Marketing medium to set up

Auto-Categorize Blog Posts

Scans new Markdown blog posts in GitHub, uses GPT-4 to suggest categories and tags, and logs them to Google Sheets for review.

Verified 2026-07-07

Developer-EngineeringMarketer

What it does

You save time on manual tagging as this agent scans your new GitHub blog posts to suggest relevant categories and tags via GPT-4. It logs these AI-generated recommendations directly into Google Sheets for your review while automatically preventing duplicate analysis of existing files.

How it works

When it runs: Run manually · Manual · on demand
How hands-off: Assists you, you do the final step
Setup: An afternoon · about an afternoon
Works with: GitHub, Google Sheets, OpenAI Chat Model

Tools that fit

Services

GitHub : Retrieve blog post content and metadata

Google Sheets : Store existing tags and log AI suggestions

LLM

OpenAI Chat Model : Analyze content and suggest categories/tags

Watch out for

The GitHub API has rate limits for unauthenticated requests, so use a personal access token to increase your quota.
Markdown frontmatter might contain metadata that confuses the categorizer, so strip it before sending content to the LLM.
Google Sheets append operations can fail if column headers change, so validate the sheet structure in a dry run first.
Duplicate entries may occur if the trigger fires multiple times for one commit, so check for existing hashes before appending.

Seen in the wild

n8n: Auto-Categorize Blog Posts with OpenAI GPT-4, GitHub, and Google Sheets for template

Want this running in your business?

This is what I do. I design and build AI agents like this one, and keep them running. If you want it set up for your team instead of doing it yourself, get in touch.

Get in touch

Who it's for

Built for developers who want the busywork around code automated, not the code itself.

Marketers can point this at their own content pipeline with no changes to the pattern.

Frequently asked questions

Who is this for?

developers and engineers and marketers, or anyone doing marketing work who wants this handled automatically rather than manually.

How long does it take to set up?

An afternoon: plan for about an afternoon to get it running end to end.

Related use cases

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