{"uid":"cap_PRF4TLDvF-a-GYXVOF9OX","slug":"carbon-cashmere-cointegration-analysis-api-btc-sol-491ea354","name":"Carbon & Cashmere Cointegration Analysis API (BTC-SOL)","description":"Professional crypto market intelligence. Real-time prices, signals, and market scoring.","url":"https://api.carbon-cashmere.de/v1/cointegration/BTC-SOL","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"base":"BTC","pair":"BTC-ETH","_meta":{"disclaimer":"Informational research data only — not investment advice."},"quote":"ETH","spread":{"current":0.023,"zscore_current":1.42,"beta_coefficient":0.89},"engle_granger":{"p_value":0.012,"test_statistic":-3.42,"critical_values":{"5pct":-3.38}},"lookback_days":90,"mean_reversion":{"adf_p_value":0.018,"half_life_days":4.2},"is_cointegrated_at_5pct":true,"is_cointegrated_at_10pct":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rl9yVWMXQ7FM9GaQ-j8rC","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns cointegration test results and mean-reversion analytics for the BTC-SOL trading pair, including Engle-Granger statistics, spread z-scores, and half-life estimates.","exampleAgentPrompt":"Are BTC and SOL currently cointegrated? I want to know the Engle-Granger test result, the current spread z-score, and how many days the BTC-SOL spread takes to mean-revert on average.","exampleUseCases":null,"resultDescription":"Returns a JSON object with the base and quote assets, Engle-Granger cointegration test statistic and p-value with critical values, current spread value and z-score, beta coefficient, lookback period in days, ADF p-value for the spread, mean-reversion half-life in days, and boolean flags indicating cointegration at 5% and 10% significance levels.","failureModes":["Invalid or unsupported asset pair returns an error","Network timeout if upstream price data is unavailable","Payment failure if x402 USDC payment is not properly included","Stale or insufficient historical data may affect statistical validity","Pair not tracked returns 404 or empty response"],"whenToPreferThis":"Use this endpoint when you need rigorous statistical cointegration testing between BTC and SOL specifically, including Engle-Granger test statistics, spread z-scores, and mean-reversion half-life — ideal for pairs trading strategies, statistical arbitrage setups, or validating whether two crypto assets move together over a 90-day lookback window.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:56:22.599Z","isFirstParty":false}