DocStoX is a free AI-powered research platform for Indian equity markets, covering 5,700+ NSE & BSE stocks with prices, fundamentals, 326 financial ratios, shareholding, FII/DII flows, F&O, IPOs, a visual screener and AI stock scoring.

Yes. DocStoX has a free tier covering stock research, the screener, FII/DII data and educational guides, plus a free MCP API tier (50 tool calls/day) for AI assistants. A Pro plan adds higher limits and advanced features.

What data does DocStoX cover?

Every NSE & BSE listed stock (5,700+ instruments): EOD and intraday prices, income statement / balance sheet / cash flow, 326 ratios, quarterly shareholding, promoter pledge, mutual-fund holdings, FII/DII flows, F&O and option-chain data, analyst forecasts, IPOs, corporate actions and news.

Can AI assistants like ChatGPT or Claude use DocStoX data?

Yes. DocStoX runs a public Model Context Protocol (MCP) server at https://mcp.docstox.com/mcp with 93 tools, so Claude, ChatGPT, Cursor and other MCP clients can pull Indian market data directly. Setup and a free key are at https://docstox.com/mcp.

Derivatives

Index options: chain, max pain, PCR, OI, GEX, VIX. The DocStoX MCP tools in this group, what each returns and the parameters it takes.

Updated 1 October 2026

On this page

get_options_analytics
get_option_chain
get_max_pain
get_oi_buildup
get_pcr_trend
get_gex
get_fii_derivative_positioning
get_india_vix

You do not call these tools yourself. Ask your question in plain English and your AI picks the right one.

`get_options_analytics`Pro

Get options analytics

One-shot options snapshot for an index or F&O stock: spot, max-pain, PCR (OI & volume), ATM implied volatility (atm_iv as a fraction, atm_iv_pct in percent), net GEX + gamma-flip, top call/put OI walls (resistance / support) and a plain-English read of which side option writers dominate. Suited to 'why is <index> stuck / moving' questions. Live during market hours, else the latest end-of-day snapshot (snapshot_date).

symbolrequired: F&O underlying. Index options: NIFTY, BANKNIFTY, FINNIFTY, MIDCPNIFTY, NIFTYNXT50, SENSEX. Stock options use the NSE symbol, e.g. RELIANCE.
expiryoptional: Option expiry date as YYYY-MM-DD, e.g. '2026-10-06'. Omit for the nearest expiry on or after today (IST); an expiry that has already settled is never picked by default.

`get_option_chain`Pro

Get option chain

Compact option chain: ATM ± N strikes with CE/PE last price, OI, OI change, implied volatility (fraction: 0.14 = 14%) and delta.

symbolrequired: F&O underlying. Index options: NIFTY, BANKNIFTY, FINNIFTY, MIDCPNIFTY, NIFTYNXT50, SENSEX. Stock options use the NSE symbol, e.g. RELIANCE.
expiryoptional: Option expiry date as YYYY-MM-DD, e.g. '2026-10-06'. Omit for the nearest expiry on or after today (IST); an expiry that has already settled is never picked by default.
around_atmoptional: Strikes to include on EACH side of the at-the-money strike (1-20); 6 returns 13 strikes.

`get_max_pain`Pro

Get max pain

Daily max-pain / PCR / spot series (nearest unexpired expiry each day): where option writers anchor, and whether spot drifts toward or away from max-pain.

symbolrequired: F&O underlying. Index options: NIFTY, BANKNIFTY, FINNIFTY, MIDCPNIFTY, NIFTYNXT50, SENSEX. Stock options use the NSE symbol, e.g. RELIANCE.
daysoptional: Calendar days of daily history (1-365).

`get_oi_buildup`Pro

Get OI buildup

Per-strike OI-buildup quadrants (long buildup, short buildup, short covering, long unwinding) for the latest end-of-day snapshot, with counts and the most-active strikes.

symbolrequired: F&O underlying. Index options: NIFTY, BANKNIFTY, FINNIFTY, MIDCPNIFTY, NIFTYNXT50, SENSEX. Stock options use the NSE symbol, e.g. RELIANCE.
expiryoptional: Option expiry date as YYYY-MM-DD, e.g. '2026-10-06'. Omit for the nearest expiry on or after today (IST); an expiry that has already settled is never picked by default.

`get_pcr_trend`Pro

Get PCR trend

Put-Call Ratio (OI & volume) daily trend, with the latest value, min/max, rising/falling read and a bullish/bearish/neutral bias label.

symbolrequired: F&O underlying. Index options: NIFTY, BANKNIFTY, FINNIFTY, MIDCPNIFTY, NIFTYNXT50, SENSEX. Stock options use the NSE symbol, e.g. RELIANCE.
daysoptional: Calendar days of daily history (1-365).

`get_gex`Pro

Get GEX

Gamma exposure: net GEX (Rs per 1% spot move, with a ₹ crore convenience field), gamma-flip level, and the largest positive / negative per-strike GEX clusters. GEX > 0 = dealers long gamma (pinning, mean-reverting); GEX < 0 = short gamma (moves amplified).

symbolrequired: F&O underlying. Index options: NIFTY, BANKNIFTY, FINNIFTY, MIDCPNIFTY, NIFTYNXT50, SENSEX. Stock options use the NSE symbol, e.g. RELIANCE.
expiryoptional: Option expiry date as YYYY-MM-DD, e.g. '2026-10-06'. Omit for the nearest expiry on or after today (IST); an expiry that has already settled is never picked by default.

`get_fii_derivative_positioning`Pro

Get FII derivative positioning

FII derivatives positioning from NSE participant-wise open interest: index-futures long/short contracts with a net-long/short read, total F&O long minus short (in CONTRACTS, not rupees), the full participant OI breakdown, and the cash-market net flow (₹ crore) alongside.

daysoptional: Calendar days of daily history (1-365).

`get_india_vix`Free

Get india VIX

India VIX (NIFTY implied-volatility index) end-of-day series and latest reading, with 1-day change and 5-/20-session change in points.

daysoptional: Calendar days of daily closes in series (1-3650). The 5- and 20-session trends are computed independently of this window.

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Derivatives

get_options_analyticsPro

get_option_chainPro

get_max_painPro

get_oi_buildupPro

get_pcr_trendPro

get_gexPro

get_fii_derivative_positioningPro

get_india_vixFree

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