Interpost AI Internal Links

Interpost helps you build a strong internal link structure without leaving the editor. Instead of keyword matching, it understands what your posts are about. Semantic embeddings find genuinely related content, then AI picks anchor text that already exists naturally in your draft.

Interpost is made by Logic Void. The plugin page is at logicvoid.dev/plugins/interpost.

How it works

1. Index your posts. The plugin generates a semantic embedding for each published post and stores it locally in your database. This happens automatically on publish/update, or in bulk from the settings page.
2. Find related posts. While editing, click Find Related Posts in the Interpost sidebar. Your draft is embedded and compared against your indexed posts by cosine similarity. No AI call is needed for this step beyond the single draft embedding.
3. Get anchor text suggestions. Only your top 15 most similar posts are sent to the AI along with your draft. It selects natural 4 to 6 word phrases that exist verbatim in your text and pairs each with the most relevant post.
4. Insert links. One click adds the link at the suggested anchor text location in the editor.

Why semantic instead of keyword matching?

Keyword-based internal linking tools suggest links wherever a word happens to appear. Interpost compares the meaning of your draft against the meaning of every published post, so a post about “neuroplasticity in adults” can be linked from a draft about “learning new skills after 40” even if they share no keywords.

Requirements

• WordPress 6.8+ with the block editor (Gutenberg)
• PHP 8.2+
• A free Google Gemini API key (get one here)

External services

This plugin connects to the Google Gemini API (generativelanguage.googleapis.com) to provide its core functionality. You must supply your own API key.

What is sent and when:

• When a post is indexed (on publish/update, or during bulk indexing), the post’s title and content (first 2,000 words, HTML stripped) are sent to Google’s embedding API to generate a semantic embedding.
• When you click Find Related Posts in the editor, your draft content is sent to Google’s embedding API, and then your draft plus the titles, URLs, and excerpts of your top 15 most similar published posts are sent to Google’s generative API to produce anchor text suggestions.

No data is sent anywhere unless you have entered an API key. No data is sent to any service other than Google. The embeddings themselves are stored locally in your own WordPress database.

This service is provided by Google: Terms of Service, Privacy Policy.