Which MCP gives NSE F&O open interest and derivatives positioning data?

What does the per-symbol derivatives tool return?

get_derivatives_positioning takes an NSE symbol, ISIN or BSE code for a stock, or a raw underlying name such as NIFTY or BANKNIFTY. It returns NSE’s figures for the latest trading day, from the NSE F&O bhavcopy:

• futures_oi and futures_oi_change: futures open interest and its change from the previous day.
• call_oi and put_oi: open interest summed over call options and over put options.
• pcr: put open interest divided by call open interest. The tool computes it mechanically.
• total_volume: traded volume for the underlying.
• in_ban_list: whether the underlying was in the ban list that day.

What does a real answer look like?

For NIFTY on 28 October 2026, futures open interest was 17,365,465, up 553,410. Call open interest was 226,356,720 and put open interest was 242,641,950, so PCR was 1.07194498136. Total volume was 60,434,866 and the index was not in the ban list. For RELIANCE the same day showed futures open interest of 163,530,500 (up 7,705,000), call open interest of 92,958,500, put open interest of 66,171,000 and PCR of 0.711833775287.

// get_derivatives_positioning · query "NIFTY"
{
  "symbol": "NIFTY",
  "trade_date": "2026-10-28",
  "futures_oi": 17365465,
  "futures_oi_change": 553410,
  "call_oi": 226356720,
  "put_oi": 242641950,
  "pcr": 1.07194498136,
  "total_volume": 60434866,
  "in_ban_list": false
}

// get_derivatives_positioning · query "RELIANCE"
{
  "symbol": "RELIANCE",
  "isin": "INE002A01018",
  "trade_date": "2026-10-28",
  "futures_oi": 163530500,
  "futures_oi_change": 7705000,
  "call_oi": 92958500,
  "put_oi": 66171000,
  "pcr": 0.711833775287,
  "total_volume": 551992,
  "in_ban_list": false
}

What is PCR in the tool output?

The put-call ratio is put open interest divided by call open interest. For NIFTY on 28 October 2026 that is 242,641,950 divided by 226,356,720. DalalOS reports the ratio and the two inputs. It does not read the ratio as a view on the market.

What can I not get from this tool?

How do I get participant-wise F&O open interest?

get_fo_participant_activity returns NSE’s participant table for the whole market. Each row is one trade date and one client type: FII, DII, Pro, Client or TOTAL. A row has an oi block and a volume block, each with long and short counts for index futures, stock futures, and index and stock call and put options, plus totals. The counts are raw. We called it with days=1 on 29 October 2026 and got 10 rows: five client types for each of 27 and 28 October 2026. The FII row for 28 October:

{
  "trade_date": "2026-10-28",
  "client_type": "FII",
  "oi": {
    "fut_idx_long": 35808,
    "fut_idx_short": 270850,
    "opt_idx_call_long": 523927,
    "opt_idx_put_long": 972837,
    "opt_idx_call_short": 838851,
    "opt_idx_put_short": 477895,
    "total_long": 5380761,
    "total_short": 4559272
  }
}

Which stocks are in the F&O ban list?

get_fno_ban_list takes no argument. It returns the ban date and one entry per banned underlying, with the NSE symbol and ISIN. On 29 October 2026 the ban date was 29 October 2026 and two symbols came back: KAYNES and SAIL. The list changes by day. The F&O ban list page on this site shows the same data.

{
  "ban_date": "2026-10-29",
  "count": 2,
  "symbols": [
    { "nse_symbol": "KAYNES", "isin": "INE918Z01012" },
    { "nse_symbol": "SAIL", "isin": "INE114A01011" }
  ]
}

Does it have India VIX?

Yes. get_india_vix returns NSE’s daily India VIX with open, high, low, close, points change and percentage change. We asked for 26 October 2026 onward and got three rows, the latest for 28 October 2026. The close was 17.16 on 26 October, 16.4 on 27 October (change -0.76 points, -4.41%) and 16.25 on 28 October (change -0.16 points, -0.96%). The data was cached on 28 October 2026 at 14:54 UTC.

How do I ask for it?

To set it up, connect your AI, or follow the guide for Claude, ChatGPT or Cursor and other AI tools. The server is at https://mcp.dalalos.in/mcp. The code and docs are public: DalalOS-Indian-Stock-Research on GitHub.

How we checked

On 29 October 2026 we called get_derivatives_positioning for NIFTY and RELIANCE, get_fo_participant_activity with days=1, get_fno_ban_list and get_india_vix on the live server, and read the tool descriptions to confirm what each does and does not return. Figures change every trading day. This is research data, not investment advice, and DalalOS does not rank or rate stocks. Found an error? Email hello@dalalos.in.