---
title: "ChatGPT Atlas: user agent, token, block rate | Agent Ready Crawlers"
description: "ChatGPT Atlas from OpenAI: no robots.txt token, task agent purpose and what a site can check; no exact user-agent string is published. Read 2026-11-04."
canonical: https://agentreadycrawlers.com/crawlers/chatgpt-atlas
site: "Agent Ready Crawlers"
last_updated: 2026-11-04
section: "Crawlers"
---

# ChatGPT Atlas: user agent, token, block rate | Agent Ready Crawlers

> ChatGPT Atlas from OpenAI: no robots.txt token, task agent purpose and what a site can check; no exact user-agent string is published. Read 2026-11-04.

Source: https://agentreadycrawlers.com/crawlers/chatgpt-atlas
Site: Agent Ready Crawlers
Last reviewed: 2026-11-04

Browsing agent from OpenAI

# ChatGPT Atlas (browser agent mode)

In short

ChatGPT Atlas (browser agent mode) is OpenAI's browsing agent. ChatGPT Atlas has no robots.txt token, so robots.txt cannot address it and the crawl cannot measure a block rate. The operator publishes nothing a site can check. ChatGPT Atlas has no operator bot documentation, checked 2026-11-04. Secondary source only (Verisoul Agent Atlas).

Operator

[OpenAI](https://agentreadycrawlers.com/crawlers/operator/openai/) Vendor profile: [OpenAI](https://agentreadycrawlers.com/vendors/openai/)

Purpose

Task agent [All task agent rows](https://agentreadycrawlers.com/crawlers/purpose/task-agent/). A browsing agent that clicks, fills forms and finishes a job for a person.

User-agent string

No exact string is published. What the operator or a third party says: Ran in the user's own browser with a Chrome user agent; no agent token published

robots.txt token

None. No robots.txt line can address this agent.

Respects robots.txt

No documentation

operator publishes no bot documentation (checked 2026-11-04) for Atlas agent mode; Verisoul reports OpenAI retired Atlas on 2026-08-09. [Source](https://www.verisoul.ai/agents/chatgpt-atlas), read 2026-11-04.

Operator publishes no bot documentation (checked 2026-11-04).

Verification

Nothing published

The operator publishes no list, reverse DNS pattern or key directory a site owner can check. [Documentation](https://www.verisoul.ai/agents/chatgpt-atlas), read 2026-11-04.

IP ranges

Not published.

Rate behaviour

Not published.

Block rate

None: the agent has no token, so a robots.txt block rate does not exist.

Documentation

Operator publishes no bot documentation (checked 2026-11-04). [Closest page read](https://www.verisoul.ai/agents/chatgpt-atlas).

Note. Secondary source only (Verisoul Agent Atlas). Kept as a row so log readers can place historic traffic; the signed Cloud browser row is the live OpenAI agent.

## Allow and refuse lines

This agent has no robots.txt token, so there are no lines to copy. Without a token, a published list or a signature, a site owner cannot tell it from an ordinary visitor by request alone.

Refusing or allowing in robots.txt states a preference. For this row the operator or its documentation says robots.txt may not govern the fetch, so enforcement belongs in your WAF.

## OpenAI in the Verification Ledger

One IP JSON per crawler plus a Web Bot Auth key directory for the Cloud browser. The most complete set read. [All operators](https://agentreadycrawlers.com/verification/).

IP lists

-   [openai.com/gptbot.json](https://openai.com/gptbot.json)
-   [openai.com/searchbot.json](https://openai.com/searchbot.json)
-   [openai.com/chatgpt-user.json](https://openai.com/chatgpt-user.json)
-   [openai.com/adsbot.json](https://openai.com/adsbot.json)

Reverse DNS

publishes nothing

Key directory

https://chatgpt.com/.well-known/http-message-signatures-directory

Cloudflare

GPTBot and ChatGPT agent listed Verified on Radar (read 2026-11-04); ChatGPT agent is a Cloudflare signed agent, detection ID 129220581

Visa TAP registry

no public operator-level registration found (checked 2026-11-04)

Mastercard Agent Pay

no public operator-level registration found (checked 2026-11-04)

## Other OpenAI rows

-   [GPTBot](https://agentreadycrawlers.com/crawlers/gptbot/) Training token GPTBot
-   [OAI-SearchBot](https://agentreadycrawlers.com/crawlers/oai-searchbot/) Search index token OAI-SearchBot
-   [ChatGPT-User](https://agentreadycrawlers.com/crawlers/chatgpt-user/) Live answer fetch token ChatGPT-User
-   [OAI-AdsBot](https://agentreadycrawlers.com/crawlers/oai-adsbot/) Other token OAI-AdsBot
-   [ChatGPT agent (Cloud browser, formerly Operator)](https://agentreadycrawlers.com/crawlers/chatgpt-agent/) Task agent no token

## Sources

-   [verisoul.ai: chatgpt atlas](https://www.verisoul.ai/agents/chatgpt-atlas) read 2026-11-04
-   [Overview of OpenAI Crawlers](https://platform.openai.com/docs/bots) read 2026-11-04

Last reviewed 2026-11-04