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Generate and Auto-Evaluate Facebook Ad Headlines using GPT-4o-mini

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Created by: Yaron Been || yaron-nofluff

Yaron Been

Last update

Last update 22 days ago

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Description

This workflow automatically generates Facebook ad headlines for your product using OpenAI and evaluates their quality using custom AI-generated criteria. It ensures you get high‑quality, scroll‑stopping headlines without needing a copywriter.

Overview

This workflow captures a product description via a form, generates a Facebook ad headline, invents a scoring rubric, evaluates the headline against it, and optionally loops for revisions — all autonomously. Ideal for marketers and media buyers looking to scale creative testing.

Tools Used

  • n8n: The automation platform that powers and orchestrates the entire workflow.
  • OpenAI: Used for headline generation, scoring criteria creation, and evaluation logic.
  • (Optional) Google Sheets / Notion / Email: For logging approved headlines or sharing results.

How to Install

  1. Import the Workflow: Download the .json file and import it into your n8n instance.
  2. Connect OpenAI: Add your OpenAI credentials to the GPT nodes.
  3. Customize the Prompt (optional): Tweak the system prompt inside the Set_PromptForHeadline node.
  4. Add Output Handling (optional): Connect the “NO” path in the If_NeedMoreIterations node to Google Sheets, Slack, etc.
  5. (Optional) Add loop limits or storage logic to manage iterations or save results.

Use Cases

  • Media Buyers: Generate and test hooks at scale with no creative bottlenecks.
  • Solo Marketers: Get high-converting headlines even without a copywriter.
  • Agencies: Streamline copy testing and evaluation in client campaigns.
  • Startup Teams: Automate creative generation during product launches or A/B tests.

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Hashtags

#n8n #openai #automation #copywriting #facebookads #headlines #aicopy #promptengineering
#marketingautomation #nocode #llm #creativeautomation #mediabuying #adtesting #adcreative
#marketingtools #digitalmarketing #copytesting #scalablecreative #chatgpt #adhooks
#growthmarketing #automatedworkflows #aiworkflow #creativeops #marketingops #growthtools