ChatGPT agent
OpenAI's agentic browser.
- Operator
- OpenAI
- Type
- Agentic browser
- In the user agent
- does not appear
- robots.txt token
- none
- Follows robots.txt
- does not say whether it follows robots.txt
- Official documentation
- help.openai.com
- Checked on
- 2026-11-04
What is ChatGPT agent?
ChatGPT agent is OpenAI's agentic browser. It navigates, clicks and fills in forms in a browser on behalf of a person, for example to compare offers or book something.
The operator's description: ChatGPT's browsing agent; identified by RFC 9421 signatures, not by User-Agent.
(help.openai.com)
How do I block or allow ChatGPT agent?
ChatGPT agent has no robots.txt token of its own. OpenAI does not say whether it follows robots.txt. Controlling its access means recognising its verified identity at the edge (CDN or server).
How do I see whether ChatGPT agent visits my site?
ChatGPT agent does not identify itself in the user agent; it looks like an ordinary browser. It can only be recognised by its signature or by the addresses its operator publishes, which is what Knocklog checks.
How do I know it is really ChatGPT agent?
OpenAI signs ChatGPT agent requests with Web Bot Auth (HTTP message signatures, RFC 9421) from https://chatgpt.com. A valid signature is the strongest proof of identity.
Knocklog runs this check on every visit and separates the genuine agent from impostors.
Does ChatGPT agent visit your site?
See in seconds how your site treats AI agents. Then connect your traffic to learn who really came.
Other OpenAI agents
- GPTBot AI training crawler
- OAI-SearchBot AI search crawler
- OAI-AdsBot Ads checker
- ChatGPT-User Assistant acting for a person