MCP Server
OptionWhales
io.optionwhales/options-flow
What this MCP does
Provides US stock and options data including unusual flow, option chains, gamma and Greek exposure, earnings, financials, short interest, news, and market screens.
Capabilities
Tools
34
tools
abnormal_trades_current
Unusual options activity
Unusual options activity this session — large, sweep-like or volume-versus-open-interest outlier orders with ticker, direction, size and time. Use for 'any unusual options activity in NVDA?' or 'biggest options trades today'. Without an account: the latest 3 trades (ticker, direction, type, time); free: the latest 5 with core fields; Pro: the full feed.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'limit': {'type': 'integer', 'maximum': 5000, 'minimum': 1, 'description': 'Trades to return (default 100)'}}, 'additionalProperties': False}
confirm_registration
Confirm a free API key
Confirm a key from register_free_key using the code in the 'Confirm your OptionWhales API key' email, which makes the key permanent. Safe to call again.
Idempotent
Input schema
{'type': 'object', 'required': ['code'], 'properties': {'code': {'type': 'string', 'description': 'Confirmation code from the email'}}, 'additionalProperties': False}
contract_atm
At-the-money option strikes
Near-the-money option strikes grouped by expiry, within a band around spot (default plus or minus 5%). Use to find the liquid at-the-money contracts for a ticker. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'date': {'type': 'string', 'description': 'Snapshot date YYYY-MM-DD (default latest)'}, 'width': {'type': 'number', 'maximum': 0.5, 'minimum': 0.001, 'description': 'Strike band as a fraction of spot (default 0.05)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
contract_chain
Option chain
Option chain for a ticker from the latest open-interest snapshot: each contract's OCC symbol, strike, expiry, type and open interest (OI > 0). Filter by expiry, call/put or minimum OI. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'date': {'type': 'string', 'description': 'Snapshot date YYYY-MM-DD (default latest)'}, 'type': {'enum': ['call', 'put'], 'type': 'string'}, 'limit': {'type': 'integer', 'maximum': 10000, 'minimum': 1, 'description': 'Contracts to return (default 500)'}, 'expiry': {'type': 'string', 'description': 'One expiry, YYYY-MM-DD'}, 'min_oi': {'type': 'integer', 'minimum': 0}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
contract_historic
Option contract price history
Daily OHLC price bars for one option contract by OCC symbol (e.g. SPY260130C00600000) between two dates, about a year of look-back. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['occ', 'from', 'to'], 'properties': {'to': {'type': 'string', 'description': 'YYYY-MM-DD'}, 'occ': {'type': 'string', 'description': 'OCC option symbol, e.g. SPY260130C00600000'}, 'from': {'type': 'string', 'description': 'YYYY-MM-DD'}}, 'additionalProperties': False}
darkpool_ranking
Dark pool ranking
Off-exchange (dark pool) activity: the market-wide off-exchange share and a per-ticker ranking by off-exchange notional for a date (default latest). Use for 'where is dark pool activity concentrated?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'date': {'type': 'string', 'description': 'YYYY-MM-DD (default latest)'}}, 'additionalProperties': False}
directional_current
Directional score by ticker
Per-ticker directional score for this session (-1 bearish to +1 bullish) combining net premium, order clustering and implied volatility. Use to rank names by bullish or bearish options positioning. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'max_display': {'type': 'integer', 'maximum': 500, 'minimum': 10, 'description': 'Tickers to return (default 100)'}}, 'additionalProperties': False}
dividends
Dividend history
Cash dividend history for a stock: amount, frequency, ex-dividend and pay dates. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'limit': {'type': 'integer', 'maximum': 500, 'minimum': 1, 'description': 'Dividends to return (default 20)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
earnings_calendar
Earnings calendar
Upcoming earnings reports: date, before/after market, EPS and revenue estimates. Pass a ticker for 'when does NVDA report?', or omit it for 'who reports this week?' (days sets the window, default 7). Without an account: date and time for one ticker or the next 3 reporters; free: up to 10 with estimates; Pro: the full calendar plus the options-flow intent label.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'days': {'type': 'integer', 'maximum': 30, 'minimum': 1, 'description': 'Days ahead to return (default 7)'}, 'limit': {'type': 'integer', 'maximum': 500, 'minimum': 1, 'description': 'Reporters to return (default 10)'}, 'ticker': {'type': 'string', 'description': 'Optional ticker, e.g. NVDA'}}, 'additionalProperties': False}
earnings_current
Earnings options positioning
Options positioning around earnings for companies reporting this session: pre-earnings order flow, Greeks and intent signals. Use for 'how are traders positioned into NVDA earnings?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {}, 'additionalProperties': False}
economic_calendar
Economic calendar
Upcoming US economic events (CPI, FOMC, jobs, GDP and more) with impact level and the ETFs that historically react. Use for 'what macro events are coming up?'. Without an account: the next 3 high-impact events; free and Pro: the full calendar.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'impact': {'type': 'string', 'description': 'Optional filter: high, medium or low'}}, 'additionalProperties': False}
financials
Company financials
Company financial statements (income statement, balance sheet, cash flow) for trailing-twelve-month, quarterly or annual periods, latest first. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'limit': {'type': 'integer', 'maximum': 40, 'minimum': 1, 'description': 'Periods to return (default 4)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}, 'timeframe': {'enum': ['ttm', 'quarterly', 'annual'], 'type': 'string'}}, 'additionalProperties': False}
gex_levels
Gamma exposure (GEX) levels
Dealer gamma-exposure key levels for a ticker: gamma flip, max pain, call wall, put wall and spot. Use when asked where price may pin, bounce, stall or accelerate, e.g. 'what are the gamma levels on SPY?'. session defaults to the latest trading day. Without an account and on free: SPY and QQQ; Pro: any ticker.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}, 'session': {'type': 'string', 'description': "Trading date YYYY-MM-DD, or 'latest' (default)"}, 'dte_filter': {'type': 'integer', 'description': 'Optional expiry window filter'}}, 'additionalProperties': False}
greek_exposure
Dealer greek exposure
Dealer gamma, charm and vanna exposure for a ticker, by strike and by expiry (calls, puts, net). Use for detailed hedging-flow analysis beyond the key GEX levels. session defaults to the latest trading day. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}, 'session': {'type': 'string', 'description': "Trading date YYYY-MM-DD, or 'latest' (default)"}, 'dte_filter': {'enum': ['all', '0dte', '0+1', 'weekly', 'monthly'], 'type': 'string'}}, 'additionalProperties': False}
insider_trades
Insider trades
SEC Form 4 insider transactions for a stock, latest first: insider, transaction code, shares, price, value and the SEC filing link. Use for 'are insiders buying AAPL?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'limit': {'type': 'integer', 'maximum': 1000, 'minimum': 1, 'description': 'Transactions to return (default 25)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
intent_flow_current
Options flow intent rankings
Today's options-flow intent rankings: which tickers show bullish vs bearish institutional positioning (accumulation, distribution, hedging), with direction bias and strength. Use for 'what are big options traders doing today?' or 'where is smart money flowing?'. Without an account: top 3 tickers (ticker, intent, direction); free: top 3 with core fields; Pro: every tracked ticker with all fields.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {}, 'additionalProperties': False}
market_tide
Market options tide
Market-wide options net-premium 'tide': signed large-order premium into calls versus puts, its intraday cumulative curve, and the top net-premium tickers for a session. Use for 'is options flow bullish or bearish overall today?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'top_n': {'type': 'integer', 'maximum': 200, 'minimum': 1, 'description': 'Top tickers to include (default 25)'}, 'session': {'type': 'string', 'description': "Trading date YYYY-MM-DD, or 'latest' (default)"}}, 'additionalProperties': False}
momentum_rankings
Options flow momentum rankings
Tickers ranked by options-flow momentum (the fastest-changing positioning this session). Use for 'which stocks have the strongest options momentum right now?'. Free keys: top 3; Pro: up to 200 with all fields.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'top': {'type': 'integer', 'maximum': 200, 'minimum': 1, 'description': 'Tickers to return (default 50)'}}, 'additionalProperties': False}
oi_movers
Open interest movers
Tickers ranked by day-over-day change in total options open interest (top gainers, losers, most active). Use for 'where is new options positioning building?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'dte': {'enum': ['all', 'lt8', 'gte8'], 'type': 'string'}, 'limit': {'type': 'integer', 'maximum': 500, 'minimum': 1, 'description': 'Tickers to return (default 50)'}}, 'additionalProperties': False}
oi_timeseries
Open interest history
Open interest and volume across recent snapshots for one ticker (calls, puts, total). Use to see whether options positioning is building or unwinding. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'dte': {'enum': ['all', 'lt8', 'gte8'], 'type': 'string'}, 'slot': {'enum': ['AM', 'PM'], 'type': 'string'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
register_free_key
Get a free API key
Get a FREE OptionWhales API key for the person you are helping. Only use this if they do not already have a key. Pass their own email address (ask if unsure). The key in the response works immediately for 24 hours, and this MCP session starts using it automatically when the client supports sessions. OptionWhales emails them 'Confirm your OptionWhales API key' with a confirmation code: if you can read their inbox, call confirm_registration with that code; otherwise ask them to click the link. Once confirmed the key is permanent (and Pro if their account is Pro).
Open world
Input schema
{'type': 'object', 'required': ['email'], 'properties': {'email': {'type': 'string', 'description': 'Email address of the person you act for'}, 'agent_name': {'type': 'string', 'maxLength': 60, 'description': "Your assistant's name, shown to them in the email"}}, 'additionalProperties': False}
screener
Multi-signal stock screener
Screen the market across options-flow net premium, open-interest change, FDA catalysts and congressional trading. Filter by direction, minimum premium or OI change, catalyst window, trial phase or congress activity; sort and limit. Use for 'find bullish options-flow names with an FDA catalyst in the next 30 days'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'limit': {'type': 'integer', 'maximum': 200, 'minimum': 1, 'description': 'Rows to return (default 25)'}, 'order': {'enum': ['desc', 'asc'], 'type': 'string'}, 'phase': {'enum': ['any', 'PHASE2', 'PHASE3'], 'type': 'string'}, 'session': {'type': 'string', 'description': "Trading date YYYY-MM-DD, or 'latest' (default)"}, 'signals': {'type': 'array', 'items': {'enum': ['flow', 'oi', 'fda', 'congress'], 'type': 'string'}, 'description': 'Signals a row must carry'}, 'sort_by': {'enum': ['abs_premium', 'net_premium', 'oi_change', 'order_count', 'congress_30d', 'next_fda_days'], 'type': 'string'}, 'direction': {'enum': ['any', 'bullish', 'bearish'], 'type': 'string'}, 'has_congress': {'type': 'boolean', 'description': 'Require congressional trades in the last 30 days'}, 'min_oi_change': {'type': 'integer', 'description': 'Minimum day-over-day OI change'}, 'fda_within_days': {'type': 'integer', 'maximum': 1095, 'minimum': 0, 'description': 'Require an FDA catalyst within N days (0 = no requirement)'}, 'min_abs_premium': {'type': 'number', 'minimum': 0, 'description': 'Minimum absolute net premium in dollars'}}, 'additionalProperties': False}
seasonality
Monthly seasonality
Monthly seasonality for a stock: average and median return by calendar month, hit rate, best and worst years over a 1 to 25 year look-back. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'years': {'type': 'integer', 'maximum': 25, 'minimum': 1, 'description': 'Look-back in years (default 10)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
sector_tide
Sector options tide
Options net premium aggregated by sector for a session. Use for 'which sectors are seeing bullish options flow?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'session': {'type': 'string', 'description': "Trading date YYYY-MM-DD, or 'latest' (default)"}}, 'additionalProperties': False}
short_interest
Short interest
FINRA short interest history (bi-weekly settlements) with days to cover for a stock. Use for 'how heavily shorted is GME?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'limit': {'type': 'integer', 'maximum': 500, 'minimum': 1, 'description': 'Settlements to return (default 24)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
short_volume
Daily short volume
Daily FINRA short-sale volume and short-volume ratio for a stock, with per-venue split. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'limit': {'type': 'integer', 'maximum': 500, 'minimum': 1, 'description': 'Days to return (default 30)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
stock_candles
Stock intraday candles
Intraday OHLCV bars for a stock on a session (default today), 1 to 60 minute bars; returns the most recent `limit` bars. Live bars are real-time for watchlisted symbols and 15 minutes delayed otherwise. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'limit': {'type': 'integer', 'maximum': 1000, 'minimum': 1, 'description': 'Most recent bars to return (default 120)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}, 'session': {'type': 'string', 'description': 'YYYY-MM-DD (default today)'}, 'timespan': {'type': 'integer', 'maximum': 60, 'minimum': 1, 'description': 'Minutes per bar (default 1)'}}, 'additionalProperties': False}
stock_news
Stock news with sentiment
Recent news for a ticker, each article with a pre-computed sentiment (positive, negative, neutral) and its reasoning. Use for 'why is TSLA moving?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'limit': {'type': 'integer', 'maximum': 100, 'minimum': 1, 'description': 'Articles to return (default 10)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
stock_quote
Stock quote
Latest price for a stock or ETF. Real-time for symbols on your key's real-time watchlist; otherwise the most recent price at least 15 minutes old. Use for 'what is NVDA trading at?'. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
stock_splits
Stock split history
Stock split history for a ticker: execution date and split ratio. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'limit': {'type': 'integer', 'maximum': 500, 'minimum': 1, 'description': 'Splits to return (default 20)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
technical_indicator
Technical indicator
Technical indicator series for a stock: SMA, EMA, RSI or MACD on adjusted closes (daily by default), latest first. Use for 'is AAPL overbought?' (RSI) or trend questions. Pro.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker', 'indicator'], 'properties': {'limit': {'type': 'integer', 'maximum': 500, 'minimum': 1, 'description': 'Points to return (default 50)'}, 'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}, 'window': {'type': 'integer', 'maximum': 500, 'minimum': 1, 'description': 'Look-back window for sma/ema/rsi (default 14)'}, 'timespan': {'enum': ['minute', 'hour', 'day', 'week', 'month', 'quarter', 'year'], 'type': 'string'}, 'indicator': {'enum': ['sma', 'ema', 'rsi', 'macd'], 'type': 'string'}, 'long_window': {'type': 'integer', 'maximum': 500, 'minimum': 1}, 'short_window': {'type': 'integer', 'maximum': 500, 'minimum': 1}, 'signal_window': {'type': 'integer', 'maximum': 500, 'minimum': 1}}, 'additionalProperties': False}
use_api_key
Use an existing API key
Attach an existing OptionWhales API key to this MCP session, for clients that cannot send an X-API-Key header. Use when the person gives you their key.
Idempotent
Input schema
{'type': 'object', 'required': ['api_key'], 'properties': {'api_key': {'type': 'string', 'description': 'An ow_free_... or ow_pro_... key'}}, 'additionalProperties': False}
volatility_movers
Implied volatility movers
Tickers whose 30-day at-the-money implied volatility moved most versus the prior close (expansions and/or compressions). Use for 'which stocks saw the biggest IV spikes today?'. Free keys: top 3; Pro: up to 50.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'properties': {'limit': {'type': 'integer', 'maximum': 50, 'minimum': 1, 'description': 'Tickers to return (default 10)'}, 'direction': {'enum': ['both', 'expansions', 'compressions'], 'type': 'string'}}, 'additionalProperties': False}
volatility_term_structure
Implied volatility term structure
At-the-money implied volatility by expiration (the IV term structure), plus spot and the overall ATM IV for a ticker. Use for 'is NVDA implied volatility elevated?' or 'is the vol curve inverted before earnings?'. Free keys: SPY, QQQ, AAPL, MSFT, GOOGL, AMZN, NVDA, META, TSLA; Pro: any ticker.
Read only
Open world
Idempotent
Input schema
{'type': 'object', 'required': ['ticker'], 'properties': {'ticker': {'type': 'string', 'description': 'Stock or ETF ticker, e.g. NVDA, SPY, BRK.B'}}, 'additionalProperties': False}
History
Recent tool changes
Added
use_api_key
Oct. 4, 2026, 2:40 a.m.
Added
confirm_registration
Oct. 4, 2026, 2:40 a.m.
Added
register_free_key
Oct. 4, 2026, 2:40 a.m.
Added
screener
Oct. 4, 2026, 2:40 a.m.
Added
seasonality
Oct. 4, 2026, 2:40 a.m.
Added
insider_trades
Oct. 4, 2026, 2:40 a.m.
Added
short_volume
Oct. 4, 2026, 2:40 a.m.
Added
short_interest
Oct. 4, 2026, 2:40 a.m.
Added
stock_news
Oct. 4, 2026, 2:40 a.m.
Added
stock_splits
Oct. 4, 2026, 2:40 a.m.
Added
dividends
Oct. 4, 2026, 2:40 a.m.
Added
financials
Oct. 4, 2026, 2:40 a.m.
Added
technical_indicator
Oct. 4, 2026, 2:40 a.m.
Added
stock_candles
Oct. 4, 2026, 2:40 a.m.
Added
stock_quote
Oct. 4, 2026, 2:40 a.m.
Added
contract_historic
Oct. 4, 2026, 2:40 a.m.
Added
contract_atm
Oct. 4, 2026, 2:40 a.m.
Added
contract_chain
Oct. 4, 2026, 2:40 a.m.
Added
oi_timeseries
Oct. 4, 2026, 2:40 a.m.
Added
oi_movers
Oct. 4, 2026, 2:40 a.m.
Added
volatility_movers
Oct. 4, 2026, 2:40 a.m.
Added
volatility_term_structure
Oct. 4, 2026, 2:40 a.m.
Added
greek_exposure
Oct. 4, 2026, 2:40 a.m.
Added
gex_levels
Oct. 4, 2026, 2:40 a.m.
Added
earnings_calendar
Oct. 4, 2026, 2:40 a.m.
Added
economic_calendar
Oct. 4, 2026, 2:40 a.m.
Added
earnings_current
Oct. 4, 2026, 2:40 a.m.
Added
darkpool_ranking
Oct. 4, 2026, 2:40 a.m.
Added
sector_tide
Oct. 4, 2026, 2:40 a.m.
Added
market_tide
Oct. 4, 2026, 2:40 a.m.
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