Mescio

Mescio for Agents makes your WordPress site AI-ready by silently serving posts, pages and WooCommerce products as clean, structured Markdown to any AI agent or LLM pipeline that requests it — using the standard HTTP <code>Accept: text/markdown</code> content negotiation header.
Human visitors using a browser are completely unaffected. Mescio for Agents only activates when an AI agent or crawler explicitly asks for Markdown.
<h4>Why Markdown?</h4>
Feeding raw HTML to an AI is expensive and noisy. A heading like <code>## About Us</code> costs ~3 tokens in Markdown vs 12–15 tokens as HTML — before accounting for <code><div></code> wrappers, navigation bars and script tags that carry zero semantic value. This blog post you are reading takes 16,180 tokens in HTML and 3,150 tokens in Markdown. That is an 80% reduction.
Markdown has become the lingua franca for AI systems. Mescio for Agents lets your site speak it natively, at zero cost to your human visitors.
<h4>How it works</h4>
When an HTTP client sends a request with <code>Accept: text/markdown</code>, Mescio for Agents intercepts the WordPress request lifecycle before any template is rendered, converts the post content to clean Markdown, and returns it with the correct <code>Content-Type: text/markdown</code> header.
<pre><code>curl https://yoursite.com/your-post/ \
 -H "Accept: text/markdown"
</code></pre>
<h4>Features</h4>
<ul>
<li>Zero configuration — works out of the box on any singular post, page or custom post type</li>
<li><code>/llms.txt</code> endpoint — auto-generated index of all your content in the <a href="https://llmstxt.org" rel="nofollow ugc">llmstxt.org</a> standard format, so AI agents can discover what’s on your site</li>
<li><code>/llms-full.txt</code> endpoint — full site content in a single Markdown file, ready for RAG pipelines</li>
<li>WooCommerce support — product pages include price, SKU, stock status, rating, attributes and gallery; products are grouped by category in <code>llms.txt</code></li>
<li>YAML front matter — every document includes structured metadata (title, description, URL, date, categories, tags, featured image)</li>
<li>Multilingual — detects language via WPML, Polylang, TranslatePress or WordPress locale; emits <code>Content-Language</code> and <code>Link: rel=alternate</code> headers</li>
<li>REST API endpoint — <code>/wp-json/mescio-for-agents/v1/markdown?id=<post_id></code> or <code>?url=<permalink></code></li>
<li>Page builder cleanup — aggressively strips Elementor, Divi, WPBakery and Beaver Builder layout noise</li>
<li>Token count header — <code>X-Markdown-Tokens</code> tells AI pipelines how large the document is before processing</li>
<li>Content Signals — emits <code>Content-Signal: ai-train=yes, search=yes, ai-input=yes</code></li>
<li>Correct HTTP caching — <code>Vary: Accept</code> ensures CDNs cache HTML and Markdown versions separately</li>
</ul>
<h4>Response headers</h4>
<ul>
<li><code>Content-Type: text/markdown; charset=utf-8</code></li>
<li><code>Content-Language: it</code> (or detected language)</li>
<li><code>Vary: Accept</code></li>
<li><code>X-Markdown-Tokens: 725</code></li>
<li><code>Content-Signal: ai-train=yes, search=yes, ai-input=yes</code></li>
<li><code>Link: <url>; rel="alternate"; hreflang="en"</code> (when translations available)</li>
</ul>
<h4>Multilingual plugin support</h4>
<ul>
<li>WPML — reads language and available translations automatically</li>
<li>Polylang — reads language and links to translated post IDs</li>
<li>TranslatePress — reads <code>trp_language</code> post meta</li>
<li>Manual — configure primary language and additional languages in Settings → Mescio for Agents</li>
</ul>
<h4>REST API</h4>
<pre><code>GET /wp-json/mescio-for-agents/v1/markdown?id=42
GET /wp-json/mescio-for-agents/v1/markdown?url=https://yoursite.com/my-page/
</code></pre>
<h4>Developer hooks</h4>
Filter: <code>mescio_enabled_post_types</code> — add or remove post types dynamically.
Filter: <code>mescio_pre_convert_content</code> — modify the HTML before conversion to Markdown.
Filter: <code>mescio_post_convert_content</code> — modify the Markdown after conversion.
<h4>Privacy</h4>
This plugin does not collect, store or transmit any personal data. It does not set cookies. It does not make external HTTP requests.

Mescio for Agents


simple, plug and play, for any website; implemented on tens of sites and validated the setup with cloudflare's free isitagentready.com check for content, everything is in the green.


plug and play AI discoverability

Mescio for Agents serves your WordPress content as clean Markdown to AI agents and GPT crawlers. Human visitors never notice a thing.

Kevin Pirnie

AI agents — tools like ChatGPT, Claude, Copilot, and the growing ecosystem of autonomous AI systems — are increasingly being pointed at websites to gather information, interact with APIs, and perform tasks on behalf of users. For a site to work well with these agents, it needs to speak the right language: publishing structured discovery files, declaring its capabilities, and responding to agent-specific requests in the right format.
KP Agent Ready handles all of that for your WordPress site. It implements the current set of agent-readiness standards and the broader AI agent ecosystem — without requiring you to manually create files, edit server configs, or touch a line of code. Everything is managed from a dedicated settings page in the WordPress admin.
<h4>What It Does</h4>
RFC 8288 Link Response Headers 
Every response your site sends will include <code>Link</code> headers pointing agents to your API catalog, agent skills index, and MCP server card. This is how agents find your discovery documents without having to guess URLs.
API Catalog — <code>/.well-known/api-catalog</code> 
Publishes a machine-readable catalog of your site’s APIs in the <code>application/linkset+json</code> format defined by RFC 9727. Each entry in the catalog can point to an OpenAPI specification, human-readable documentation, and a health/status endpoint. If you have not configured any entries yet, the plugin serves a sensible fallback automatically so the endpoint is always valid.
Agent Skills Index — <code>/.well-known/agent-skills/index.json</code> 
Publishes a skills discovery index per the Agent Skills Discovery RFC v0.2.0. This tells agents what your site can do — search your blog, browse your portfolio, submit a contact form, and so on.
Skills are built from three sources:
<ul>
<li>Blog articles — a search skill and a browse skill, toggled with a single switch</li>
<li>Custom post types — any public CPT registered on your site appears as a checkbox; tick it and it gets a browse skill pointing to its archive</li>
<li>Manual entries — define any additional skill with a name, type, description, URL, and an optional sha256 digest</li>
</ul>
MCP Server Card — <code>/.well-known/mcp/server-card.json</code> 
Publishes an MCP Server Card (SEP-1649) identifying your site to Model Context Protocol clients. Configurable name, version, description, transport endpoint, and a capability list. If you do not have an MCP server running yet, just leave the transport blank — the card is still valid and useful for discovery.
OAuth / OIDC Discovery — <code>/.well-known/openid-configuration</code> or <code>/.well-known/oauth-authorization-server</code> 
If your site exposes protected APIs that require authentication, this feature publishes the discovery metadata agents need to authenticate. Supports both OpenID Connect Discovery 1.0 and RFC 8414. Disabled by default — only enable it if you have the infrastructure in place.
OAuth Protected Resource Metadata — <code>/.well-known/oauth-protected-resource</code> 
Complements the OAuth/OIDC feature by publishing RFC 9728 Protected Resource Metadata. Disabled by default.
robots.txt Content Signals 
Appends Content Signals directives to your <code>robots.txt</code> file, declaring your preferences for how AI systems may use your content:
<ul>
<li>ai-train — whether AI companies may use your content to train models</li>
<li>search — whether search engines may index your content</li>
<li>ai-input — whether AI retrieval systems (RAG) may use your content as input</li>
</ul>
Markdown Negotiation 
When an AI agent sends a request with the <code>Accept: text/markdown</code> header, the plugin intercepts the response for singular posts and pages and returns a clean Markdown version of the content. Regular browser requests are completely unaffected.
WebMCP 
Injects a small JavaScript snippet into your page footer that calls <code>navigator.modelContext.provideContext()</code>, exposing your site’s key actions as tools to AI agents running in the browser. Built-in tools include blog search, portfolio navigation, and contact page navigation — each individually toggleable.
llms.txt and llms-full.txt 
Generates physical <code>/llms.txt</code> and <code>/llms-full.txt</code> files in your WordPress web root per the <a href="https://llmstxt.org" rel="nofollow ugc">llmstxt.org</a> specification. These files give AI systems a structured, readable index of your site’s content — who you are, what pages exist, and what your posts are about.
<pre><code>llms.txt contains your site header and a clean list of links by content type. `llms-full.txt` contains the same structure but expands each entry with an excerpt or truncated content block so AI systems can understand the content without fetching every URL.
</code></pre>
Files are regenerated automatically when posts are published, unpublished, or trashed, and whenever settings are saved. A manual Regenerate button is available in the llms.txt settings tab. If your host prevents direct file writes, the generated content is displayed in the admin as a copyable textarea so you can create the files manually.
Configurable options include a custom intro block, toggling pages and posts independently, selecting additional custom post types, setting the excerpt word limit for <code>llms-full.txt</code>, and defining optional additional links that appear under an <code>## Optional</code> section in both files.
<h4>Developer Filters</h4>
Two filters let themes and other plugins extend the plugin’s output without touching settings:
<pre><code>kp_agent_skills — add entries to the agent skills index:

add_filter( 'kp_agent_skills', function ( array $skills ): array {
 $skills[] = [
 'name' => 'my-skill',
 'type' => 'api',
 'description' => 'Does something useful.',
 'url' => 'https://yoursite.com/api/endpoint',
 ];
 return $skills;
} );

kp_webmcp_tools — add tools to the WebMCP context:

add_filter( 'kp_webmcp_tools', function ( array $tools ): array {
 // $tools is the PHP array that becomes the JS tools array
 return $tools;
} );
</code></pre>

KP Agent Ready

Very good for AI

Make your WordPress site discoverable and usable by AI agents via well-known endpoints, MCP, OAuth, and Markdown negotiation.

Mescio for Agents vs KP Agent Ready