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:

• get_account_info: Get account information and balance
• search_markets: Search for markets/instruments (supports both search terms and epic codes)
• get_prices: Get current prices with configurable time resolution (MINUTE, HOUR, DAY, etc.)
• get_historical_prices: Get historical price data with custom time ranges and resolution
• get_positions: Get all open trading positions
• create_position: Create a new trading position (buy/sell) with optional stop loss and take profit
• close_position: Close an open position by deal ID
• update_position: Update position stop loss or take profit levels
• get_watchlists: Get all saved watchlists

✨ Key Features

• Automatic Authentication: Handles login and session token refresh automatically
• Enhanced Search: Search markets by name or use specific epic codes (e.g., "Apple" or "AAPL")
• Multiple Time Resolutions: MINUTE, HOUR, DAY, WEEK for price data
• Robust Error Handling: Built-in retry logic for expired sessions
• No Manual Auth: No separate authentication tool needed - handled behind the scenes

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

Installation & Setup

Install via pip

pip install capital-com-mcp-server

Running Manually

# Run with stdio transport (default)
capital-com-mcp-server

# Run with debug logging
capital-com-mcp-server --debug

# Get help with all options
capital-com-mcp-server --help

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 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 Historical Price Data

You: Show me Tesla's daily price data for the last week

AI: I'll get Tesla's daily price data for you.

[Uses get_prices with epic="TSLA" and resolution="DAY"]

Tesla (TSLA) daily prices:
- Day 1: Open $248.50, Close $252.30, High $254.80, Low $247.90
- Day 2: Open $252.30, Close $249.75, High $253.20, Low $248.40
- Volume and price trends show recent volatility

Getting Account Information

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

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

[Uses 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 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