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Octagon MCP Server

Octagon MCP Server is an MCP server that provides specialized AI-powered financial research and analysis by integrating with the Octagon Market Intelligence API, enabling users to analyze and extract insights from public filings, earnings calls, financial metrics, stocks & crypto… It has 147 GitHub stars, is released under the MIT license and runs locally with npx -y octagon-mcp.

github.com/OctagonAI/octagon-mcp-server (opens in a new tab)

Data as of from the GitHub API; description from the project's repository. Report an error

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Install Octagon MCP Server

Generated from the server's published package. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "octagon-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "octagon-mcp"
      ],
      "env": {
        "OCTAGON_API_KEY": "your-value"
      }
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --env OCTAGON_API_KEY=your-value --transport stdio octagon-mcp-server -- npx -y octagon-mcp

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "octagon-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "octagon-mcp"
      ],
      "env": {
        "OCTAGON_API_KEY": "your-value"
      }
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "inputs": [
    {
      "type": "promptString",
      "id": "octagon_api_key",
      "description": "OCTAGON_API_KEY",
      "password": true
    }
  ],
  "servers": {
    "octagon-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "octagon-mcp"
      ],
      "env": {
        "OCTAGON_API_KEY": "${input:octagon_api_key}"
      }
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

Environment variables

Variables the server reads at startup.

NameRequiredDescription
OCTAGON_API_KEYsecretNoShown in the README's example configuration.

Tools (3)

Parsed from the Tools section of the README; check the repository for the current list.

  • octagon-prediction-markets-agent

    for updated research reports on each prediction markets

  • prediction_markets_history

    for structured historical market data retrieval

  • octagon-docs-search

    octagon-docs-read, octagon-docs-list, and octagon-docs-refresh

About Octagon MCP Server

The Octagon MCP server provides specialized AI-powered financial research and analysis by integrating with the Octagon Market Intelligence API, enabling users to analyze and extract insights from public filings, earnings calls, financial metrics, stocks & crypto data, stock news, and prediction markets news & research within Claude Desktop and other popular MCP clients.

  • debt
  • earnings-calls
  • equities
  • financial-analysis
  • fundamental-analysis
  • funds
  • indices
  • market-intelligence
  • sec-filings
  • sector-analysis

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FAQ

Octagon MCP Server FAQ

Still curious? Email info@appsgit.com.

How do I install the Octagon MCP Server MCP server?

Add the command npx -y octagon-mcp to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is Octagon MCP Server free?

The server is open source under the MIT license, so running it is free. It needs credentials (OCTAGON_API_KEY) for the service it connects to, which may require a paid account.

Is Octagon MCP Server actively maintained?

The most recent commit was on Jul 9, 2026. appsgit only lists MCP servers with a commit in the last six months.