Chat GPT

Light Horse connects to ChatGPT through the Model Context Protocol (MCP). Once set up, you can manage your brokerage account, check positions, and place trades directly from ChatGPT.

Create the App

Open Settings → Apps and click Create App. If you don't see the Apps option in ChatGPT Settings, you need to enable Developer mode first. Go to Settings → Apps → Advanced Settings and turn on Developer mode, then reload the page. Fill in the following:

• App name: anything you like, for example Light Horse
• MCP Server URL: https://portal.lighthorse.io/mcp
• Authentication: oAuth

Save the app. ChatGPT will open a browser window and ask you to authorize access to your Light Horse account via OAuth. If your browser is already authenticated, it will automatically redirect back so that you don't even see the login window.

Start Trading

Once connected, ask ChatGPT anything about your account. For example:

• “Deposit a $1000 and invest it to SPY please.”
• “How is my Light Horse portfolio doing today?”
• “Place a limit order for 10 shares of AAPL at $200.”
• “Show me my latest tax form.”