{"uid":"cap_5XN6Au9LszmULZ6bUB1Tl","slug":"synapse-api-optimism-latest-block-ee77639f","name":"Synapse API — Optimism Latest Block","description":"High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.","url":"https://synapse-api-brown.vercel.app/api/optimism/block/latest","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","properties":{},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_433QWkIpXo4Dcew5e4bO1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches the most recent block data from the Optimism (OP Mainnet) blockchain network","exampleAgentPrompt":"What's the latest block on the Optimism network right now — give me the block number, hash, and timestamp?","exampleUseCases":[{"title":"Real-time Optimism chain monitoring","prompt":"Keep checking the latest Optimism block and alert me if block production stops for more than 30 seconds — I need to monitor the chain head in real time."},{"title":"DApp sync status check","prompt":"What's the current block number on Optimism mainnet? I need to compare it against my app's last synced block to see how far behind we are."},{"title":"On-chain event timing verification","prompt":"Grab the latest Optimism block and tell me its timestamp — I need to verify whether a transaction I submitted has been included in a recent block."}],"resultDescription":"Returns the latest Optimism block object including block number, block hash, parent hash, timestamp, miner/validator address, gas used, gas limit, and the list or count of transactions included in that block.","failureModes":["Network or RPC node unavailability returns a 5xx error","Payment not provided or invalid x402 payment header returns 402 Payment Required","Malformed request body returns 400 Bad Request","Rate limiting or quota exceeded returns 429 Too Many Requests","Optimism node sync lag may return a block that is slightly behind the true chain head"],"whenToPreferThis":"Choose this endpoint when you need quick pay-per-call access to Optimism latest block data without setting up your own RPC node or managing API keys for a traditional provider. Ideal for agents that need occasional real-time Optimism chain state checks and can pay $0.01 USDC per call via x402 micropayments.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:08:07.046Z","isFirstParty":false}