{"uid":"cap_LQg5bOV_AaMpyRNQLcYBD","slug":"agent-signals-btc-lead-lag-signal-x402-5d38ef59","name":"Agent Signals BTC Lead-Lag Signal (x402)","description":"Pay-per-call crypto market-intelligence API for autonomous AI trading agents. Funding-rate, BTC lead-lag and trend/chop regime signals, settled in USDC over x402.","url":"https://cryptojp.com/v1/leadlag","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","required":["symbol"],"properties":{"symbol":{"type":"string","description":"Altcoin base symbol (not BTC), e.g. SOL, ETH, DOGE."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"base":"SOL","note":"SOL tends to follow BTC by ~2 min (corr 0.61).","reference":"BTC","confidence":0.61,"correlation":0.61,"bestLagMinutes":2,"impliedNextBias":"up","btcMomentumPctOverLag":0.18}},"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{"symbol":"SOL"}}},"response":{"ok":true,"base":"SOL","note":"SOL moves coincidentally with BTC (no measurable lag in last 2h).","reference":"BTC","computedAt":"2026-06-18T06:48:25.206Z","confidence":0.348,"disclaimer":"Derived heuristic from public market data. Not financial advice. Verify before trading.","correlation":0.869,"bestLagMinutes":0,"impliedNextBias":"none","btcMomentumPctOverLag":0.0282}},"exampleRequest":{"symbol":"SOL"},"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.02/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_8tDBDPZMFQErPfXN21ylC","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 BTC-to-altcoin lead-lag correlation and directional bias for a given altcoin symbol, paid per-call via x402 USDC micropayment.","exampleAgentPrompt":"What's the BTC lead-lag signal for SOL right now — how many minutes does SOL typically lag BTC, and is the implied next move up or down?","exampleUseCases":null,"resultDescription":"A JSON object with the altcoin base symbol, best lag in minutes, Pearson correlation coefficient, BTC momentum percentage over the lag window, implied next directional bias (up/down), and a confidence score — plus a human-readable note summarizing the relationship.","failureModes":["Missing or invalid 'symbol' query parameter returns an error response","Symbol is BTC itself (endpoint only supports altcoins, not BTC)","Payment not settled via x402 returns HTTP 402 Payment Required","Symbol not supported or lacking sufficient data returns low confidence or error","Rate limiting or server unavailability returns 5xx error"],"whenToPreferThis":"Use this endpoint when an AI trading agent needs a real-time, quantified measure of how closely and with what time lag a specific altcoin follows BTC price movements, and wants an actionable directional bias derived from current BTC momentum. Prefer this over generic market data APIs when you specifically need lead-lag correlation intelligence rather than raw price data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:41:59.604Z","isFirstParty":false}