{"uid":"cap_F2dhaIVbPJr2X7Nk52IFw","slug":"pennyrail-block-number-lookup-743e298f","name":"PennyRail Block Number Lookup","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/p/nano/chain.block-number--block-number","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"object"}}},"responseSchema":{"type":"object","additionalProperties":true},"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_oUiNUYfa77JL8zQnruV6c","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 nano/chain via a paid settlement endpoint","exampleAgentPrompt":"What is the current block number on the nano chain right now? Use the PennyRail settlement service to fetch it.","exampleUseCases":[{"title":"Blockchain synchronization status check","prompt":"Can you check what the current block number is on the nano chain so I can verify my node is fully synced?"},{"title":"Smart contract deployment block reference","prompt":"I need to know the current block height on the nano chain before I deploy my contract — can you fetch the latest block number for me?"},{"title":"On-chain event timing verification","prompt":"What block number is the nano chain currently at? I'm trying to confirm whether a transaction I sent has been included yet."}],"resultDescription":"Returns the current block number for the queried chain, along with any additional chain block metadata provided by the PennyRail settlement node.","failureModes":["Payment not included or insufficient USDC — 402 response requiring x402 payment header","Malformed input object — 400 bad request if required fields are missing or invalid","Chain not found or unsupported chain identifier — may return empty or error response","Service unavailability on Vercel — 503 or timeout","Rate limiting if too many requests are made in quick succession"],"whenToPreferThis":"Use this endpoint when you need programmatic, machine-readable block number lookups for a nano chain and are operating in an x402 micropayment-enabled agent environment. It is well-suited for AI agents that can automatically handle sub-cent USDC payments per call. Prefer this over free alternatives when reliability and machine-readable settlement semantics are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:57:58.465Z","isFirstParty":false}