AI Agent: Stock & Crypto Chart Analyst

Unlock Actionable Trading Insights with this AI Agent

This n8n workflow acts as an AI-powered backend, ideal for services like Chrome extensions or custom trading tools. It receives a base64 encoded image of a financial chart (stock or crypto), sends it to OpenAI's GPT-4o-mini model for analysis, and returns a technical breakdown and trend forecast. The key? All insights are phrased in extremely simple, "infant language," making complex financial concepts accessible to absolute beginners.

Key Features & Benefits

• AI-Powered Chart Analysis: Leverages OpenAI's vision-capable GPT-4o-mini to interpret intricate financial charts from images.
• Ultra-Simplified Insights: Translates complex technical indicators and market movements into plain, easy-to-grasp language suitable for novice traders.
• Webhook Ready: Trigger the analysis with a simple POST request carrying the base64 image data—perfect for integrating with browser extensions or other frontends.
• Beginner-Focused Prompt: The AI is specifically instructed to explain concepts as if to an infant, ensuring maximum clarity. (Prompt is customizable.)
• Built-in Disclaimer: The AI prompt includes instructions to warn users that its analysis is not binding financial advice.
• Accelerate Learning & Decisions: Provides rapid, AI-driven perspectives to help beginners understand charts and supplement their trading strategies.

• An n8n instance (Cloud or self-hosted).
• OpenAI API Key with access to GPT-4o-mini (or a similar vision-capable model).
• A method to send a POST request with a base64 encoded image string (e.g., a Chrome extension, script, or frontend application).

1. Download the n8n workflow JSON file.
2. Import the workflow into your n8n instance.
3. Configure the 'OpenAI' node: Enter your OpenAI API Key. Ensure the selected model (gpt-4o-mini by default) is correct and supports image analysis.
4. The 'OpenAI' node is configured for base64 image input (inputType: "base64"). Ensure the POST request to the 'Webhook' node sends the base64 encoded image string. The node expects this data from the previous node's output. For example:
   • If sending JSON like {"myImage": "base64string..."} to the webhook, you'll need to set the 'Image (Base64)' field (or equivalent input parameter for image data) in the OpenAI node to an expression like ={{ $json.body.myImage }}.
   • If sending raw image data (e.g., image/png) directly in the POST request body to the webhook, n8n might make it available via an expression like ={{ $binary.data.data }}. Check n8n's binary data handling for webhooks.
   • Verify this mapping between the webhook's output and the OpenAI node's image input field is correct.
5. (Optional) Customize the AI's instructions in the 'Text' parameter of the 'OpenAI' node. The current prompt (also viewable in 'Sticky Note1') guides the AI to explain financial concepts in very simple terms and include a disclaimer.
6. Take note of the Webhook URL provided by the 'Webhook' node (Test URL for testing, Production URL for live use). You will send your POST requests containing the image data to this URL.
7. The 'Respond to Webhook' node is configured to return the AI's analysis using the expression ={{ $json.content }}. This implies the OpenAI node's textual output is available in a field named content. Verify this matches your OpenAI node version's output structure.
8. Activate the workflow.