Mmcp.market

XOOMAR market data MCP server

by xoomar.com·com.xoomar/xoomar-mcp·v0.1.7
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Free US market data as tools: SEC filings, insiders, short interest, 13F, COT, ETF flows, liquidity.

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full report

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XOOMAR market data tools (26)

write = sends, deletes, buys or posts
  • api_referenceFree

    How 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.

  • bitcoin_treasuriesFree

    Bitcoin holdings of public companies from their own XBRL filings: coins, fair value, cost basis, as of the filing period.

  • company_financialsFree

    Quarterly 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_eventsFree

    8-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.

  • cot_positioningFree

    Weekly 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.

  • crypto_marketFree

    Open 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.

  • earnings_calendarFree

    When 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.

  • economic_calendarFree

    Scheduled 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.

  • fails_to_deliverFree

    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 largest fails by value.

  • fed_liquidityFree

    Weekly 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).

  • federal_contractsFree

    Largest US federal contract actions from USAspending, optionally summed by listed parent company (by=ticker) or filtered to one ticker.

  • fund_holdersFree

    Which tracked 13F managers (Berkshire, Bridgewater, Citadel, Renaissance and others) held a ticker at their latest quarterly filing: shares, value, share of portfolio, change.

  • fund_portfolioFree

    The 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.

  • funding_ratesFree

    Current 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).

  • insider_clustersFree

    Companies 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.

  • insider_tradesFree

    Insider 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).

  • ipo_pipelineFree

    S-1 and F-1 registration statements, 424B4 final prospectuses, EFFECT notices and RW withdrawals from EDGAR, with the filer's listing status.

  • large_holdersFree

    Holders 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.

  • macro_seriesFree

    US Treasury yield curve points, curve spreads and stablecoin supply as daily series. Filter by series name and date range.

  • planned_insider_salesFree

    Form 144 notices: an affiliate's planned sale of restricted or control stock (seller, shares, approximate market value, planned date), filed before the trade.

  • policy_ratesFree

    Policy rates for 49 economies: the current table, or one country code's history (e.g. us, eu, jp, gb).

  • private_placementsFree

    Form 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.

  • short_interestFree

    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 settlement's highest days-to-cover names.

  • short_volumeFree

    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 select the window, up to 5,000 days) or the latest day's largest short volumes.

  • threshold_listFree

    Reg 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.

  • treasury_auctionsFree

    Treasury 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.

Public scan report

scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

no findings
  • Code scan6 source files scanned25/25
  • Live reliabilityremote reachable in 1394ms20/20
  • Tool poisoning26 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 2 days ago15/15
  • Maintainer identitynamespace and repository owner differ; website matches verified namespace5/10
Overall 90/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

What the publisher says

From the XOOMAR market data repository's README, as published. We do not edit it. Read it on GitHub

xoomar-mcp

An MCP server that gives AI agents the XOOMAR free market data API as tools: 26 tools over 31 datasets built from primary sources (SEC EDGAR and XBRL, FINRA, CFTC, the Federal Reserve, USAspending, exchange APIs). No key needed to start.

Use it

Hosted, nothing to install: https://xoomar.com/mcp (Streamable HTTP). Add it as a remote MCP server or custom connector in Claude.ai, Claude Code (claude mcp add --transport http xoomar https://xoomar.com/mcp), ChatGPT, Cursor or any client that connects by URL. Send Authorization: Bearer or X-API-Key with a free account key for 120 requests a minute; without one the limit is 30 a minute per IP.

Local, over stdio: Claude Desktop (claudedesktopconfig.json), Claude Code, Cursor, Windsurf and any other MCP client that launches stdio servers:

{
  "mcpServers": {
    "xoomar": {
      "command": "npx",
      "args": ["-y", "xoomar-mcp"]
    }
  }
}

Claude Code, one line:

claude mcp add xoomar -- npx -y xoomar-mcp

As a library (the hosted endpoint is built this way):

import { buildServer } from "xoomar-mcp";
const server = buildServer({ apiKey: "xm_live_...", maxRows: 100 }); // an McpServer with the 26 tools; connect any transport

Optional environment for the stdio bin: XOOMARAPIKEY (a free account key from https://xoomar.com/signup raises the limit from 30 to 120 requests a minute), XOOMARMAXROWS (rows per tool result, default 200).

Tools

Every result carries updatedAt, source and the attribution line. Ask things like "How has GME short interest moved this year?", "Which tracked funds bought NVDA last quarter?", "What is Fed net liquidity doing?", "Show open-market insider purchases in the last 7 days".

Where it is listed

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Grade history

  • 2026-09-19restoreB → Ascore 90

Install directly

claude mcp add --transport http xoomar-mcp https://xoomar.com/mcp
Add to Cursor

XOOMAR market data: common questions

Is XOOMAR market data MCP server safe?
Yes, by our scan: it is graded A (90/100). Read the XOOMAR market data safety report
How do I install XOOMAR market data?
It runs remotely at xoomar.com. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
Does XOOMAR market data need an API key?
Yes. The registry entry asks for XOOMAR_API_KEY.
Is XOOMAR market data maintained?
The last commit was 3 days ago (2026-09-17). The latest release is v0.1.7.
Is XOOMAR market data up?
100% of our last 5 checks got an answer. We check remote servers about four times a day.

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