AI-Powered Technical Analysis with Custom GPT

Connect ChatGPT to FastAPI-MCP servers for advanced technical analysis - integrate with Yahoo Finance, Finta, Pandas, and Gemini Vision API for automated analysis and reports.

• Try Technical Analysis GPT
• MCP Server & User Interfaces

What This GPT Does

This Custom GPT provides advanced technical analysis capabilities:

• Fetches live price data from Yahoo Finance via a custom API
• Calculates technical indicators using the Finta package
• Converts daily OHLCV to weekly (Mon–Fri) using pandas.resample()
• Generates advanced charts (e.g. price + EMA, RSI, ROC, volume overlays) via Matplotlib
• Uses Gemini Vision API to analyze chart patterns
• Compiles PDF and HTML reports with embedded visuals and tables
• Returns sharable report URLs

How to Use

Ask ChatGPT to guide. Starter prompts also built in. Some tips:

• For Technical Analysis
  • Specify the Yahoo symbol (e.g., GOOG).
  • Mention time ranges naturally: "last 3 months for daily, 1 year for weekly".
  • Always request results in table format or table format inside code block for easy Excel copy-paste.

How It Works

A multi-layered architecture with integrated FastAPI-MCP servers, connected to ChatGPT via Custom Actions and OpenAPI JSON schema:

• Technical Analysis Execution
  • MCP server runs a FastAPI Technical Analysis web service available as MCP Server.
  • Pulls daily data from a second FastAPI Yahoo Finance web service.
  • Converts daily to weekly using Pandas resample().
  • Computes indicators using Finta.
  • Generates dynamic charts via Matplotlib.
  • Sends charts + data to Gemini Vision API.
  • Markdown responses (with charts & tables) returned.
• Report Generation
  • This is done by the 3rd FastAPI server for converting markdown to PDF and HTML.
  • Markdown with embedded images are passed to this server.
  • Report saved as PDF & HTML and URLs returned to ChatGPT.
• Tech Stack
  • fastapi-mcp python package to expose FastAPI servers as MCP servers.
  • FastAPI, Pandas, Matplotlib, Finta, Gemini API.
  • Static file serving for downloadable reports.

How to Replicate

• 1. Deploy Backend Servers
  • Yahoo Finance data API (prices & financials).
  • Markdown to PDF Server: Converts Markdown reports to PDF/HTML.
  • Technical Analysis Server:
    • Yahoo Finance and Technical analysis FastAPIs already mounted with MCP.
    • Update Yahoo finance API endpoint in Technical Analysis server.
• 2. Setup Custom GPT
  • Copy the Custom Action OpenAPI JSON Schema into new Custom GPT's custom actions.
  • That's it! Your GPT is ready to use.

Resources & Examples

• Custom GPT JSON Schema: OpenAPI Schema for connecting Custom GPT to backend Technical Analysis FastAPI-MCP Server. Available in docs folder.
• MCP Server - Technical Analysis: Detailed information about the Technical Analysis MCP server including build guides and source code.
• MCP Server - Yahoo Finance: Detailed information about the Yahoo Finance Data Pull MCP server including build guides and source code.
• Markdown to PDF FastAPI: FastAPI server for converting markdown content to PDF and HTML reports.
• Backend Process Flow: High level view of backend API call flows.

This custom GPT leverages ChatGPT's capabilities to provide an intuitive interface for technical analysis. It simplifies complex analysis tasks by allowing natural language interaction with powerful Python-based technical analysis tools.