# Octagon MCP Server (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.

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.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/OctagonAI/octagon-mcp-server |
| GitHub stars | 147 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: octagon-mcp |
| Remote URL | none |
| Needs API key | yes |
| Official | yes |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Finance |
| Latest release | none |
| Last commit | Jul 9, 2026 |

## Install

### Claude Desktop (claude_desktop_config.json)

```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

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

### Cursor (.cursor/mcp.json)

```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)

```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 2026-10-07.

## Environment variables

- `OCTAGON_API_KEY` (secret): Shown in the README's example configuration.

## Tools

- `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

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