Research-to-Social Post Generator with Perplexity AI and Facebook Graph API

Who’s it for

Teams that want to turn a chat prompt into a researched, ready-to-post social update—optionally published to Facebook.

What it does / How it works

• Chat Trigger receives the user prompt
• Topic Agent optionally calls a research sub-workflow for fresh sources
• Outputs are validated into a structured JSON
• Post Writing Agent crafts a concise Vietnamese post
• (Optional) Facebook Graph API publishes to your Page

How to set up

1. Connect OpenAI & Facebook in Credentials (no API key inside nodes).
2. In Tool: Call Perplexity Researcher, set your research workflowId.
3. In Publish: Facebook Graph API, set your Page ID and edge.
4. Adjust prompts/tone and the LANGUAGE in CONFIG.
5. Test the flow with sample prompts in the chat.

Requirements

• n8n (Cloud or self-hosted)
• OpenAI API key (stored in Credentials)
• Facebook Page publish permissions
• (Optional) a research workflow for Perplexity

How to customize the workflow

• Add moderation/review gates before publishing.
• Duplicate the publish path for other platforms.
• Store outputs in Sheets/Notion/DB for auditing.
• Tune model choice & temperature for your brand voice.

Security

• Avoid hardcoding secrets in HTTP or Code nodes.
• Keep identifiers (Page IDs, workflowIds) configurable in CONFIG.