n8n Workflow: Analyze Blog SEO with AI (GPT-4) and Ethical Scraping

This n8n workflow provides a comprehensive solution for analyzing the SEO of a blog post using AI (specifically GPT-4) and ethically scraping its content. It's designed to automate the process of extracting blog content and then generating an SEO assessment.

What it does

This workflow automates the following steps:

1. Receives a Blog Post URL: It starts by listening for a webhook trigger, expecting a blog post URL as input.
2. Extracts Blog Content: It makes an HTTP request to the provided URL to scrape the content of the blog post.
3. Checks for Successful Scraping: It uses an If node to verify if the HTTP request was successful (i.e., the content was retrieved).
4. Prepares Content for AI Analysis:
   • If the scraping is successful, it processes the raw HTML content, extracting the main text and cleaning it up for AI consumption.
   • It then sets specific fields (like blogContent and blogURL) to be passed to the next steps.
5. Generates SEO Assessment with OpenAI (GPT-4): It sends the cleaned blog content to the OpenAI GPT-4 model with a predefined prompt to generate a detailed SEO assessment.
6. Formats AI Response: The AI-generated assessment is then formatted into Markdown for better readability.
7. Responds to Webhook: Finally, it responds to the initial webhook with the Markdown-formatted SEO assessment.
8. Handles Failed Scraping: If the initial HTTP request to scrape the blog post fails, it directly responds to the webhook with an error message.

Prerequisites/Requirements

To use this workflow, you will need:

• n8n Instance: A running instance of n8n.
• OpenAI API Key: An API key for OpenAI with access to GPT-4. This credential will need to be configured within the OpenAI node.

Setup/Usage

1. Import the workflow: Download the provided JSON and import it into your n8n instance.
2. Configure Credentials:
   • Locate the "OpenAI" node.
   • Click on the "Credentials" field and select your existing OpenAI API credential or create a new one. Ensure it has access to the GPT-4 model.
3. Activate the workflow: Toggle the workflow to "Active" in the top right corner of the n8n editor.
4. Trigger the workflow:
   • The workflow is triggered by a Webhook node.
   • Copy the webhook URL from the "Webhook" node.
   • Send a POST request to this URL with a JSON body containing the blogUrl you want to analyze. For example:

     {
       "blogUrl": "https://example.com/your-blog-post-url"
     }
     

   • The workflow will process the request and respond with the SEO assessment.