InsiderCat MCP

Provides congressional trading, corporate insider trading, politician portfolio, stock ownership, and market sentiment data for research, monitoring, and AI-agent workflows. It allows agents to investigate U.S. politician trades, compare holdings, find insider activity, and integrate disclosure-derived data into dashboards or alerts.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

Vendor evidenceStreamable HTTPOAuth sign-inEndpoint checked 2026-11-01Operated by InsiderCat

You need:MCP access via API key or OAuth requires an active API & MCP plan.

MCP endpoint (Streamable HTTP)

https://insidercat.com/api/v1/mcp

Vendor documentation

What you can do with it

Build a daily monitor for disclosed congressional trades by ticker, party, chamber, or politician.
Compare portfolio holdings or performance for members of Congress and curated public portfolios.
Retrieve insider trades and summarize buy/sell activity for a stock.
Let an AI assistant call typed tools through MCP instead of scraping the website.

Source and maintenance

Vendor evidenceRegistry 1.0.1

mcp-registry: com.insidercat/insidercat@1.0.1 Project website

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 146 ms
95th percentile latency: 146 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 1, 2026, 7:46 AM UTC · probe · passed · 146 ms · metadata changed · refuses unauthenticated initialize (HTTP 401)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http insidercat-mcp https://insidercat.com/api/v1/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add insidercat-mcp --url https://insidercat.com/api/v1/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable insidercat-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "insidercat-mcp": {
      "url": "https://insidercat.com/api/v1/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "insidercat-mcp": {
      "type": "streamableHttp",
      "url": "https://insidercat.com/api/v1/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start insidercat-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "insidercat-mcp": {
      "type": "http",
      "url": "https://insidercat.com/api/v1/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http insidercat-mcp https://insidercat.com/api/v1/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "insidercat-mcp": {
      "url": "https://insidercat.com/api/v1/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "insidercat-mcp": {
      "serverUrl": "https://insidercat.com/api/v1/mcp"
    }
  }
}

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