XOOMAR market data

Free US market data from primary sources as 26 tools: SEC filings and insider trades, earnings calendar, FINRA short interest and short volume, 13F holdings…

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What it can do

  • Short Interest: Short interest for a US stock: shares short, average daily volume, days to cover, change, per FINRA settlement date (twice a month), newest first. Without a symbol: the latest settleme
  • Short Volume: Daily short sale volume and total volume per symbol from FINRA's Reg SHO files since August 2021, with the short share of volume. History for a symbol (oldest first; from, to and limit s
  • Fails To Deliver: SEC fails-to-deliver quantity and price by settlement date for a symbol since January 2010 (from, to and limit select the window, up to 5,000 dates), or the latest settlement's large

What data it sees

Do you need an account

No: the server works without sign-in

Free US market data from primary sources as 26 tools: SEC filings and insider trades, earnings calendar, FINRA short interest and short volume, 13F holdings, company financials, CFTC COT, ETF flows, crypto funding and liquidations, Fed liquidity, Treasury auctions, the economic calendar. 32 datasets, no key needed (30 requests a minute; a free key gives 120).

How to connect

How to connect XOOMAR market data to Claude

The server address to paste into Claude settings:

https://xoomar-mcp--xoomar.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect XOOMAR market data to ChatGPT

The server address to paste into ChatGPT settings:

https://xoomar-mcp--xoomar.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect XOOMAR market data to Cursor

The server address to paste into Cursor settings:

https://xoomar-mcp--xoomar.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (26)

Raw names from tools/list. Only developers need these.

short_interestShort interest for a US stock: shares short, average daily volume, days to cover, change, per FINRA settlement date (twice a month), newest first. Without a symbol: the latest settlement's highest days-to-cover names.
short_volumeDaily short sale volume and total volume per symbol from FINRA's Reg SHO files since August 2021, with the short share of volume. History for a symbol (oldest first; from, to and limit select the window, up to 5,000 days) or the latest day's largest short volumes.
fails_to_deliverSEC fails-to-deliver quantity and price by settlement date for a symbol since January 2010 (from, to and limit select the window, up to 5,000 dates), or the latest settlement's largest fails by value.
insider_tradesInsider transactions from SEC Form 4: insider name and title, transaction code, shares, price, value, date. History for a ticker from filings since 2020 (from, to and limit select the window, up to 2,000 rows) or the latest trades across companies (type P for open-market purchases, S for sales).
insider_clustersCompanies where several different insiders bought their own stock on the open market within a window (Form 4 transaction code P only): distinct buyers with titles, trades, combined value, first and latest trade dates. Default: three or more insiders in 30 days, sorted by number of insiders then value. Use ticker to check one company.
threshold_listReg SHO threshold lists from the Nasdaq and Cboe daily files since 2022: securities whose fails to deliver stayed above the threshold for five settlement days. One date (default the newest), one symbol's days on the list, or one listing market.
planned_insider_salesForm 144 notices: an affiliate's planned sale of restricted or control stock (seller, shares, approximate market value, planned date), filed before the trade.
large_holdersHolders above 5% from Schedule 13D (active) and 13G (passive) cover pages: holder, shares, percent of class, filing date. For a symbol or the latest filings.
fund_holdersWhich tracked 13F managers (Berkshire, Bridgewater, Citadel, Renaissance and others) held a ticker at their latest quarterly filing: shares, value, share of portfolio, change.
fund_portfolioThe latest 13F portfolio of one tracked manager by slug, e.g. berkshire-hathaway, bridgewater, citadel-advisors, renaissance-technologies. Positions with value, shares and share of portfolio.
company_financialsQuarterly revenue, net income and diluted EPS (calendar quarters, fourth quarter derived from the annual report), annual revenue, net income, operating cash flow, capex, buybacks and dividends, and the latest balance sheet instants, from the company's own XBRL filings.
corporate_events8-K current reports with their item numbers (2.02 earnings, 5.02 officer changes, 1.01 agreements and so on), for a ticker or the latest across companies.
earnings_calendarWhen US companies report results, from their own 8-K filings. With a ticker: every reported date since 2023 and the next expected date (an estimate: last year's date plus 52 weeks, with the basis). Without: the calendar window (default today to 14 days ahead; from and to open any window up to 120 days; status reported or estimated). Dates only, no EPS or consensus.
cot_positioningWeekly CFTC positioning: the latest report across all tracked markets, or one market's history (e.g. gold, crude-oil, sp500, bitcoin, euro-fx, 10-year-note): open interest and long/short by trader category.
funding_ratesCurrent perpetual funding rates on Binance, Bybit, OKX, Hyperliquid, Kraken and BitMEX for tracked crypto symbols (hourly venues shown as the 8-hour equivalent), or one symbol's history by slug (e.g. btc, eth, sol).
fed_liquidityWeekly US net liquidity (Fed balance sheet minus the Treasury General Account minus reverse repo) with its components, oldest first, or one FRED series (WALCL, WRESBAL, RRPONTSYD, WTREGEN, SOFR, EFFR, IORB, WSHOSHO).
policy_ratesPolicy rates for 49 economies: the current table, or one country code's history (e.g. us, eu, jp, gb).
macro_seriesUS Treasury yield curve points, curve spreads and stablecoin supply as daily series. Filter by series name and date range.
treasury_auctionsTreasury auction results and calendar since 2010 from TreasuryDirect: security type and term, auction and issue dates, offering amount, high yield or discount rate, bid-to-cover, dealer, direct and indirect allotments. Default: coupon auctions (notes, bonds, TIPS, FRNs); upcoming=true lists announced auctions not yet run.
economic_calendarScheduled US releases from the agencies' own calendars (CPI, PPI, payrolls, weekly jobless claims, PCE, GDP, retail sales, housing, durable goods, industrial production, trade, FOMC decisions and minutes, Beige Book), with the actual and previous print filled after release and a unit field. No consensus figures. Default window: last 7 days to next 30.
private_placementsForm D notices of exempt offerings: issuer, amount sold, amount offered, investors, whether it is a pooled fund. Largest raises in a window, one issuer by CIK, or the most recent filings.
ipo_pipelineS-1 and F-1 registration statements, 424B4 final prospectuses, EFFECT notices and RW withdrawals from EDGAR, with the filer's listing status.
bitcoin_treasuriesBitcoin holdings of public companies from their own XBRL filings: coins, fair value, cost basis, as of the filing period.
federal_contractsLargest US federal contract actions from USAspending, optionally summed by listed parent company (by=ticker) or filtered to one ticker.
crypto_marketOpen interest history for a symbol slug, recent liquidations across exchanges, Deribit options metrics (put/call, max pain, DVOL) for BTC or ETH, or Hyperliquid whale positions.
api_referenceHow the underlying free API works: endpoints, parameters, rate limits, CSV downloads and the attribution terms. Use when a tool here does not cover the exact query.