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  7. LLMark – Markdown for AI Agents & LLMs

LLMark – Markdown for AI Agents & LLMs

Converts your WordPress & WooCommerce content to clean Markdown on the fly for AI agents and LLMs. Humans still get your HTML.

30+ active installsFree on WordPress.org
View on WordPress.orgSupport forum
Will this break my store?

What the WordPress.org registry says about keeping LLMark – Markdown for AI Agents & LLMs running.

WordPress compatibility
Tested to 7.0.4 — 1 branch behind 7.1
Tested against the WordPress branch in use today.
Last updated
2 months ago
Requires PHP
8.1
Your host must be running at least this version.
Requires WordPress
6.6
Contributors
1
A single maintainer. Worth knowing if the plugin is load-bearing for your store.
30+ active installsWordPress.org reports installs in bands, not exact counts.
Maintenance & trust

Scored on how LLMark – Markdown for AI Agents & LLMs is looked after — not on how many stores run it.

Well maintained
Not enough public feedback to put a confident number on this one. Little public feedback — score rests mostly on release activity. What we can see is below.
Maintenance
35 / 35
Updated 69 days ago.
WordPress compatibility
20 / 20
Tested to WP 7.0.4 (current).
Support responsiveness
Not enough data
Only 0 support thread(s) — not enough to judge.
Merchant satisfaction
Not enough data
No ratings yet.
Listing transparency
10 / 10
Provides: screenshots, description, homepage
2 of 5 measures had too little evidence to score. They are left out of the total rather than counted as zero — otherwise a plugin would be marked down for being small rather than for being poorly kept.Measured 2026-09-06 from the WordPress.org plugin registry.
Ratings

No one has rated this plugin on WordPress.org yet. That is a statement about the ratings page, not about the plugin — plenty of well-kept plugins never collect them.

LLMark gives AI agents a clean Markdown version of your WordPress content, so assistants like ChatGPT, Claude and Perplexity (and crawlers like GPTBot and ClaudeBot) read what you mean instead of your cluttered HTML. Humans keep seeing your normal site, and there’s nothing to set up.

  • Automatic. Install, activate, done. Markdown is generated on the fly when an agent asks; browsers always get your normal HTML.
  • WooCommerce-aware. Products come with the real price, stock, SKU and variations, read live from WooCommerce instead of scraped off the page.
  • Private stays private. Nothing you’ve set to noindex, private or password-protected is ever exposed to agents.
  • Easy to discover. An optional llms.txt index and link hints point agents straight at your Markdown.
  • Solid under the hood. Markdown is produced by league/html-to-markdown, an open-source converter with over 30 million downloads, and comes with clean YAML frontmatter. No bloat, no phone-home, no lock-in.

Agents fetch the Markdown by adding .md to any URL, with ?output_format=md, or via an Accept: text/markdown header.

Does this change what my human visitors see?

No. Browsers receive your normal HTML. Markdown is only served when an agent explicitly asks for it via a .md URL, ?output_format=md, or an Accept: text/markdown header.

Will my noindex or private content be exposed to AI agents?

No. LLMark withholds Markdown for any content that is noindex, private, password-protected, or excluded per-post. The same gate also governs the discovery hints and the llms.txt listing.

Does it work with WooCommerce?

Yes. Products are rendered from the WooCommerce data layer with accurate price, SKU, stock, attributes and a variations table.

I get a 404 when I add .md to a URL. Why?

Pretty permalinks must be enabled. Go to Settings → Permalinks, pick any structure other than “Plain”, and save once to refresh the rewrite rules. The ?output_format=md parameter works regardless of permalink settings.

Is this AEO / GEO / AI SEO?

It’s the plumbing for it. Answer Engine Optimization (AEO) and Generative Engine Optimization (GEO) are about being legible to AI search and assistants. LLMark hands those crawlers a clean, token-light Markdown copy of your content, WooCommerce products included, so they ingest what you mean instead of wading through themed HTML.

Do I have to configure anything?

No. Once active, eligible content is served as Markdown on the fly. Visit Settings → LLMark only to change which post types are exposed or tune the behaviour.

Can developers customise the output?

Yes. LLMark exposes filters to control eligibility and shape the Markdown and its frontmatter:

  • llmark_is_eligible decides whether a given post is served as Markdown.
  • llmark_frontmatter_data (and llmark_product_frontmatter_data for WooCommerce) adds or changes YAML frontmatter fields.
  • llmark_response_headers adjusts the headers sent with Markdown responses.

Which post types are exposed is set on the Settings screen, so the common case needs no code.

Does the plugin phone home?

No. LLMark sends no data to any external service.

Categories
AI assistants & chatbots
Plugin details
Version1.0.0
Last updated2026-06-29 8:17pm GMT
Added2026-06-29
Requires WordPress6.6
Tested up to7.0.4
Requires PHP8.1
Tags on WordPress.org
AI
LLM
llms.txt
markdown
woocommerce
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xpay

The agent-readiness stack for the AI shopping era — helping merchants, publishers and SaaS companies get discovered, cited and transacted with by ChatGPT, Perplexity, Claude, Gemini and the custom shopping agents underneath them.

CompanyAgentically Inc. (d/b/a xpay✦)1875 Mission St, Ste 103San Francisco, CA 94103, United Stateslegal@xpay.sh · privacy@xpay.sh
or ask your AI app
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