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.