KP Agent Ready vs Really Simple Security – Simple and Performant Security (formerly Really Simple SSL)

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. What It Does RFC 8288 Link Response Headers Every response your site sends will include Link 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 — /.well-known/api-catalog Publishes a machine-readable catalog of your site’s APIs in the application/linkset+json 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 — /.well-known/agent-skills/index.json 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: Blog articles — a search skill and a browse skill, toggled with a single switch 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 Manual entries — define any additional skill with a name, type, description, URL, and an optional sha256 digest MCP Server Card — /.well-known/mcp/server-card.json 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 — /.well-known/openid-configuration or /.well-known/oauth-authorization-server 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 — /.well-known/oauth-protected-resource 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 robots.txt file, declaring your preferences for how AI systems may use your content: ai-train — whether AI companies may use your content to train models search — whether search engines may index your content ai-input — whether AI retrieval systems (RAG) may use your content as input Markdown Negotiation When an AI agent sends a request with the Accept: text/markdown 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 navigator.modelContext.provideContext(), 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 /llms.txt and /llms-full.txt files in your WordPress web root per the llmstxt.org 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. 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. 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 llms-full.txt, and defining optional additional links that appear under an ## Optional section in both files. Developer Filters Two filters let themes and other plugins extend the plugin’s output without touching settings: 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; } );

Easily improve site security with WordPress Hardening, Two-Factor Authentication (2FA), Login Protection, Vulnerability Detection and SSL certificate. Really simple, Effective and Performant WordPress Security Really Simple Security is the most lightweight and easy-to-use security plugin for WordPress. It secures your WordPress website with SSL certificate generation, including proper 301 https redirection and SSL enforcement, scanning for possible vulnerabilities, Login Protection and implementing essential WordPress hardening features. We believe that security should have the absolute minimum effect on website performance, user experience and maintainability. Therefore, Really Simple Security is: Lightweight: Every security feature is developed with a modular approach and with performance in mind. Disabled features won’t load any redundant code. Easy-to-use: 1-minute configuration with short onboarding setup. Security Features Easy SSL Migration Migrates your website to HTTPS and enforces SSL in just one click. 301 redirect via PHP or .htaccess Secure cookies Let’s Encrypt: Install an SSL Certificate if your hosting provider supports manual installation. Server Health Check: Your server configuration is every bit as important for your website security. WordPress Hardening Tweak your configuration and keep WordPress fortified and safe by tackling potential weaknesses. Prevent code execution in the uploads folder Prevent login feedback and disable user enumeration Disable XML-RPC Disable directory browsing Username restrictions (block ‘admin’ and public names) and much more.. Vulnerability Detection Get notified when plugins, themes or WP core contain vulnerabilities and need appropriate action. Login Protection Allow or enforce Two-Factor Authentication (2FA) for specific user roles. Users receive a two-factor code via Email. Improve Security with Really Simple Security Pro Protect your site with all essential security features by upgrading to Really Simple Security Pro. Advanced SSL enforcement Mixed Content Scan & Fixer. Detect files that are requested over HTTP and fix them to HTTPS, both Front- and Back-end. Enable HTTP Strict Transport Security and configure your site for the HSTS Preload list. Firewall Really Simple Security Pro includes a performant and efficient WordPress firewall, to stop bots, crawlers and bad actors with IP and username blocks. 404 blocking – Blocks crawlers as they trigger unusual numbers of 404 errors. Region blocking – Only allow/block access to your site from specific regions. Automated and customisable Firewall rules. IP blocklist and allowlist. Security Headers Security headers protect your site visitors against the risk of clickjacking, cross-site-forgery attacks, stealing login credentials and malware. Independent of your Server Configuration, works on Apache, LiteSpeed, NGINX, etc. Protect your website visitors with X-XSS Protection, X-Content-Type-Options, X-Frame-Options, a Referrer Policy and CORS headers. Automatically generate your WordPress-tailored Content Security Policy. Vulnerability Measures When a vulnerability is detected in a plugin, theme or WordPress core you will get notified accordingly. With Vulnerability Measures, you can configure simple but effective measures to make sure that a critical vulnerability won’t remain unattended. Force update: An update process will be tried multiple times until it can be assumed development of a theme or plugin is abandoned. You will be notified during these steps. Quarantine: When a plugin or theme can’t be updated to solve a vulnerability, Really Simple Security can quarantine the plugin. Advanced Site Hardening Choose a custom login URL Automated File Permissions check and fixer Rename and randomize your database prefix Change the debug.log file location to a non-public folder Disable application passwords Control admin creation Disable HTTP methods, reducing HTTP requests Login Protection Secure your website’s login process and user accounts with powerful security measures. Two-Step verification (Email login) 2FA (two factor authentication) with TOTP Passwordless login with passkey login Enforce strong passwords and frequent password change Limit Login Attempts With Limit Login Attempts you can configure a threshold to temporarily or permanently block IP addresses or (non-existing) usernames. You can also throw a CAPTCHA after a failed login (hCaptcha or Google reCaptcha) Access Control Restrict access to your site for specific regions. Add specific IP addresses or IP ranges to the Blocklist or Allowlist. Useful Links Documentation Security Definitions Translate Really Simple Security Issues & pull requests Feature requests Love Really Simple Security? If you want to support the continuing development of this plugin, please consider buying Really Simple Security Pro, which includes some excellent security features and premium support. About Really Simple Plugins Our mission is to make complex WordPress requirements really easy. Really Simple Security is developed by Really Simple Plugins. For generating SSL certificates, Really Simple Security uses the le acme2 PHP Let’s Encrypt client library, thanks to ‘fbett’ for providing it. Vulnerability Detection uses WP Vulnerability, an open-source initiative by Javier Casares. Want to join as a collaborator? We’re on GitHub as well!