Short answer
Add Papertrade to ChatGPT as a custom MCP plugin using the server URL, sign in, and ChatGPT can create paper-trading simulators, look up stocks, place orders with virtual money and tell you how it did. Setup takes about two minutes, and nothing ever touches a real brokerage account.
What you need
- A ChatGPT plan and workspace that allow custom MCP servers. They work in the ChatGPT web and desktop apps; on Business and Enterprise an admin may need to add the plugin.
- A free Papertrade account.
Connect Papertrade to ChatGPT
- Open Plugins in ChatGPT (chatgpt.com/plugins), click + and choose Add custom MCP server.
- Name it Papertrade and add a short description. Under Connection, use a public endpoint and paste
https://papertrade.world/api/mcp. - Set Authentication to OAuth. Read the warning, choose I understand and want to continue, then click Create as a plugin.
- Install the new Papertrade plugin. Sign in on the Papertrade page that opens and click Allow.
- Start a new chat, type @, pick Papertrade and ask it to trade.
If Papertrade is listed in ChatGPT's plugin directory where you are, you can install it from there instead of adding it by URL. The full, current steps for every app are in the setup guides.
Prompts to try
Using Papertrade, which stock markets are open right now?
Create a live US simulator in Papertrade called ChatGPT Test with $50,000 on Robinhood.
Buy 10 AAPL with a stop loss 2% below and a target 4% above.
Create a replay of the NSE for last Friday, play it at 30x and trade the opening range on INFY.
How did my ChatGPT Test simulator do? Give me the win rate, fees and net P&L.
What ChatGPT can do with Papertrade
- Check which of the 45 stock markets are open, and search for stocks.
- Create live or replay simulators with any of 172 brokers' fee schedules.
- Place market, limit, stop-market and stop-limit orders, with stop losses, targets and trailing stops.
- Manage a watchlist, cancel orders and close positions.
- Play, pause and speed up market replays (up to 120x).
- Read the results report: net P&L after fees, win rate, profit factor, profitable days and insights.
Tips for better results
- Give ChatGPT explicit rules (position size, stop loss, maximum positions, exit time) instead of asking it to "make money".
- Keep the Papertrade dashboard open in another tab: every order ChatGPT places appears there live, tagged as placed by the AI.
- Live simulators only fill orders while the exchange is open. Outside market hours, use a replay.
- Ask for a report at the end of each session, and judge it over many sessions, not one. See how to judge an AI trader.
Frequently asked questions
- Can ChatGPT trade stocks with real money through Papertrade?
- No. Papertrade only simulates trades with virtual money. It never connects to a real broker, so ChatGPT can't place real orders or move money through it.
- Do I need a paid ChatGPT plan?
- Adding a custom MCP server depends on your ChatGPT plan and workspace settings. Papertrade itself is free.
- Does it work in the ChatGPT mobile app?
- Custom MCP plugins work in the ChatGPT web and desktop apps. Once a plugin is set up, check your ChatGPT app for mobile support.
- Why was my order rejected?
- Live simulators only accept orders while the exchange is open and before the broker's auto square-off time. Replays trade at any time. The rejection message says why.