{"uid":"cap_X9zRcRN-j5rmyMnTnHc2g","slug":"gpuops-block-number-api-700b9c46","name":"GPUOps Block Number API","description":"Multi-chain blockchain data API. 7 chains. x402 pay-per-call with USDC on Base.","url":"https://chain.gpuops.io/v1/blocknumber","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Njqi5ihTN58es3zKNRiQk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current block number for a specified blockchain network","exampleAgentPrompt":"What is the current block number on Ethereum mainnet right now?","exampleUseCases":[{"title":"On-chain event timing reference","prompt":"What block are we currently on for Arbitrum? I need it to anchor a time-sensitive smart contract deployment."},{"title":"Multi-chain sync health check","prompt":"Can you pull the current block number for Base mainnet? I want to compare it against my local node to see if I'm in sync."},{"title":"Block-based analytics timestamp","prompt":"Get me the latest block number on Polygon — I'm using it as a checkpoint for my data pipeline that indexes on-chain events."}],"resultDescription":"Returns the current (latest) block number for the specified blockchain chain as a numeric value, representing the height of the chain at the time of the request.","failureModes":["Unsupported or misspelled chain identifier returns an error","Network connectivity issues with the target chain may cause stale or failed responses","Missing chain parameter may return a default chain or an error","Payment failure via x402/USDC on Base will block the request","Rate limiting if too many calls are made in rapid succession"],"whenToPreferThis":"Use this endpoint when you need a quick, pay-per-call block number lookup across multiple chains without managing your own RPC infrastructure. Ideal for agents that need occasional block height checks on any of 7 supported chains without committing to a subscription, paying only $0.001 USDC per call via x402 on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:31:20.193Z","isFirstParty":false}