{"uid":"cap_6w6gd0h_P4dt-Qal1C4sI","slug":"synapse-api-arbitrum-latest-block-bdd24fda","name":"Synapse API — Arbitrum 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/arbitrum/block/latest?utm_source=zero.xyz","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_7mpTqX0wG4OcPWBwU8jyL","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 Arbitrum blockchain network","exampleAgentPrompt":"What is the latest block on the Arbitrum network right now? I need the block number and timestamp.","exampleUseCases":[{"title":"Real-time Arbitrum block monitoring","prompt":"Keep checking the latest Arbitrum block every few seconds and tell me when the block number jumps by more than 5 in a single interval — something might be wrong with the chain."},{"title":"Arbitrum chain sync verification","prompt":"Fetch the latest block on Arbitrum for me so I can verify my local node is in sync with the network head."},{"title":"Timestamp anchor for DeFi event","prompt":"Grab the current latest block from Arbitrum, I need its timestamp to anchor the start time of my on-chain event logging."}],"resultDescription":"Returns the latest block data from the Arbitrum network, including block number, block hash, timestamp, and associated transaction metadata as of the moment of the request.","failureModes":["Network or RPC node unavailability returns a 5xx error","Payment not processed correctly (x402 payment failure) results in 402 response","Malformed request body returns 400 validation error","Arbitrum network congestion or downtime may cause delayed or stale responses"],"whenToPreferThis":"Choose this endpoint when you need quick, pay-per-call access to the latest Arbitrum block without managing your own RPC node or API keys. Ideal for lightweight agents that only occasionally need chain head data and want to avoid subscription overhead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:40:51.298Z","isFirstParty":false,"canonicalSlug":"synapse-api-arbitrum-latest-block-bdd24fda"}