{"uid":"cap_nUhgNXYJa8vDZJo8cxN-D","slug":"solana-mint-instant-intel-latest-blockhash-253b4b86","name":"Solana Mint Instant Intel – Latest Blockhash","description":"Latest Solana blockhash + lastValidBlockHeight for building and signing transactions (confirmed, cached <=1 s).","url":"https://mintintel.35-171-220-195.sslip.io/v1/sol/blockhash?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"],"type":"string"},"queryParams":{"type":"object","properties":{},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["blockhash","lastValidBlockHeight"],"properties":{"blockhash":{"type":"string"},"lastValidBlockHeight":{"type":"integer"}}}}}}},"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_MvyKazC1zk7P9vieKTA6A","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 latest Solana blockhash and lastValidBlockHeight for building and signing transactions, cached for up to 1 second at confirmed commitment level.","exampleAgentPrompt":"I need the latest Solana blockhash and lastValidBlockHeight so I can build and sign a transaction right now — grab the confirmed one from Mint Intel.","exampleUseCases":[{"title":"Sign and submit a Solana transaction","prompt":"I'm about to build and sign a Solana transaction — can you get me the latest blockhash and lastValidBlockHeight so I can include them before broadcasting?"},{"title":"Check Solana blockhash freshness for transaction validity","prompt":"What's the current Solana blockhash and how many blocks do I have left before it expires? I want to make sure my transaction won't get rejected for using a stale blockhash."},{"title":"Automate Solana transaction batching pipeline","prompt":"My transaction batching bot needs the latest Solana recent blockhash and lastValidBlockHeight every time before it submits a batch — can you pull that now?"}],"resultDescription":"Returns a JSON object containing two fields: 'blockhash' (a base58-encoded string representing the latest confirmed Solana blockhash) and 'lastValidBlockHeight' (an integer indicating the last block height at which a transaction using this blockhash will still be accepted by the network). Data is cached for up to 1 second at confirmed commitment level.","failureModes":["Stale cache: if the cache hasn't refreshed within 1 second, the blockhash may be slightly behind the live chain tip","Network unavailability: if the upstream Solana RPC is unreachable, the endpoint may return an error or timeout","Payment failure: missing or invalid x402 payment header results in a 402 Payment Required response","Rate limiting: excessive requests may be throttled beyond the cached refresh window"],"whenToPreferThis":"Choose this endpoint when you need a fast, low-cost, pre-cached Solana blockhash and lastValidBlockHeight for transaction construction — especially in automated pipelines where making a raw Solana RPC call would add latency or complexity. At $0.001 USDC per call, it is cheaper than maintaining your own RPC node for this single query. Prefer it over direct RPC when you need a simple one-call solution with caching guarantees and confirmed commitment semantics.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:39:40.016Z","isFirstParty":false,"canonicalSlug":"solana-mint-instant-intel-latest-blockhash-253b4b86"}