{"uid":"cap_YSn-DKhOdW5fQEAT3IJij","slug":"arbipulse-cross-exchange-spread-tick-f97a8488","name":"ArbiPulse Cross-Exchange Spread Tick","description":"Cross-exchange spread tick — ONE $0.02 call returns the live executable spread for a pair across Binance, Coinbase, Kraken, Bybit: best bid venue, best ask venue, spread in bps, and a deterministic TRADE / THIN / NONE verdict. Built for arbitrage monitoring loops; escalate to /api/crypto ($0.07) for the full CEX arbitrage read with fees and transfer paths. 30s freshness, no LLM in the path.","url":"https://arbipulse.theaslangroupllc.com/api/spread-tick?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"pair":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"errors":{"type":"object","description":"Documented error responses, keyed by HTTP status code","additionalProperties":{"type":"object","required":["description"],"properties":{"example":{"type":"object"},"description":{"type":"string"}}}},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","errors":{"400":{"example":{"error":"invalid request"},"description":"Invalid or missing parameter(s). Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."},"402":{"description":"Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."},"500":{"example":{"error":"upstream_failed"},"description":"Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."}},"example":{"pair":"BTC/USDT","buy_at":{"ask":118211.1,"exchange":"Kraken"},"sell_at":{"bid":118260.8,"exchange":"Binance"},"verdict":"THIN","deep_read":"https://arbipulse.vercel.app/api/crypto ($0.07)","spread_bps":4.2}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":{"p10Cents":"2.0000","medianCents":"2.0000","p90Cents":"2.0000","minCents":"2.0000","maxCents":"2.0000","p95Cents":"2.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JR8Bikz-kot7vnepc1SbQ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the live executable bid/ask spread for a crypto pair across Binance, Coinbase, Kraken, and Bybit with a deterministic TRADE/THIN/NONE verdict in a single cheap call.","exampleAgentPrompt":"What's the live spread for BTC/USDT across Binance, Coinbase, Kraken, and Bybit right now — is there a TRADE signal or is it too thin?","exampleUseCases":[{"title":"Monitor arbitrage opportunities during market volatility","prompt":"I need to watch for TRADE signals on ETH/USDC across the major exchanges every few seconds — let me know immediately if the spread gets fat enough to execute on."},{"title":"Find best entry and exit venues instantly","prompt":"Where's the tightest spread for BTC right now and which exchanges have the best bid and ask — should I be looking at this pair or is it THIN?"},{"title":"Real-time screening for profitable trading pairs","prompt":"Can you scan for any TRADE-worthy spreads across my watch list of stablecoin pairs right now — I want to know which ones are actually executable across Binance, Coinbase, Kraken, and Bybit?"}],"resultDescription":"Returns the best bid venue, best ask venue, spread in basis points, and a deterministic TRADE / THIN / NONE verdict for the requested pair across Binance, Coinbase, Kraken, and Bybit. Data is refreshed every 30 seconds with no LLM processing in the path.","failureModes":["Unsupported trading pair returns an error or empty result","Stale data if an exchange feed is temporarily down","Payment failure if USDC balance is insufficient for the $0.02 fee","Rate limiting if the monitoring loop calls too frequently"],"whenToPreferThis":"Use this endpoint when you need a fast, cheap ($0.02) snapshot of cross-exchange spread conditions to decide whether to escalate to a full arbitrage analysis. Ideal for high-frequency monitoring loops where you poll spread viability before committing to more expensive computations. Prefer this over the full /api/crypto endpoint when you only need a binary TRADE/THIN/NONE signal without fee breakdowns or transfer path details.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T18:45:10.239Z","isFirstParty":false,"canonicalSlug":"arbipulse-cross-exchange-spread-tick-f97a8488"}