Capital.com MCP Server

This is a Model Context Protocol (MCP) server that exposes the Capital.com trading API as tools that can be used by Amazon Q, Claude Desktop, and other LLMs that support the MCP protocol.

Available Tools

The following tools are exposed by the MCP server:

• authenticate: Authenticate with Capital.com API
• get_account_info: Get account information
• search_markets: Search for markets (e.g., EURUSD, AAPL)
• get_prices: Get prices for a specific instrument
• get_positions: Get all open positions
• create_position: Create a new trading position
• close_position: Close an open position
• update_position: Update an existing position (stop loss, take profit)
• get_watchlists: Get all watchlists

Configuration

Required Environment Variables

The MCP server requires the following environment variables:

• CAPITAL_BASE_URL: The Capital.com API base URL (e.g., https://demo-api-capital.backend-capital.com)
• CAPITAL_API_KEY: Your Capital.com API key
• CAPITAL_PASSWORD: Your Capital.com password
• CAPITAL_IDENTIFIER: Your Capital.com email/identifier

Optional Environment Variables

• CAPITAL_MCP_DEBUG: Set to 1 to enable debug logging
• FASTMCP_LOG_LEVEL: Set to DEBUG, INFO, WARNING, ERROR, or CRITICAL to control logging level

Running Manually

You can run the MCP server manually with various options:

capital-com-mcp-server --help

Available options:

• --sse: Use SSE transport
• --port PORT: Port to run the server on (default: 8080)
• --debug: Enable debug logging
• --log-dir LOG_DIR: Directory to store log files

Example Usage

Searching for Markets

You: Search for Apple stock on Capital.com

AI: I'll search for Apple stock on Capital.com for you.

[Uses capital-com-mcp-server___search_markets tool]

I found Apple Inc. (AAPL) on Capital.com. Here are the details:
- Epic: AAPL
- Market name: Apple Inc.
- Current bid price: $184.25
- Current ask price: $184.30
- Market status: OPEN

Getting Account Information

You: What's my account balance on Capital.com?

AI: Let me check your Capital.com account information.

[Uses capital-com-mcp-server___get_account_info tool]

Your Capital.com account information:
- Account ID: ABC123456
- Account type: Demo
- Currency: USD
- Balance: $10,000.00
- Available funds: $9,500.00
- Margin used: $500.00

Creating a Position

You: Buy 10 shares of Apple stock

AI: I'll create a buy position for Apple stock on Capital.com.

[Uses capital-com-mcp-server___create_position tool]

Successfully created a BUY position for Apple Inc. (AAPL):
- Deal ID: DEF789012
- Size: 10 shares
- Opening price: $184.30
- Position status: OPEN

Prerequisites for using with LLMs

Make sure you have uv installed on your system:

curl -LsSf https://astral.sh/uv/install.sh | sh

Using with Amazon Q

1. Create an mcp.json configuration file in your Amazon Q configuration directory (~/.aws/amazonq/mcp.json):

   {
     "mcpServers": {
       "capital-com-mcp-server": {
         "command": "uvx",
         "args": ["capital-com-mcp-server"],
         "env": {
           "CAPITAL_BASE_URL": "https://demo-api-capital.backend-capital.com",
           "CAPITAL_API_KEY": "your_api_key_here",
           "CAPITAL_PASSWORD": "your_password_here",
           "CAPITAL_IDENTIFIER": "your_email@example.com",
           "FASTMCP_LOG_LEVEL": "ERROR"
         }
       }
     }
   }
   

2. Run Amazon Q with:

   q chat
   

3. Amazon Q will automatically start the MCP server and connect to it.

Using with Claude Desktop

1. In Claude Desktop, go to Settings > Developer section and click on "Edit Config"

2. This will open the configuration file. Add the following to the JSON:

   {
     "mcpServers": {
       "capital-com-mcp-server": {
         "command": "uvx",
         "args": ["capital-com-mcp-server"],
         "env": {
           "CAPITAL_BASE_URL": "https://demo-api-capital.backend-capital.com",
           "CAPITAL_API_KEY": "your_api_key_here",
           "CAPITAL_PASSWORD": "your_password_here",
           "CAPITAL_IDENTIFIER": "your_email@example.com",
           "FASTMCP_LOG_LEVEL": "ERROR"
         }
       }
     }
   }
   

Resources

• Capital.com API Documentation
• MCP Documentation