Which AI assistants send visitors to my site?

Where the signal is

A click in ChatGPT arrives with the referrer chatgpt.com; Perplexity with perplexity.ai; some assistants add utm_source=chatgpt.com. Google Analytics files most of these under Referral or Direct, and you have to know the host names to build a segment. The list here is maintained in one file, versioned, and covers a dozen assistants.

What the Agents view shows

Each assistant as a row of kind referral: how many visitors in the window, the share of all agent traffic, the trend against the previous period. The Pages view shows where they land, which is usually not the homepage.

Why this is the GEO number

Generative engine optimisation is guesswork until you know which assistant actually recommends you and for which page. Two weeks of referrals tell you which content assistants cite and which they ignore; that is the feedback loop the discipline was missing.

Reading it from your own tools

The same rows come back from the stats API and the MCP tool, so a weekly report or a Claude question can read them without opening the dashboard.

{ "mcpServers": { "agent-tracking": { "url": "https://agenttracking.co/api/mcp",
  "headers": { "Authorization": "Bearer wmt_your_token" } } } }

In short