n8n Qwen Chat Completions: Auto-Generate Facebook Posts

Auto-Generate Facebook Posts with Qwen in n8n

This n8n workflow manually triggers a topic + audience niche, calls Alibaba Cloud DashScope (Qwen) chat completions, and returns a ready-to-publish Facebook post (150–200 words)—all extracted into a single output field for easy reuse in your automation pipelines.

What this workflow does

• Manual trigger: The workflow starts when you run it manually in n8n.
• Accepts inputs: It sets post topic (chu_de) and customer niche (ngach) as input values.
• Generates content with Qwen: It sends those inputs to the DashScope-compatible chat completions API (Qwen Plus) and requests a plain-text Facebook post based on your topic and niche.
• Controls output length: The generated post is designed to be 150–200 words.
• Extracts the result: The workflow extracts the generated post text from the API response and outputs it as noi_dung_bai_viet.

Use cases

• Content teams: Generate niche-specific Facebook posts for campaigns without writing from scratch.
• SaaS operators: Quickly draft social copy for different product themes and audience segments.
• Automation engineers: Plug the output field (noi_dung_bai_viet) into downstream workflows (posting tools, approval steps, or bulk scheduling).

Technical details

• Tech stack / nodes: Manual Trigger, Set, HTTP Request.
• Integration: Alibaba Cloud Model Studio (DashScope) using a Qwen Plus chat completions endpoint.
• Authentication: Configure an HTTP Header Auth credential with Header Name: Authorization and a valid Qwen API key that starts with sk-.
• Region matters: Ensure the API endpoint region matches your key (e.g., Singapore key → dashscope-intl.aliyuncs.com), or you may see authentication errors.