elthianlabs

In 2026, signaling your “Intent and Consent” to AI models is the new Technical SEO. Elthian AI Licensing Lite provides a professional framework for site owners to publish machine-readable AI usage policies.
Whether your goal is Generative Engine Optimization (GEO)—earning citations in LLM responses—or protecting your IP from unauthorized training, Elthian ensures your site speaks the language of modern AI agents.
<h3>Advanced License Tiers Included:</h3>
<ul>
<li>Elthian-NoAI: Hard prohibition on all AI system use and automated access.</li>
<li>Elthian-NoTrain: The GEO standard. Permits discovery/citation via AI Search but prohibits training and RAG.</li>
<li>Elthian-UseOnly: For Agentic AI. Permits request-bound, ephemeral processing (deleted after use) but prohibits persistent storage.</li>
<li>Elthian-NonCommercial: Enables academic and research use while blocking commercial exploitation.</li>
<li>Elthian-Public: Open access for training and commercial use with attribution. 
<a href="https://elthian.com/licensing/" rel="nofollow ugc">Learn more about the Elthian AI Licensing standards here</a>.</li>
</ul>
<h3>Technical Features:</h3>
<ul>
<li>Standardized llms.txt: Automatically serve the dynamically generated <code>/llms.txt</code> file preferred by AI crawlers.</li>
<li>AI-Specific Sitemap: Dedicated <code>/ai-license-sitemap.xml</code> to help agents discover your citation-ready content.</li>
<li>Global & Per-Post Controls: Set a site-wide policy or override permissions for specific premium content.</li>
<li>Robots.txt Integration: Appends standard directives (noai, noimageai) based on your selected license.</li>
<li>Well-known JSON Endpoint: Implements the <code>.well-known/ai-policy.json</code> technical standard.</li>
<li>License Badge: Professional human-visible notice to inform visitors of your AI usage rights.</li>
</ul>
A separate Pro plugin is available with additional policy and analytics features: 
<a href="https://elthianlabs.com/plugins/ai-licensing/" rel="nofollow ugc">Learn more about Elthian AI Licensing Pro</a>.
<h3>External services</h3>
This plugin can optionally connect to the Elthian API (api.elthian.com) to register or sync your site’s AI policy declaration.
The external service is disabled by default. No policy data is sent to Elthian unless a site administrator enables Registry Sync or manually initiates a sync.
What the service is used for:
<ul>
<li>To sync the site’s machine-readable AI policy declaration with Elthian’s external registry.</li>
<li>To make the site’s declared AI usage policy discoverable outside the local WordPress installation.</li>
</ul>
What data is sent and when: 
* Data is sent only when Registry Sync is enabled by an administrator, or when an administrator manually initiates a sync. 
* The data sent may include the site ID, site URL, selected policy, policy scopes, URL overrides, timestamp, policy hash or policy identifier, plugin version, WordPress version, PHP version, timezone, and published content count. 
* Post content, page content, comments, user accounts, and customer data are not sent as part of the policy sync.
Service provider:
<ul>
<li>Elthian</li>
</ul>
Terms of service:
<ul>
<li>https://elthianlabs.com/legal/terms/</li>
</ul>
Privacy policy:
<ul>
<li>https://elthianlabs.com/legal/privacy/</li>
</ul>

Elthian AI Licensing Lite

Manage how AI models interact with your content. Implements llms.txt, robots.txt, AI Sitemaps, and machine-readable JSON policies.

Ayuda WordPress

Fernando Tellado

AI Content Signals lets you declare, in a machine-readable way, how AI systems may use your content: for search indexing, real-time AI answers (RAG), or model training. It started with Cloudflare’s Content Signals in robots.txt and now expresses the same preferences across several surfaces, so more crawlers and tools can read them:
<ul>
<li>robots.txt — Cloudflare Content Signals (search / ai-input / ai-train)</li>
<li>HTTP header — <code>X-Robots-Tag: noai, noimageai</code></li>
<li>HTML meta — robots <code>noai, noimageai</code></li>
<li>/.well-known/tdmrep.json — W3C Text and Data Mining Reservation Protocol</li>
<li>EU Directive 2019/790 rights reservation</li>
</ul>
Everything is opt-in and does not change your robots.txt output unless you enable it.
The signals you control
You set three preferences, and AI Content Signals expresses each one in the right format on every surface you enable:
<ul>
<li>search — allow or deny search indexing and traditional search results (links and short snippets)</li>
<li>ai-input — allow or deny using your content for real-time AI answers (RAG, grounding, AI Overviews)</li>
<li>ai-train — allow or deny using your content to train or fine-tune AI models</li>
</ul>
These three come from Cloudflare’s Content Signals vocabulary, written to your robots.txt. When you deny AI training, the same opt-out is also emitted on any other surface you enable: <code>noai, noimageai</code> in an HTML meta tag and an <code>X-Robots-Tag</code> header, plus a <code>tdm-reservation</code> in your TDMRep manifest. Declaring the same preference in several places means a crawler that ignores one signal may still honor another.
Key Features
<ul>
<li>Easy-to-use settings page in WordPress admin</li>
<li>Set global defaults for all crawlers</li>
<li>Configure specific settings for individual AI bots (GPTBot, ClaudeBot, PerplexityBot, etc.)</li>
<li>Add custom bot User-Agents</li>
<li>Supports both physical and virtual robots.txt files</li>
<li>Option to create physical robots.txt with basic WordPress rules</li>
<li>Preview generated Content Signals before applying</li>
<li>Export and import settings as JSON for easy migration between sites</li>
<li>Optional legal text with EU Directive reference</li>
<li>Developer-friendly: filter hook to extend the predefined bots list</li>
<li>Works with existing robots.txt from SEO plugins</li>
<li>Automatic sitemap detection and inclusion</li>
<li>Optional extra output surfaces: HTML robots meta tag (noai, noimageai), X-Robots-Tag header, and a W3C TDMRep file at /.well-known/tdmrep.json</li>
</ul>
Supported Bots
The plugin includes predefined settings for 28 major AI crawlers:
<ul>
<li>OpenAI GPTBot, OAI-SearchBot, and ChatGPT-User</li>
<li>Anthropic ClaudeBot, Claude-Web, and anthropic-ai</li>
<li>Perplexity Bot and Perplexity-User</li>
<li>Google Extended (Gemini) and GoogleOther</li>
<li>Amazon Bot</li>
<li>Apple Extended</li>
<li>Meta/Facebook Bot and meta-externalagent</li>
<li>DuckDuckGo DuckAssistBot</li>
<li>Allen Institute AI2Bot</li>
<li>Mistral AI</li>
<li>ByteDance Bytespider</li>
<li>DeepSeek AI</li>
<li>xAI Grok</li>
<li>Huawei Pangu</li>
<li>Common Crawl, Cohere AI, Diffbot, You.com Bot, and more</li>
</ul>
Important Notice
Content Signals is a declarative standard – it expresses your preferences but does not technically enforce them. AI companies are not legally required to respect these signals, though the plugin includes legal text referencing EU copyright directives.
The IETF AI Preferences (AIPREF) Working Group is currently developing a formal standard based on similar concepts. This plugin implements the current Cloudflare Content Signals specification and will be updated as standards evolve.
This plugin works best when combined with other protection measures like traditional robots.txt rules and server-level bot management.
<h3>Support</h3>
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 <a href="mailto:ai-content-signals@ayudawp.com" rel="nofollow ugc">contact me</a> and tell me what you need.
Need help or have suggestions?
<ul>
<li><a href="https://servicios.ayudawp.com" rel="nofollow ugc">Official website</a></li>
<li><a href="https://wordpress.org/support/plugin/ai-content-signals/" rel="ugc">WordPress support forum</a></li>
<li><a href="https://www.youtube.com/AyudaWordPressES" rel="nofollow ugc">YouTube channel</a></li>
<li><a href="https://ayudawp.com" rel="nofollow ugc">Documentation and tutorials</a></li>
</ul>
Love the plugin? Please leave us a <a href="https://wordpress.org/support/plugin/ai-content-signals/reviews/#new-post" rel="ugc">5-star review</a> and help spread the word!
<h3>About AyudaWP.com</h3>
We are specialists in WordPress security, SEO, and performance optimization plugins. We create tools that solve real problems for WordPress site owners while maintaining the highest coding standards and accessibility requirements.

AI Content Signals

Control how AI uses your content — search, AI answers or training — via robots.txt Content Signals, HTTP headers, meta tags and TDMRep.

Elthian AI Licensing Lite vs AI Content Signals