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Large Language ModelsOpen-Source AIZenn AI/MLPublished: Oct 10, 2026, 22:00 JST

Trading Dojo: MCP gives everyday AI simulated trading tools

Trading Dojo: MCP gives everyday AI simulated trading tools

A developer released Trading Dojo, an open-source MCP system that hands AI agents like Claude Desktop and Antigravity CLI live stock and crypto data plus simulated buy/sell tools. In a demo, the AI researched tokens, flagged HYPE, ran chart analysis, and proposed buying 2 HYPE (about 28,000円分) at a 0.1% fee.

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Context & Analysis

The project emerged from a simple frustration with existing investment apps that push one-way signals rather than letting users discuss strategy with their own AI. By adopting MCP, the developer gives the AI full access to trading tools, so the agent can carry out a multi-step flow from research to chart analysis to portfolio sizing to order execution within a single conversation. Two design turns shaped the build. First, a long holiday showed that stock prices would not move while markets were closed, so crypto support running 24/7 was added to allow testing anytime. Second, after reviewing the API terms of exchanges and brokerages, the developer dropped a central-server plan and moved everything to run locally, which keeps the project free of licensing issues and open source. The development itself used Google's Antigravity IDE with Gemini 3.8 Flash (Medium), and the resulting system runs a Next.js dashboard on localhost that reflects trades in real time.

FAQ
What is Trading Dojo and what does it do?
It is a personal trading simulation system built on Model Context Protocol. It connects to your existing AI agent and lets it fetch live prices, analyze charts, and place simulated buy and sell orders.
Does it risk real money?
No. All trades use virtual simulation money, with an initial balance of 100万円. It also models real-world costs like a 0.1% fee and slippage, so no actual funds are exposed.
What markets does it cover?
It supports Japanese stocks and cryptocurrencies, with both stock and crypto tools listed for searching, pricing, analysis, and trading.

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