Markdown for AI Agents vs VigIA – AI Visibility, Analytics & Control

Markdown for AI Agents is a lightweight WordPress plugin that enables HTTP content negotiation for your site’s content. When a client (like an AI agent or a custom script) requests a page with the Accept: text/markdown header, the plugin intercepts the request and returns a clean, structured Markdown representation of the post or page content. This is ideal for AI crawlers, RAG (Retrieval-Augmented Generation) systems, and non-browser clients that prefer machine-friendly text over complex HTML. Important note: This plugin is primarily a developer/integration tool. Human visitors browsing your site will never see any difference — the Markdown output is only served when explicitly requested via the Accept: text/markdown HTTP header. Normal browser requests always receive the standard HTML page. Key Features: Automatically detects Accept: text/markdown headers. Converts HTML content to clean Markdown using the League HTMLToMarkdown library. Strips away theme layout, navigation, headers, footers, and sidebars — serving only the main content. Adds useful HTTP response headers: Content-Type: text/markdown, Vary: Accept, and X-Markdown-Word-Count. Respects WordPress visibility rules and filters. No configuration required — works out of the box for posts, pages, and custom post types. How It Works This plugin uses a standard web technique called HTTP content negotiation. The same URL on your site can serve different representations of the same content depending on what the client asks for: A regular browser sends Accept: text/html → receives your normal HTML page. An AI agent sends Accept: text/markdown → receives a clean Markdown version of the same page. No extra URLs, no duplicate content, no configuration needed. The plugin hooks into WordPress’s template_redirect action, detects the Accept header, captures the rendered HTML, converts it to Markdown, and returns it with appropriate headers. Why Markdown for AI Agents? When building RAG (Retrieval-Augmented Generation) applications or AI pipelines that ingest web content, HTML is extremely noisy. A typical WordPress page contains thousands of tokens worth of HTML tags, inline styles, navigation menus, scripts, and layout markup — none of which carries meaning for an AI model. Serving clean Markdown instead can reduce token consumption by up to 60%, which means: Lower API costs — fewer tokens ingested when loading pages into vector stores or LLM pipelines. Faster processing — less text for the model to parse, filter, and discard. Better retrieval accuracy — higher signal-to-noise ratio improves the quality of RAG results. Simpler pipelines — no need for custom HTML stripping logic on the client side; the plugin handles it server-side. Any AI agent, crawler, or ingestion script that sends Accept: text/markdown in its request header will automatically receive the clean Markdown version — no extra URLs, no separate endpoints, no changes to your content workflow.

VigIA (Spanish for “lookout” or “watchman”, incorporating “IA” – Spanish for “AI”) is a complete AI visibility toolkit for WordPress. Monitor 60+ AI crawlers, control access to your content, and optimize how AI systems discover and understand your site. What does VigIA do? Scores your AI visibility with a 100-point analyzer covering 20 checks across 5 categories Tracks AI crawlers visiting your site (GPTBot, ClaudeBot, PerplexityBot, and 60+ others) Provides detailed analytics with advanced filters, server-side pagination, and exportable reports with metadata banner Blocks unwanted crawlers via PHP (403 response) Manages robots.txt rules for AI crawlers with compliance monitoring Sends email alerts about crawler activity (daily, weekly, or monthly) Generates llms.txt files to help AI systems understand your site Serves markdown endpoints for posts, pages, taxonomy archives (categories, tags, WooCommerce product categories, custom taxonomies) and WooCommerce products with schema-like data Generates JSON-LD structured data with Site Identity and AI Discovery signals Exposes abilities for AI agents and automation tools (WordPress 6.9+) Key Features AI Visibility Analyzer * 100-point scoring system with letter grades (A+ to F) * 20 individual checks across 5 categories * Access & AI Discovery (37 pts): robots.txt, AI bot directives, Content Signals, llms.txt, sitemap, RSS feed * Structured Data & Semantic Context (25 pts): JSON-LD schemas, Open Graph, Twitter Cards, meta description, canonical URL * Content Structure & Readability (20 pts): heading hierarchy, semantic HTML5, image alt text, content/HTML ratio * AI Interaction & Distribution (8 pts): markdown delivery, AI share buttons * Access Performance (10 pts): TTFB measurement * Smart recommendations with direct links to VigIA features and plugin suggestions * Analyze any page on your site with URL autocomplete selector * Results cached for 24 hours with manual re-analyze option Analytics Dashboard * Total visits, unique crawlers, and pages crawled statistics * Timeline chart with daily breakdown * Category distribution (AI Training, AI Search, AI Assistant, Data Scraper) * Top crawlers and most crawled pages tables with paginated navigation * Share Buttons & AI-powered Summaries integration: see share button clicks per page * Recent activity log with content type and HTTP status columns (color coded by status family) * Advanced filters: multi-select crawler picker, content type, HTTP status code, and configurable date range * Server-side pagination with four-button pager (first, previous, next, last) — operates over the full database, not just the latest 500 rows * Period comparison functionality * CSV export with a metadata banner (site name, site URL, export type, date range, export timestamp, applied filters) * “Export filtered CSV” button that downloads exactly what the active filters return, with vigia-filtered-YYYY-MM-DD.csv filename * Content type detection distinguishes Home, Post, Page, Product, custom CPTs, Category archive, Tag archive, Date/Author archive, Feed, Sitemap, REST API, File, Admin / login attempts (/wp-admin, /wp-login.php), WordPress system (admin-ajax, xmlrpc, wp-cron, wp-comments-post), 404 Not found, and Other Crawler Blocking * Block crawlers via PHP with 403 Forbidden response * Quick block dropdown in analytics dashboard * Manage blocks from Extras page * Works on any server (Apache, Nginx, LiteSpeed, etc.) Robots.txt Management * Add Disallow rules for AI crawlers * Visual preview of your robots.txt * Compliance monitoring: see which crawlers ignore your rules * One-click blocking for non-compliant crawlers * Works with both physical and virtual robots.txt Email Alerts * Daily, weekly, or monthly reports * Three detail levels: Minimal, Normal, Complete * Non-compliant crawler warnings * Activity comparison with previous period Markdown for Agents * Serve posts, pages and any public post type as optimized markdown for AI agents * Serve taxonomy archive pages (categories, tags, WooCommerce product categories, custom taxonomies) as markdown — disabled by default, opt in per taxonomy * Dedicated .md URL endpoints (e.g., /your-post.md, /category/news.md, /product-category/electronics.md) * Accept: text/markdown content negotiation on posts and taxonomy archive pages * Discoverability via Link HTTP headers and HTML tags * YAML frontmatter for posts: title, date, modified, author, image, categories, tags, post type, lang * YAML frontmatter for taxonomy terms: title, description, url, type, taxonomy, parent, count, image (term meta), lang * WooCommerce product frontmatter adds schema-like fields: sku, product_type, price, regular_price, sale_price, currency, availability, stock_quantity, rating, rating_count, review_count * Taxonomy term body includes the term description (rendered through the_content), the list of direct child terms in hierarchical taxonomies, and an excerpt of the latest posts/products assigned to the term * Product listings inside product_cat archives include an inline summary with formatted price, “was X” on sale items, star rating and out-of-stock flag * Respects blocking rules (blocked crawlers get 403) and LLMs.txt exclusion filters * Per-term noindex detection from Yoast SEO, Rank Math, All in One SEO and SEOPress * Analytics integration: tracks markdown requests per crawler * X-Markdown-Tokens response header * Filters: vigia_markdown_post_eligible, vigia_markdown_term_eligible, vigia_markdown_term_posts_limit * Follows the Cloudflare Markdown for Agents standard LLMs.txt Generator * Select content by post type with one click * Filter by taxonomies (categories, tags, custom) * Manual include/exclude with AJAX search * Exclude by URL patterns (wildcards supported) * SEO plugin integration (auto-exclude noindex content) * Auto-regeneration (daily, weekly, monthly) * Robots.txt integration (add llms.txt and llms-full.txt references) * Generate llms.txt and llms-full.txt files * Full content or excerpt mode * Compatible with Yoast SEO, Rank Math, All in One SEO, SEOPress, The SEO Framework, and Native SEO NoIndexer JSON-LD Structured Data * Generate WebSite and Organization/Person schema for site identity * AI Discovery: ReadAction pointers to llms.txt, llms-full.txt, and Markdown for Agents endpoints * Social profiles and sameAs links for brand identity across the web * SearchAction for Google sitelinks search box * Media library integration for logo selection * SEO plugin conflict detection (Yoast, Rank Math, AIOSEO, SEOPress, The SEO Framework) * Choose output page (front page or any published page) * Live JSON-LD preview with real-time updates * Smart integration with LLMs.txt and Markdown for Agents features Supported AI Crawlers VigIA monitors 60+ AI crawlers including: OpenAI: GPTBot, OAI-SearchBot, OAI-AdsBot, ChatGPT-User Anthropic: ClaudeBot, Claude-SearchBot, Claude-User, Claude-Code Google: Google-Extended, GoogleOther, Gemini-Deep-Research, Google-NotebookLM Perplexity: PerplexityBot, Perplexity-User Meta: Meta-ExternalAgent, FacebookBot, Meta-WebIndexer Amazon: Amazonbot, Amzn-SearchBot, bedrockbot Mistral: MistralAI-User, MistralAI-Index Microsoft: BingBot ByteDance: Bytespider Apple: Applebot-Extended And many more… Privacy Focused VigIA stores visitor data locally in your WordPress database. No data is sent to external servers. Abilities API VigIA is one of the first WordPress plugins to implement the Abilities API introduced in WordPress 6.9. This API allows AI agents, automation tools, and external systems to discover and interact with VigIA’s functionality in a standardized, secure way. What are Abilities? Abilities are self-contained units of functionality that VigIA exposes through WordPress’s central registry. Each ability has defined inputs, outputs, and permissions, making it easy for automation tools to understand and use them. Available Abilities VigIA registers the following abilities: Analytics vigia/get-crawler-stats – Get statistics about AI crawler visits (total visits, unique crawlers, pages crawled) vigia/get-top-crawlers – Get a ranked list of most active AI crawlers vigia/get-top-pages – Get the most crawled pages on your site Blocking vigia/get-blocked-items – List all blocked crawlers and IP addresses vigia/block-crawler – Block a crawler by User-Agent pattern vigia/unblock-crawler – Remove an existing block Robots.txt vigia/get-robots-rules – Get current AI crawler rules in robots.txt vigia/add-robots-disallow – Add a Disallow directive for a crawler vigia/remove-robots-rule – Remove a robots.txt rule Use Cases Automated monitoring: AI agents can query crawler statistics and alert you to anomalies Reactive blocking: Automation tools can block crawlers that repeatedly ignore robots.txt External dashboards: Aggregate data from multiple WordPress sites with VigIA installed WP-CLI integration: Future command-line access through the Abilities API n8n / Make workflows: Build custom automation flows using VigIA’s abilities Requirements The Abilities API ships with WordPress 6.9 and later. On older WordPress versions, VigIA works normally but abilities and MCP are not available. MCP Server (Model Context Protocol) VigIA exposes its 9 abilities as native MCP tools to any MCP-compatible client (Claude Code, Cursor, Claude Desktop, Codex CLI, Antigravity, Continue, Cline, Zed and similar) using the official WordPress MCP Adapter. The adapter ships bundled with the plugin, so the MCP endpoint is active right after installation — no Composer step or terminal access required. Requirements WordPress 6.9 or later (provides the Abilities API) Quick connect (recommended) Open VigIA > Extras > MCP and click “Generate password and connection commands”. The plugin creates a dedicated Application Password named VigIA MCP and renders ready-to-paste commands for Claude Code, Cursor, Claude Desktop and a generic block (URL + Authorization header) for any other MCP client. The plain password is shown only once. If you lose it, revoke the entry from the same panel and generate a new one. Endpoint https://your-site.example/wp-json/vigia/v1/mcp The endpoint uses HTTP Basic auth with the WordPress Application Password. The user must have the manage_options capability. Connecting Claude Code Quick Connect builds the full command for you. The shape is: claude mcp add --transport http vigia https://your-site.example/wp-json/vigia/v1/mcp --header "Authorization: Basic BASE64_OF_USER_AND_APP_PASSWORD" Claude Code merges the new entry into its config file automatically — no risk of breaking other servers. Connecting Cursor Save the JSON block from Quick Connect as ~/.cursor/mcp.json. You can also reach this file from inside Cursor at Settings → Cursor Settings → MCP. If the file already exists with other content, see the FAQ. Claude Desktop and other clients Claude Desktop does not speak HTTP MCP, so it needs a small bridge and a config file of its own. Any other client (Codex CLI, Continue, Cline, Antigravity, Zed, or your own) takes the two raw values Quick Connect exposes: the server URL and the Authorization header. Both cases are covered in the FAQ, together with how to merge VigIA into a config file that already exists without losing what is in it. Read-only mode If you only want your AI to consult VigIA (not change anything), enable “Read-only mode” in the MCP tab. While on, write actions (block, unblock, robots changes) return a permission denied error. Read actions (statistics, top crawlers, blocked items, robots rules) keep working. The toggle stores a vigia_mcp_read_only option that hooks into the vigia_can_write_via_abilities filter. Developers can still force read-only from a mu-plugin: add_filter( 'vigia_can_write_via_abilities', '__return_false' ); The mu-plugin filter at the default priority takes precedence over the toggle. Who can reach the endpoint The endpoint requires the capability to manage options, the same one every tool behind it already asked for. The vigia_mcp_transport_capability filter can lower that bar; each tool keeps its own permission check. After connecting Restart your MCP client after adding the server so it picks up the new tools. Then try a few prompts to confirm everything is wired up: “Show me VigIA crawler stats for the last 7 days.” “List the top 5 most crawled pages on this site.” “Add a robots.txt Disallow rule for TestBot and then list the current AI crawler rules.” The third example exercises a read + write + read round-trip, which is the most complete sanity check. Support Need private support or custom development? Do you need one-on-one help, priority troubleshooting, or a custom feature, integration, or tweak built specifically for your site? I offer private support and custom development. Just contact me and tell me what you need. Need help or have suggestions? Official website WordPress support forum YouTube channel Documentation and tutorials Love the plugin? Please leave us a 5-star review and help spread the word! About AyudaWP We are specialists in WordPress security, SEO, AI and performance optimization plugins. We create tools that solve real problems for WordPress site owners while maintaining the highest coding standards and accessibility requirements.