{"uid":"cap_7as4cO-tCG4Pi45liuEuZ","slug":"pennyrail-nano-chain-block-number-proven-block-number-lookup-2a01d361","name":"PennyRail Nano Chain Block Number – Proven Block Number Lookup","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/p/nano/chain.block-number--proven-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_DfetyKp2kbiNJCBEM9Rj8","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 and the latest proven block number on a nano chain via a paid settlement endpoint.","exampleAgentPrompt":"What is the current block number and the latest proven block number on the nano chain right now?","exampleUseCases":[{"title":"Settlement state verification","prompt":"Can you check what the current block number and the proven block number are on the nano chain so I can confirm my settlement is finalized?"},{"title":"Block height monitoring for dApp","prompt":"I need to know the latest proven block number on the nano chain to make sure my dApp is in sync — can you fetch that for me?"},{"title":"Audit trail block anchoring","prompt":"Fetch the current block number and proven block number from the nano chain so I can anchor my audit record to the right on-chain state."}],"resultDescription":"Returns a JSON object containing the current block number on the nano chain and the latest proven block number, allowing callers to determine on-chain finality and settlement state.","failureModes":["Invalid or missing input object returns a 400 error","Payment not included or insufficient USDC triggers a 402 Payment Required response","Chain node unavailable or unreachable returns a 503 or timeout","Malformed response if the underlying chain RPC is degraded","Rate limiting if too many requests are sent in quick succession"],"whenToPreferThis":"Use this endpoint when you need a lightweight, pay-per-call lookup of the current and proven block numbers on a nano chain for settlement, finality checking, or synchronization purposes — particularly in automated agent workflows that require on-chain state without running a full node.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:21:56.455Z","isFirstParty":false}