{"uid":"cap_jExOP4eKhsQ1XMMfnTlNf","slug":"base-mainnet-current-block-number-27d6408e","name":"Base Mainnet Current Block Number","description":"Current Base mainnet block number.","url":"https://x402-data-api.sigrunner.workers.dev/chain/block-number","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"chain":"base","block_number":27738421}},"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_-EiItgbZ2HHI4itFlD7Im","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 on the Base mainnet blockchain.","exampleAgentPrompt":"What's the current block number on Base mainnet right now?","exampleUseCases":null,"resultDescription":"Returns the current block number (chain height) of the Base mainnet as an integer, reflecting the latest confirmed block at time of request.","failureModes":["RPC node unavailable — returns 5xx error","Rate limit exceeded — returns 429 with retry-after header","Payment not provided or invalid — returns 402 requiring x402 payment","Network timeout if Base node is syncing"],"whenToPreferThis":"Use this endpoint when you need the current Base mainnet block number for timing, confirmation depth checks, or synchronizing on-chain events. Prefer this over general Ethereum block number APIs when working specifically on the Base L2 network.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:44:16.257Z","isFirstParty":false}