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MCP server · Finance and crypto

tradefloor MCP server

by simoncoombes

Let your AI run pretend stock markets, test trading ideas, and see why prices moved.

tradefloor is a pretend stock market that runs on your own computer. You give it a starting point and a list of companies, and it plays out days of prices, buyers and sellers. It is handy if you want to test a trading idea without risking real money.

What is an MCP server? The 30-second version

On its own, your AI can only chat. An MCP server is a small helper program that gives your AI a new skill. This helper connects your AI to tradefloor, the pretend market. So when you ask your AI to test a trading rule or run a market shock, it can actually do it and show you what happened.

What this MCP server does

You ask your AI to run a market test. The AI uses this helper to start up a pretend market with a seed number and a set of companies. The market plays forward day by day, and your trading rule places orders that push prices around. When it finishes, you get numbers back: what the rule made, what it cost, and why prices moved.

What you can do with it

  • Run a trading rule against a pretend market and see what it made
  • Compare several rules over many different markets
  • Fork a running market and change one thing, like a rate rise
  • See why each price moved, broken into twelve factors
  • Place orders one day at a time in a live market session
  • Rewind a market and try a different action
  • Load a packaged shock, like a liquidity crisis, and watch what happens

Try asking your AI

  • “Start a market at seed 7 with 40 random companies and run 10 days.”
  • “Test a momentum rule that buys the top 5 stocks after 1 day and tell me its return and Sharpe.”
  • “Fork this market and raise rates by 2 percent in one branch, then show me where the two branches differ.”
  • “Explain why the price of the first company moved on day 5.”

What it gives back to you

You get back numbers and short summaries in the chat. That could be the return, the Sharpe ratio, the cost of your own trading, or a list of factors behind a price move. It can also answer with a step-by-step readout of what changed between two branches of a market.

Before you start

What you need

  • The tradefloor package installed (pip install "tradefloor[mcp]")
  • The Claude desktop app or another AI tool that supports MCP servers
  • Nothing else. No account and no internet needed.

Good to know

It only makes pretend markets on your own computer, so nothing here touches real money or real accounts.

Install it with your AI

Add tradefloor MCP server to your AI, no technical skills needed

You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.

Sign in to get the install prompt

Members get a ready-made prompt that lets the Claude desktop app check tradefloor MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,609 MCP servers here for you.

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Who it's for

People who want to test trading ideas or study market behavior, like analysts, students, and hobbyist traders, without touching a real brokerage account.

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