How do I install XOOMAR Market Data?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does XOOMAR Market Data need an API key?

The publisher lists these environment variables: XOOMAR_API_KEY, XOOMAR_MAX_ROWS.

What transport does XOOMAR Market Data use?

XOOMAR Market Data is reached over HTTP.

When was XOOMAR Market Data last checked?

Last checked 2026-11-08. Free US market data as tools: SEC filings, insiders, short interest, 13F, COT, Fed liquidity.

XOOMAR Market Data MCP server

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Add to Cursor Add in Claude Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Server URL

https://xoomar.com/mcp

Credentials from the publisher

XOOMAR_API_KEY — Optional free account key from https://xoomar.com/signup: 30 requests a minute instead of 10.
XOOMAR_MAX_ROWS — Rows per tool result (default 200).

The Claude button above opens Claude with the name and URL filled in. You still confirm it there.

shClaude Code

1claude mcp add --transport http com.xoomar-xoomar-mcp https://xoomar.com/mcp

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "com.xoomar-xoomar-mcp": {4      "command": "npx",5      "args": [6        "-y",7        "mcp-remote",8        "https://xoomar.com/mcp"9      ]10    }11  }12}

claude_desktop_config.json

Remote · HTTPPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Remote

Transport: http
Version: 0.1.11

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

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 <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:

{
  "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: 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).

Tools

Tool	What it returns
`short_interest`	FINRA short interest with days to cover, per settlement date
`short_volume`	FINRA daily short sale volume and the short share of volume, since 2021
`fails_to_deliver`	SEC fails to deliver by settlement date, since 2010
`insider_trades`	SEC Form 4 insider transactions
`insider_clusters`	Companies where several insiders bought on the open market in a window
`threshold_list`	Reg SHO threshold securities lists (Nasdaq and Cboe, since 2022)
`planned_insider_sales`	SEC Form 144 notices of proposed sale
`large_holders`	Schedule 13D and 13G holders above 5%
`fund_holders`	Which tracked 13F managers hold a ticker
`fund_portfolio`	One tracked manager's latest 13F portfolio
`company_financials`	Quarterly and annual figures and the balance sheet from XBRL
`earnings_calendar`	Reported earnings dates from 8-K Item 2.02 filings and the next expected date per company (estimated, with its basis)
`corporate_events`	8-K material events by item
`cot_positioning`	CFTC Commitments of Traders, latest or one market's history
`funding_rates`	Perpetual funding on Binance, Bybit, OKX, Hyperliquid and Kraken (BitMEX history to 16 Sep 2026, when it closed its swaps)
`fed_liquidity`	Net liquidity and its components, or one FRED series
`policy_rates`	Central bank policy rates, 38 economies with a current series
`macro_series`	US yield curve, spreads, stablecoin supply
`treasury_auctions`	Treasury auction results and calendar since 2010

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".

Where it is listed

Listed in the official MCP registry as com.xoomar/xoomar-mcp, on npm as xoomar-mcp, and on mcpservers.org.

Data terms

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.

Development

npm install
npm test        # builds, then talks to the server over stdio (one test hits the live API)

Apache-2.0 for this code, XOOMAR. The license covers the code only, not the data.

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install XOOMAR Market Data?

Does XOOMAR Market Data need an API key?

What transport does XOOMAR Market Data use?

When was XOOMAR Market Data last checked?

Documentation

xoomar-mcp

Use it

Tools

Where it is listed

Data terms

Development