hammadtq

OpenBotAuth helps publishers control automated access from AI crawlers and agents. It verifies requests using RFC 9421 HTTP Message Signatures (via a configurable verifier) and applies per-site or per-post policies like allow, deny, teaser previews, and 402 payment-required responses. It also publishes AI-friendly endpoints like llms.txt, a JSON feed, and per-post Markdown.
Instead of blocking all bots or allowing unrestricted access, you can:
<ul>
<li>See AI bot traffic – Local-only analytics showing which bots are crawling your site</li>
<li>Verify bot identity using cryptographic signatures (RFC 9421)</li>
<li>Show teasers to unverified bots (first N words)</li>
<li>Rate limit bot access per agent</li>
<li>Whitelist/blacklist specific bots</li>
</ul>
<h4>Key Features</h4>
<ul>
<li>Bot Traffic Analytics – See which AI bots (GPTBot, ClaudeBot, PerplexityBot, etc.) are visiting your site</li>
<li>Signature Verification – Verifies RFC 9421 HTTP Message Signatures using Ed25519 cryptography</li>
<li>Content Teasers – Show first N words to unverified bots with customizable per-post settings</li>
<li>Rate Limiting – Per-agent rate limits with configurable time windows</li>
<li>Access Control – Whitelist/blacklist with wildcard pattern matching</li>
<li>Local Analytics – Visual dashboard with charts, stats cards, and decision breakdowns (no external tracking)</li>
<li>AI-Ready Endpoints – Serve llms.txt, JSON feed, and markdown for AI crawlers</li>
<li>Tabbed Admin Interface – Clean organization with Analytics, AI Endpoints, and Configuration tabs</li>
</ul>
<h4>AI-Ready Endpoints</h4>
OpenBotAuth provides machine-readable endpoints for AI systems:
<ul>
<li>/llms.txt – Standardized AI feed discovery (also at /.well-known/llms.txt)</li>
<li>/.well-known/openbotauth-feed.json – JSON list of all published posts</li>
<li>/.well-known/openbotauth/posts/{ID}.md – Per-post markdown content</li>
</ul>
Configure which post types to include (posts, pages, or custom types) and set the feed limit (up to 500 items). All data is served locally from your WordPress database. No external tracking or telemetry. Only published, non-password-protected posts are exposed.
<h4>How It Works</h4>
<ol>
<li>AI agent signs HTTP request with its private key (RFC 9421 signature)</li>
<li>WordPress plugin extracts signature headers and sends them to a verifier service</li>
<li>Verifier fetches agent’s public key from registry and verifies signature</li>
<li>Plugin applies policy: allow full content, show teaser, require payment, or deny</li>
</ol>
<h4>External Service Disclosure</h4>
This plugin connects to an external verifier service. When a signed bot request is received, the plugin sends the following data to your configured verifier URL via <code>wp_remote_post</code>:
<ul>
<li>HTTP method (GET, POST, etc.)</li>
<li>The accessed URL (including query string, if present)</li>
<li>HTTP signature headers (Signature, Signature-Input, Signature-Agent)</li>
<li>Additional HTTP header values explicitly listed in the Signature-Input header (e.g., content-type, accept, user-agent)</li>
</ul>
Privacy protection: Sensitive headers (cookies, authorization, proxy-authorization, www-authenticate) are NEVER forwarded, even if present in the request. If a bot’s signature covers a sensitive header, verification will fail with a clear error.
No WordPress user accounts or personal data is transmitted. Only the headers explicitly covered by the bot’s signature are forwarded to enable cryptographic verification. Note that the URL may include query parameters depending on your site’s structure.
You can: 
* Use the hosted verifier at <code>https://verifier.openbotauth.org/verify</code> 
* Self-host the verifier service (see documentation) 
* The verifier service may log requests server-side depending on your configuration
Analytics are local-only. Decision counts (allow/teaser/deny/pay/rate_limit) and bot traffic observations (User-Agent based) are stored in your WordPress database. No analytics data is sent to external servers.
For more information, please review our <a href="https://openbotauth.org/terms" rel="nofollow ugc">Terms of Service</a> and <a href="https://openbotauth.org/privacy" rel="nofollow ugc">Privacy Policy</a>.
<h3>Developer Hooks</h3>
<h4>Filters</h4>
openbotauth_policy 
Modify policy before applying:
<pre><code>add_filter('openbotauth_policy', function($policy, $post) {
 if ($post->post_type === 'premium') {
 $policy['price_cents'] = 1000;
 }
 return $policy;
}, 10, 2);
</code></pre>
<h4>Actions</h4>
openbotauth_verified 
Triggered when a bot is verified:
<pre><code>add_action('openbotauth_verified', function($agent, $post) {
 error_log("Bot {$agent['jwks_url']} accessed post {$post->ID}");
}, 10, 2);
</code></pre>
openbotauth_payment_required 
Triggered when 402 is returned:
<pre><code>add_action('openbotauth_payment_required', function($agent, $post, $price) {
 // Track payment requests
}, 10, 3);
</code></pre>
<h4>AI Endpoint Filters (v0.1.2+)</h4>
openbotauth_should_serve_llms_txt 
Disable llms.txt endpoint (e.g., when using Yoast):
<pre><code>add_filter('openbotauth_should_serve_llms_txt', '__return_false');
</code></pre>
openbotauth_should_serve_feed 
Disable JSON feed endpoint:
<pre><code>add_filter('openbotauth_should_serve_feed', '__return_false');
</code></pre>
openbotauth_should_serve_markdown 
Disable markdown endpoints:
<pre><code>add_filter('openbotauth_should_serve_markdown', '__return_false');
</code></pre>
openbotauth_feed_item 
Modify feed items:
<pre><code>add_filter('openbotauth_feed_item', function($item, $post) {
 $item['custom_field'] = get_post_meta($post->ID, 'my_field', true);
 return $item;
}, 10, 2);
</code></pre>
openbotauth_markdown_content 
Post-process markdown output:
<pre><code>add_filter('openbotauth_markdown_content', function($markdown, $post) {
 return $markdown . "\n\n---\nCopyright notice here";
}, 10, 2);
</code></pre>

OpenBotAuth – AI Crawler Access Control

Verify AI crawlers with HTTP Signatures and enforce allow/deny/teaser policies; also serves llms.txt and AI-ready feeds.

Marios Alexandrou

Virtual Robots.txt is an easy (i.e. automated) solution to creating and managing a robots.txt file for your site. Instead of mucking about with FTP, files, permissions ..etc, just upload and activate the plugin and you’re done.
By default, the Virtual Robots.txt plugin allows access to the parts of WordPress that good bots like Google need to access. Other parts are blocked.
If the plugin detects an existing XML sitemap file, a reference to it will be automatically added to your robots.txt file.

Virtual Robots.txt

Awesome, a simple solution to a common issue (site content managers who want to hide certain pages from Google search results).

Just a little note: in my case, the existing Sitemap created by the plugin "Google (XML) Sitemaps Generator" by Arne Brachhold wasn't detected.

Efficient and unobstrusive

I like the fact that it's so clean. Thanks for building it!

Does the Job

Virtual Robots.txt automatically creates a robots.txt file for your site. Your robots.txt file can be easily edited from the plugin settings page.

OpenBotAuth – AI Crawler Access Control vs Virtual Robots.txt