Documentation
AI Referrer Taxonomy
16+ built-in platforms and growing, fully editable. Add, edit, deactivate, or export entries in the free plugin.
AI Referrer Taxonomy
The AI Referrer Taxonomy is a list of known AI platform domains. When a session arrives with a referrer matching one of these domains, the session is classified as AI tools.
Built-in platforms - free plugin
The free plugin ships with 16+ AI platforms in the default taxonomy, and the list keeps growing with new releases as new AI platforms emerge. Some platforms are matched against more than one domain. ChatGPT, Google Gemini, and Microsoft Copilot, for example, each match two separate domains, since each platform is reachable from more than one URL. View, add, edit, activate, deactivate, delete, and export entries, with no license key required.
| Platform | Referrer domains |
|---|---|
| ChatGPT | chat.openai.com, chatgpt.com |
| Google Gemini | gemini.google.com, bard.google.com |
| Claude (Anthropic) | claude.ai |
| Perplexity | perplexity.ai, www.perplexity.ai |
| Microsoft Copilot | copilot.microsoft.com, bing.com/chat |
| Grok (xAI) | grok.x.ai, x.ai |
| Meta AI | meta.ai |
| You.com | you.com |
| Character.AI | character.ai |
| Phind | phind.com |
| Kagi | kagi.com |
| Brave Leo | search.brave.com |
| HuggingChat | huggingface.co |
| Pi (Inflection) | pi.ai |
| Mistral Le Chat | chat.mistral.ai |
| DeepSeek | chat.deepseek.com |
| NotebookLM | notebooklm.google.com |
| … and more | Check Attribution → AI Taxonomy in your WordPress admin for the full current list |
Adding, editing, and exporting entries
Manage entries at WordPress Admin → Attribution → AI Taxonomy. Each entry has:
- Platform name - display label
- Referrer domains - the domains to match
- Status - active or deactivated
Deactivating an entry stops it from matching without deleting it, useful if you want to pause tracking a platform temporarily. Export writes every entry, built-in and your own, to a JSON file.
Bulk import - Pro
Adding entries one at a time through the screen is unchanged between Free and Pro. Pro adds bulk import: bringing in many entries at once from a file rather than adding them individually. This is the only AI Taxonomy capability that is Pro-exclusive.
Taxonomy updates: The built-in taxonomy is updated with plugin releases as new AI platforms emerge. Entries you have added or edited yourself are not affected by these updates.
Common questions
What happens if a visitor arrives from an AI platform that is not in the taxonomy?
How often is the built-in taxonomy updated?
Can I remove or disable a built-in platform I do not want tracked?
Does the taxonomy detect AI platforms that browse on a user's behalf, like AI agents or crawlers?
Will adding or editing an entry affect existing session data?
What does Pro add to the AI Taxonomy if I can already edit it in Free?
CQIP is a methodology standard, not a technology stack. Implementations exist for static PHP sites, WordPress, page generators, and other document management systems. The platform is the implementation detail - the standard and the eight canonical block types are consistent across all implementations.