This is a teaching project from AI Castle's OpenAI Agent School course, deployed as an MCP server through Smithery. It fetches stock prices and market data for symbols across global exchanges. The repository includes multiple branches covering different educational modules: a render chat implementation, the stock price fetching functionality, and fine tuning examples. It's primarily a learning resource demonstrating how to build agent tools rather than a production-ready financial data service. If you're working through OpenAI agent tutorials or want to see a straightforward example of wrapping market data APIs into an MCP interface, this shows the pattern. The Korean language course materials are available as an ebook at the project site.