Site-wide Blogs Topic Clustering

Topic clusters are the backbone of modern SEO. Instead of chasing isolated keywords, you group related posts under clear themes (“pillar” + “cluster content”). This signals topical authority to Google, improves internal linking, and keeps readers clicking. The catch? Manually auditing a mature blog and mapping hundreds of URLs into clusters can chew up days of spreadsheet work. Our “Cluster Blog into Topics” app automates that audit in minutes.

How the App Works in Moonlit

Step 1 – Pull the right URLs

The Extract Sitemap Urls function reads your sitemap.xml. A segment filter (the “Blog Prefix” input) means you can skip product pages, docs, or anything outside the blog folder. We cap the pull at 25 URLs by default so you can preview results quickly—raise the limit or remove it entirely once you’re happy.

Step 2 – Semantic clustering with AI

The cleaned URL list flows straight into the Semantic Clustering node. With “Text Clustering” enabled, the model digests each post title & meta description to understand meaning, not just matching words. You tell it how many clusters to create (“Number of Topics”), and it returns:

• the original URL, title, description

• a concise two-to-four-word label for its cluster

Behind the scenes it’s performing vector embedding + K-means, then generating human-readable labels with an LLM—zero code or ML background needed.

Customization Ideas