n8n Workflow: Summarize Instagram Hashtag Ideas with BeatAPI & GPT

Turn Instagram hashtag posts into a cited content-idea brief—automatically

This n8n workflow pulls recent public Instagram posts for a hashtag using BeatAPI Social Data, samples up to 12 captioned examples, and then uses BeatAPI chat completions to summarize repeating content angles—complete with post IDs/URLs for citation.

What this workflow does

• Manual execution: Run it when you need fresh hashtag insights (via a Manual Trigger).
• Set your inputs: Provide the Instagram hashtag keyword (without the “#”) and select a BeatAPI text model to use.
• Fetch public hashtag posts: Calls BeatAPI Social Data to retrieve Instagram posts in full view for that hashtag.
• Extract evidence: Identifies up to 12 usable posts (captions plus post IDs/URLs).
• Stop on empty results: The workflow returns an error if no usable results are returned.
• Generate a brief with citations: Sends the sampled post evidence to BeatAPI chat completions to identify repeated themes and produce a cited content-idea brief.
• Returns metadata: Outputs the generated brief plus source metadata and BeatAPI request IDs.

Use cases

• Find what content angles perform within a niche hashtag (for marketers and SaaS operators).
• Generate a short list of Instagram caption/content ideas backed by example post citations.
• Support automation engineers building repeatable “social listening → content planning” pipelines in n8n.

Technical details

• BeatAPI integrations: BeatAPI Instagram API / Social Data for hashtag post retrieval; BeatAPI chat completions for summarization and idea generation.
• n8n nodes: Set, Code, Sticky Note, HTTP Request, Manual Trigger.
• Authentication: Create a BeatAPI API key and configure an n8n HTTP Header Auth credential using Authorization: Bearer <your_key> in both BeatAPI HTTP Request steps.

Note: The brief is based on a limited sample (up to 12 posts). Review the returned post IDs/URLs before using the ideas.