com.xoomarPublished by xoomar.comOfficial publisherv0.1.11Updated Oct 24, 2026
Free US market data as tools: SEC filings, insiders, short interest, 13F, COT, Fed liquidity.
XOOMAR market data gives an assistant 26 tools over free US market datasets: SEC filings, insiders, short interest, 13F holdings, COT, Fed liquidity and crypto.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/com.xoomar%2Fxoomar-mcp/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"xoomar-market-data": {
"type": "http",
"url": "https://xoomar.com/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.
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 <key> or X-API-Key with a free account key for 30 requests a minute; without one the limit is 10 a minute per IP. Keyless and free-key requests return up to six months of history.
Local, over stdio: Claude Desktop (claude_desktop_config.json), Claude Code, Cursor, Windsurf and any other MCP client that launches stdio servers:
Claude Code, one line:
As a library (the hosted endpoint is built this way):
Optional environment for the stdio bin: XOOMAR_API_KEY (a free account key from https://xoomar.com/signup raises the limit from 10 to 30 requests a minute; keyless and free-key requests return up to six months of history), XOOMAR_MAX_ROWS (rows per tool result, default 200).
Every result carries updatedAt, source (who publishes the data: FINRA, the SEC, the CFTC, the exchange), sourceAttribution (the credit line to show with it) 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".
Listed in the official MCP registry as com.xoomar/xoomar-mcp, on npm as xoomar-mcp, and on mcpservers.org.
When you republish the data, credit XOOMAR with a visible link to the dataset page on xoomar.com, together with the result's sourceAttribution line. What you may do with the data is set out at https://xoomar.com/terms.
Apache-2.0 for this code, XOOMAR. The license covers the code only, not the data.
Source: README.md at commit 9925724
FINRA 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 settlement's highest days-to-cover names.
limitsymbolFINRA daily short sale 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 select the window, up to 5,000 days) or the latest day's largest short volumes.
todaysfromsymbolSEC 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 largest fails by value.
tofromlimitsymbolSEC Form 4 insider trades
Insider transactions from SEC Form 4: insider name and title, transaction code, shares, price, value, date. History for a ticker (from, to and limit select the window, up to 2,000 rows) or the latest trades across companies (type buys for open-market purchases, sells for sales).
tofromtypelimittickerwindowInsider cluster buying
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.
dayslimitminUsdtickerminInsidersRegulation SHO threshold securities
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.
datelimitmarketsymbolSEC Form 144 notices of proposed sale
Form 144 notices: an affiliate's planned sale of restricted or control stock (seller, shares, approximate market value, planned date), filed before the trade.
dayssymbolSchedule 13D and 13G holders
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.
daysformsortsymbol13F institutional holders of a stock
Which tracked 13F managers (Berkshire, Bridgewater, Citadel, Renaissance and others) held a ticker at their latest quarterly filing: shares, value, share of portfolio, change.
tickerrequiredA tracked manager's 13F portfolio
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.
slugrequiredCompany financials from SEC XBRL
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.
symbolrequiredSEC 8-K material events
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.
daysitemtickerEarnings calendar (8-K Item 2.02)
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 until the company confirms it). 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.
tofromlimitstatustickerCFTC Commitments of Traders
Weekly CFTC positioning: the latest report across all tracked markets, or one market's history by slug (e.g. gold, bitcoin, euro-fx, e-mini-s-p-500-stock-index, 10-year-u-s-treasury-notes-chicago-board-of-trade; the latest report lists every slug): open interest and long/short by trader category.
limitmarketPerpetual futures funding rates
Current perpetual funding rates on Binance, Bybit, OKX, Hyperliquid and Kraken for tracked crypto symbols (hourly venues shown as the 8-hour equivalent), or one symbol's history by slug (e.g. btc, eth, sol).
slugFed liquidity
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).
limitseriesCentral bank policy rates
Central bank policy rates for 38 economies with a current series: the current table, or one country code's history (e.g. us, xm for the euro area, jp, gb).
countryUS macro series
US Treasury yield curve points, curve spreads and stablecoin supply as daily series. Filter by series name and date range.
tofromseriesUS Treasury auctions
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.
tofromtermtypelimitupcomingUS economic calendar
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.
tofromimportanceSEC Form D private placements
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.
cikdayssortfundsIPO pipeline
S-1 and F-1 registration statements, 424B4 final prospectuses, EFFECT notices and RW withdrawals from EDGAR, with the filer's listing status.
newdaysformBitcoin held by public companies
Bitcoin holdings of public companies from their own XBRL filings: coins, fair value, cost basis, as of the filing period.
Takes no parameters.
US federal contract actions
Largest US federal contract actions from USAspending, optionally summed by listed parent company (by=ticker) or filtered to one ticker.
bydayslistedtickerCrypto market data
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.
slugdatasetrequiredXOOMAR API reference
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.
Takes no parameters.
100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
{ "mcpServers": { "xoomar": { "command": "npx", "args": ["-y", "xoomar-mcp"] } }}claude mcp add xoomar -- npx -y xoomar-mcpimport { buildServer } from "xoomar-mcp";const server = buildServer({ apiKey: "xm_live_...", maxRows: 100 }); // an McpServer with the 26 tools; connect any transportnpm installnpm test # builds, then talks to the server over stdio (one test hits the live API)