SchwabMCP

A Model Context Protocol (MCP) server that provides AI assistants like Claude with secure access to Schwab's trading API. This gem enables natural language interactions with your Schwab brokerage account for retrieving market data, quotes, option chains, account information, and managing trades.

This gem is built on top of the schwab_rb Ruby gem, which provides the underlying Schwab API client functionality.

Add this gem to your application's Gemfile:

bundle add schwab_mcp

Or install it directly:

gem install schwab_mcp

Before using this gem, you'll need:

1. A Schwab Developer account and API credentials
2. Environment variables configured (see Usage section)
3. Valid Schwab API tokens

Dependencies:

• This gem depends on schwab_rb for Schwab API communication
• Ruby 3.1.0 or higher

Create a .env file in your project root with the following required variables:

SCHWAB_API_KEY=your_schwab_api_key
SCHWAB_APP_SECRET=your_schwab_app_secret
SCHWAB_CALLBACK_URI=your_callback_uri
TOKEN_PATH=path/to/your/token.json

Start the server using the provided executable:

bundle exec exe/schwab_mcp

Or use the convenience script:

./start_mcp_server.sh

The gem includes utility scripts for managing Schwab API authentication tokens:

To refresh your existing authentication tokens:

bundle exec exe/schwab_token_refresh

This script will automatically refresh your tokens using the existing token file specified in your TOKEN_PATH environment variable.

To delete existing tokens and start the authentication process fresh:

bundle exec exe/schwab_token_reset

This script will:

1. Delete your existing token file
2. Guide you through the OAuth authentication flow to obtain new tokens

The MCP server provides the following tools for AI assistants:

• Market Data: Get quotes, option chains, price history, and market hours
• Account Management: View account details, balances, and positions
• Order Management: Preview, place, cancel, and replace orders
• Transaction History: Retrieve account transactions and order history
• Market Analysis: Find option strategies and view market movers

Configure Claude Desktop to use this MCP server by adding it to your claude_desktop_config.json.

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

1. Clone the repository
2. Run bundle install to install dependencies
3. Copy .env.example to .env and configure your Schwab API credentials
4. Run tests with bundle exec rspec
5. Start the development server with bundle exec exe/schwab_mcp

Run the test suite:

bundle exec rspec

The project uses RuboCop for code style enforcement:

bundle exec rubocop

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/jwplatta/schwab_mcp. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

1. Fork the repository
2. Create a feature branch (git checkout -b my-new-feature)
3. Make your changes and add tests
4. Ensure all tests pass (bundle exec rspec)
5. Run RuboCop to check code style (bundle exec rubocop)
6. Commit your changes (git commit -am 'Add some feature')
7. Push to the branch (git push origin my-new-feature)
8. Create a new Pull Request

Please ensure your contributions:

• Include appropriate tests
• Follow the existing code style
• Update documentation as needed
• Respect the security considerations for financial API integration

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the SchwabMcp project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.