Prompt-to-Image Generator & WordPress Uploader (n8n Workflow)

This workflow generates high-quality AI images from text prompts using Leonardo AI, then automatically uploads the result to your WordPress media library and returns the final image URL.

It functions as a Modular Content Production (MCP) tool - ideal for AI agents or workflows that need to dynamically generate and store visual assets on-demand.

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⚙️ Features

• 🧠 AI-Powered Generation
  Uses Leonardo AI to create 1472x832px images from any text prompt, with enhanced contrast and style UUID preset.

• ☁️ WordPress Media Upload
  Uploads the image as an attachment to your connected WordPress site via REST API.

• ☁️ Twitter Media Upload
  Uploads the image to twitter so that you can post the image later on to X.com using the media_id

• 🔗 Returns Final URL
  Outputs the publicly accessible image URL for immediate use in websites, blogs, or social media posts.

• 🔁 Workflow-Callable (MCP Compatible)
  Can be executed standalone or triggered by another workflow. Acts as an image-generation microservice for larger automation pipelines.

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🧠 Use Cases

For AI Agents (MCP)

• Plug this into multi-agent systems as the "image generation module"
• Generate blog thumbnails, product mockups, or illustrations
• Return a clean image_url for content embedding or post-publishing

For Marketers / Bloggers

• Automate visual content creation for articles
• Scale image generation for SEO blogs or landing pages
• Supports media upload for twitter

For Developers / Creators

• Integrate with other n8n workflows
• Pass prompt and slug as inputs from any external trigger (e.g., webhook, Discord, Airtable, etc.)

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📥 Inputs

Field

Type

Description

prompt

string

Text prompt for image generation

slug

string

Filename identifier (e.g. hero-image)

Example:

{
  "prompt": "A futuristic city skyline at night",
  "slug": "futuristic-city"
}

📤 Output

{
  "public_image_url" : "https://your.wordpress.com/img-id",
  "wordpress":{...obj},
  "twitter":{...obj}
}

🔄 Workflow Summary

1. Receive Prompt & Slug
   Via manual trigger or parent workflow execution
2. Generate Image
   POST to Leonardo AI's API with the prompt and config
3. Wait & Poll
   Delays 1 minute, then fetches final image metadata
4. Download Image
   GET request to retrieve generated image
5. Upload to WordPress
   Uses WordPress REST API with proper headers
6. Upload to Twitter
   Uses Twitter Media Upload API to get the media id incase you want to post the image to twitter
7. Return Result
   Outputs a clean public_image_url JSON object along with wordpress and twitter media objects

🔐 Requirements

• Leonardo AI account and API Key
• WordPress site with API credentials (media write permission)
• Twitter / x.com Oauth API (optional)
• n8n instance (self-hosted or cloud)
• This credential setup:
  • httpHeaderAuth for Leonardo headers
  • httpBearerAuth for Leonardo bearer token
  • wordpressApi for upload

🧩 Node Stack

• Execute Workflow Trigger / Manual Trigger
• Code (Input Parser)
• HTTP Request → Leonardo image generation
• Wait → 1 min delay
• HTTP Request → Poll generation result
• HTTP Request → Download image
• HTTP Request → Upload to WordPress
• Code → Return final image URL

🖼 Example Prompt

{
  "prompt": "Batman typing on a laptop",
  "slug": "batman-typing-on-a-laptop"
}

Will return:

{
"public_image_url": "https://articles.emp0.com/wp-content/uploads/2025/07/img-batman-typing-on-a-laptop.jpg"
}

🧠 Integrate with AI Agents

This workflow is MCP-compliant—plug it into:

• Research-to-post pipelines
• Blog generators
• Carousel builders
• Email visual asset creators

Trigger it from any parent AI agent that needs to generate an image based on a given idea, post, or instruction.