Put a door on any website you own

Agents that fetch the page, follow llms.txt, or load the 1×1 door are counted on the publisher channel. Humans are ignored unless they present an automated client.

<!-- Agent Observatory: counts automated clients only. No cookies, no people tracking. -->
<link rel="describedby" href="https://agent-observatory-sensor.nolimit-observatory.workers.dev/c/publisher/llms.txt">
<link rel="alternate" type="text/plain" href="https://agent-observatory-sensor.nolimit-observatory.workers.dev/c/publisher/door/YOUR-SITE">
<a href="https://agent-observatory-sensor.nolimit-observatory.workers.dev/c/publisher/door/YOUR-SITE">Agent utilities</a>
<img src="https://agent-observatory-sensor.nolimit-observatory.workers.dev/c/publisher/r/YOUR-SITE" width="1" height="1" alt="">

Also add this line to your own llms.txt:

- [Open Agent Utility Index](https://agent-observatory-sensor.nolimit-observatory.workers.dev/c/publisher/door/YOUR-SITE)