{"uid":"cap_k2_STKZ4UamkxMRlQOk_f","slug":"evm-block-number-lookup-33bdf496","name":"EVM Block Number Lookup","description":"Global current weather, hourly forecasts, foreign-exchange rates, EVM reads, and deterministic utilities for AI agents. Pay per call with MPP or x402; no API key.","url":"https://built-with-productos-xszv.vercel.app/v1/block-number?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"network":{"enum":["ethereum","base","arbitrum","polygon"],"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"hex":"0x20f85d2","network":"base","block_number":34567890}},"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_rmhGs5rKC3oOBau3lnTyC","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 EVM-compatible blockchain network (Ethereum, Base, Arbitrum, or Polygon)","exampleAgentPrompt":"What is the current block number on Base right now?","exampleUseCases":[{"title":"Monitor Ethereum block progression","prompt":"Keep checking the current block number on Ethereum every minute and let me know when it crosses block 21000000."},{"title":"Confirm Base chain liveness","prompt":"Can you quickly grab the latest block number on Base to confirm the chain is still producing blocks?"},{"title":"Arbitrum block height for timestamp estimation","prompt":"What's the current block number on Arbitrum? I need it to estimate when a transaction from about 100 blocks ago was confirmed."}],"resultDescription":"A JSON object containing the current block number as both a hex string and a decimal integer, along with the queried network name. Example: {\"hex\": \"0x20f85d2\", \"network\": \"base\", \"block_number\": 34567890}","failureModes":["Invalid or unsupported network name returns an error — only 'ethereum', 'base', 'arbitrum', 'polygon' are accepted","Payment not provided or insufficient USDC triggers a 402 Payment Required response","Network RPC unavailability may cause delayed or failed responses","Malformed query parameters result in schema validation errors"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-call EVM block number lookup without setting up API keys or managing rate limits. Ideal for agents that need occasional chain-height checks across Ethereum, Base, Arbitrum, or Polygon without committing to a full Web3 node provider subscription. Best for lightweight monitoring, timestamp estimation, and liveness checks rather than high-frequency indexing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:40:51.410Z","isFirstParty":false,"canonicalSlug":"evm-block-number-lookup-33bdf496"}