{"uid":"cap_43u4OsSCYoffZRlRnJVPl","slug":"carbon-cashmere-beta-to-btc-signal-api-sol-99038609","name":"Carbon & Cashmere Beta-to-BTC Signal API – SOL","description":"Professional crypto market intelligence. Real-time prices, signals, and market scoring.","url":"https://api.carbon-cashmere.de/v1/beta-to-btc/SOL","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"beta":1.12,"coin":"ETH","_meta":{"disclaimer":"Informational research data only — not investment advice."},"regime":"amplifier","r_squared":0.78,"stability":"stable","rolling_30d":{"std":0.08,"mean":1.11,"current_beta":1.15},"lookback_days":90,"alpha_daily_pct":-0.02}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/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_KaFF7vxfrBjIG7u9oSHiV","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the 90-day rolling beta of SOL relative to BTC, including market regime classification, alpha, R-squared, and stability metrics.","exampleAgentPrompt":"What's SOL's current beta against Bitcoin — is it an amplifier or dampener right now, and how stable has it been over the past 30 days?","exampleUseCases":null,"resultDescription":"A JSON object with SOL's 90-day beta vs BTC, the current market regime label (e.g. 'amplifier'), daily alpha percentage, R-squared fit quality, a rolling 30-day window with mean/std/current beta, stability classification ('stable' or otherwise), and a disclaimer noting the data is for informational research only.","failureModes":["Unsupported coin symbol returns an error or empty result","Network latency or API downtime returns a 5xx error","Stale or missing market data may affect beta accuracy","Invalid endpoint path format returns 404"],"whenToPreferThis":"Use this endpoint when you need a quantitative, regression-based measure of how SOL moves relative to BTC — specifically when you want the market regime label (amplifier/dampener), R-squared confidence, and rolling stability stats in a single call rather than computing beta manually from raw price feeds.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:55:30.527Z","isFirstParty":false}