{"uid":"cap_QgKs2Wn-mmfVu7MKJy8pu","slug":"carbon-cashmere-open-interest-history-api-eth-d54457d3","name":"Carbon & Cashmere Open Interest History API — ETH","description":"Professional crypto market intelligence. Real-time prices, signals, and market scoring.","url":"https://api.carbon-cashmere.de/v1/history/oi/ETH","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"coin":"BTC","days":7,"stats":{"change_pct":2.1,"current_total_usd":111000000000},"series":[{"ts":"2026-04-11T00:00:00Z","total_oi_usd":108500000000,"binance_oi_usd":52000000000}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"down","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_BjEvMVVQqkmxy1-ogMzyB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns historical open interest (OI) time-series data for Ethereum, including daily total OI in USD, per-exchange breakdowns, and summary change statistics","exampleAgentPrompt":"Pull the last 7 days of Ethereum open interest history from Carbon & Cashmere — I want to see the daily total OI in USD and how much it's changed over the period.","exampleUseCases":[{"title":"Detect ETH leverage buildup early","prompt":"Check the Ethereum open interest data from Carbon & Cashmere for the past 14 days — I want to know if OI has been steadily climbing, which could signal leverage buildup before a potential squeeze."},{"title":"Compare ETH OI across exchanges","prompt":"Pull the last 30 days of ETH open interest history and break it down by exchange — I want to see which platforms like Binance are driving the most derivatives activity and how their share has shifted over time."},{"title":"Weekly ETH derivatives positioning report","prompt":"Grab this week's Ethereum open interest data from Carbon & Cashmere and summarize how total OI in USD has moved day by day — I need it for my weekly derivatives positioning report."}],"resultDescription":"A JSON object containing the coin identifier (ETH), the requested lookback window in days, summary stats (total OI change percent, current total OI in USD), and a time-series array of daily OI snapshots with timestamps, total OI USD, and per-exchange OI USD (e.g. Binance).","failureModes":["Invalid or unsupported coin symbol returns error or empty series","Missing payment / insufficient USDC balance triggers 402 Payment Required","Rate limit exceeded returns 429 Too Many Requests","Network timeout if upstream exchange data is unavailable","Malformed query parameters return 400 Bad Request"],"whenToPreferThis":"Use this endpoint when you need historical open interest time-series data specifically for ETH (Ethereum) futures/derivatives markets, particularly when you want daily granularity, per-exchange breakdowns, and change-percentage summaries. Prefer this over generic price endpoints when the analytical goal is derivatives positioning, leverage buildup detection, or OI-driven market signals rather than spot price.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:39:06.408Z","isFirstParty":false}