RPC node without managing your own infrastructure. Prefer this over Ethereum mainnet endpoints when your target contracts or tokens are deployed on the Optimism L2 network.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:41:56.145Z","isFirstParty":false}