{"uid":"cap_Cl-duNcWtjCS6jsNCGWZb","slug":"laevitas-historical-options-put-call-volume-ratio-72384850","name":"Laevitas Historical Options Put/Call Volume Ratio","description":"Professional market data API for crypto derivatives, spot markets, prediction markets, Hyperliquid HyperCore data, proprietary volatility surfaces, and analytics.\n\n## Authentication\n\nUse an API key for authenticated REST requests:\n\n```http\nX-API-Key: your-api-key-here\n```\n\nData and history endpoints also accept x402 without an API key: 1, 5 or 10 credits ($0.001 each) for data up to 1 year, 1–3 years or older.\n\n**Subscriptions with USDC:** Premium and Enterprise can be purchased on Base or Solana for a month, a quarter, six months or a year. Access is prepaid, with no automatic renewal. [Buy a subscription](https://v3.laevitas.ch/profile/subscription/wallet) or read the [USDC subscription guide](/x402#subscriptions).\n\nThe subscription belongs to your signed-in Laevitas account; wallet sign-in does not require an email. Enterprise users generate an API key in V3 after activation. Plan and billing-period limits still apply. Subscription purchases are separate from API credit bundles.\n\nFor Claude MCP, add `https://apiv2.laevitas.ch/api/v1/mcp`, select **Sign in now → Register automatically**\nwith no custom headers, and authorize with your API key on the Laevitas page.\nDo not enter a client ID or secret manually. All OAuth clients require PKCE S256.\nConnection guide: [MCP setup](/mcp). CIMD / published client identity is not supported.\n\n| Resource | Path |\n| --- | --- |\n| OpenAPI JSON | `GET /openapi.json` |\n| x402 discovery | `GET /.well-known/x402` |\n| Changelog | `GET /api/v1/changelog` |\n| WebSocket docs | `GET /websocket` |\n\n## REST Surfaces\n\n| Surface | Examples |\n| --- | --- |\n| Instruments | Cross-market contract reference data |\n| Futures | OHLCVT, trades, tickers, orderbook, liquidations, carry |\n| Perpetuals | OHLCVT, trades, funding, open interest, orderbook, liquidations |\n| Options | OHLCVT, trades, Greeks, volatility, flow, dealer GEX |\n| Options Backtests | Strategy templates, asynchronous submission, status, combined results, cancellation |\n| Vol Surface | Proprietary surface snapshots, slices, strikes, term structure, risk |\n| Spot | OHLCVT, ticker, trades, volume, L2 orderbook, snapshots |\n| Predictions | Polymarket instruments, categories, trades, ticker history |\n| Hyperliquid - HyperCore | Node-derived fills, liquidations, positions, funding, TWAPs, resting orders, L2 books |\n| Analytics | Realized volatility and derived metrics |\n\n## Pagination\n\nBacktests are asynchronous jobs, not paginated market-data queries. Start with\n`GET /api/v1/options/backtests/strategies`, submit with `POST /api/v1/options/backtests`,\nthen poll `/{id}` and retrieve `/{id}/result`. These responses have no data/meta wrapper.\n\nPaginated endpoints return the cursor at `meta.next_cursor`. Pass that value back as the `cursor` query parameter to fetch the next page.\n\n## WebSocket Streaming\n\nReal-time streams are documented at `/websocket`.\n\n| Data | Channel pattern |\n| --- | --- |\n| Trades | `trades.{market}.{exchange}.{instrument}` |\n| OHLC ticker | `ohlc.ticker.{market}.{exchange}.{instrument}.{timeframe}` |\n| OHLCVT | `ohlc.vt.{market}.{exchange}.{instrument}.{timeframe}` |\n\nVariables: `market` is one of `perpetuals`, `futures`, `options`, or `spot`; `timeframe` is one of `1m`, `5m`, `15m`, `1h`, `4h`, or `1d`.\n\n## Quick Start\n\n```bash\ncurl \"https://apiv2.laevitas.ch/api/v1/futures/ohlcvt?exchange=deribit&instrument_name=BTC-PERPETUAL\" \\\n  -H \"X-API-Key: your-api-key-here\"\n```","url":"https://apiv2.laevitas.ch/api/v1/historical/options/volume_pc_ratio/%7Bmarket%7D/%7Bcurrency%7D?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["start"],"properties":{"end":{"type":"string","description":"Date-only includes the whole UTC day. Omitted end is end of tomorrow UTC."},"page":{"type":"integer","description":"Default query page 1; omitted meta.page matches v1."},"limit":{"type":"integer","description":"Default query 10 rows unless stated otherwise; otherwise omitted meta.total_pages uses divisor 1 as in v1. Max pain counts maturity rows. Daily (1d) options_oi_by_currency, options_volume_by_currency and options_volume_total with exchange=aggregate use at most 2 rows per page, default 2. Larger limits return 400 POSITIONING_DAILY_PAGE_TOO_LARGE. Use limit=2 from page=1 and follow total_pages; the date range and totals are unchanged. Other series and resolutions keep their existing limits."},"start":{"type":"string","description":"Legacy ISO/date-only or 10/13-digit epoch."},"granularity":{"type":"string","description":"UTC sample grid, not interval aggregation; omitted or -- means native."}}},"responseSchema":{"type":"object","required":["meta","items"],"properties":{"meta":{"type":"object","required":["total","items","total_pages"],"properties":{"page":{"type":"integer","maximum":9007199254740991,"minimum":0,"exclusiveMinimum":true},"items":{"type":"integer","maximum":9007199254740991,"minimum":0},"total":{"type":"integer","maximum":9007199254740991,"minimum":0},"total_pages":{"type":"integer","maximum":9007199254740991,"minimum":0}},"additionalProperties":false},"items":{"type":"array","items":{"type":"object","required":["date","p","c","pc","p_p","c_p","pc_p","p_notional","c_notional"],"properties":{"c":{"type":"number","nullable":true,"description":"Corresponding total call quantity, rounded to four decimals. Not USD."},"p":{"type":"number","nullable":true,"description":"Total put open-interest quantity (OI series) or retained volume quantity (volume series), rounded to four decimals. Not USD."},"pc":{"type":"number","nullable":true,"description":"Put/call quantity ratio p / c, dimensionless, rounded to three decimals. A nonfinite ratio is null, not zero."},"c_p":{"type":"number","nullable":true,"description":"USD-equivalent premium valuation of call quantity, rounded to four decimals. Null when required valuation inputs are unavailable."},"p_p":{"type":"number","nullable":true,"description":"USD-equivalent premium valuation of put quantity, rounded to four decimals. Second p means premium, not probability. Volume valuation is not realized traded premium."},"date":{"type":"integer","maximum":9007199254740991,"minimum":0,"description":"Observation time in Unix milliseconds, UTC. Resolution samples timestamps, not interval totals."},"pc_p":{"type":"number","nullable":true,"description":"Put/call premium-valuation ratio p_p / c_p, dimensionless, rounded to two decimals; not the quantity ratio pc."},"c_notional":{"type":"number","nullable":true,"description":"Call quantity times underlying reference price, summed at this timestamp in USD-equivalent units. Not premium valuation. Volume quantities are converted from contracts to base units where required before valuation. Null if any contributing positive quantity lacks a valid reference price; zero quantity retains zero. Independent of premium availability."},"p_notional":{"type":"number","nullable":true,"description":"Put quantity times underlying reference price, summed at this timestamp in USD-equivalent units. Not premium valuation. Volume quantities are converted from contracts to base units where required before valuation. Null if any contributing positive quantity lacks a valid reference price; zero quantity retains zero. Independent of premium availability."}},"additionalProperties":false}}},"additionalProperties":false},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TibBYpJyesok64PM_OaPk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns historical time-series data of put/call volume (or open interest) ratios for crypto options by market and currency, including quantity and notional/premium breakdowns.","exampleAgentPrompt":"Pull the historical daily put/call volume ratio for BTC options on Deribit from January 1 2024 to March 31 2024, 10 rows per page, starting at page 1.","exampleUseCases":[{"title":"Crypto options sentiment dashboard","prompt":"Give me the daily put/call volume ratio for ETH options on Deribit from July 1 2024 through September 30 2024 — I want to see how sentiment shifted over that quarter, 10 rows per page from page 1."},{"title":"Backtesting options market signals","prompt":"I need historical put/call OI ratio data for BTC on the aggregate exchange from January 1 2023 to December 31 2023, with daily granularity, limit 10 per page starting at page 1, so I can backtest a contrarian options signal."},{"title":"Notional put/call imbalance monitoring","prompt":"Fetch the historical put/call notional ratio for SOL options on Deribit from March 1 2024 to April 30 2024, 10 rows per page, page 1 — I want to see if there was a big notional imbalance around that period."}],"resultDescription":"A paginated list of time-series observations, each containing Unix millisecond timestamp, put quantity, call quantity, put/call quantity ratio, put premium valuation in USD, call premium valuation in USD, put/call premium ratio, put notional in USD, and call notional in USD. Accompanied by pagination metadata (total items, total pages, current page).","failureModes":["Missing required 'start' parameter returns 400 validation error","Invalid market or currency symbol returns 404 or empty result set","Requesting daily page size > 2 for aggregate daily series returns 400 POSITIONING_DAILY_PAGE_TOO_LARGE","Invalid date format returns 400 parse error","Nonfinite put/call ratio (e.g. zero calls) returned as null rather than Infinity","Unauthenticated request without x402 payment or API key returns 401/402","Date range exceeding plan tier without sufficient credits returns 402 payment required"],"whenToPreferThis":"Choose this endpoint when you need time-series historical put/call ratio analysis for crypto options markets — specifically for sentiment analysis, backtesting, or trend monitoring using quantity, premium, or notional dimensions. Prefer it over live/snapshot endpoints when studying past market dynamics. It is the right choice when you need paginated, granularity-controlled historical data across specific exchanges and underlying assets.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:42:16.045Z","isFirstParty":false,"canonicalSlug":"laevitas-historical-options-put-call-volume-ratio-72384850"}