Agent Ready Crawlers

The field guide to every AI crawler and agent at the door, and the vendors who decide who gets in.

Browsing agent from Anthropic

Claude computer use (API tool)

In short

Claude computer use (API tool) is Anthropic's browsing agent. Claude computer use 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. Claude computer use has no operator bot documentation, checked 2026-11-04. Hosted browsers it runs inside (Browserbase, AgentCore, Cloudflare Browser Rendering) may sign requests.

Operator
Anthropic Vendor profile: Anthropic
Purpose
Task agent All task agent rows. 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: Whatever browser the developer runs; no Anthropic identifier
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). The computer use tool runs in the developer's own environment, so requests come from the developer's infrastructure. Source, 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, read 2026-11-04.

IP ranges
Not published.
Rate behaviour
Set by the developer.
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.

Note. Treat as the developer's traffic. Hosted browsers it runs inside (Browserbase, AgentCore, Cloudflare Browser Rendering) may sign requests.

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.

Anthropic in the Verification Ledger

One shared IP list for all three bots; no key directory at claude.ai or claude.com (404, 2026-11-04); nothing for Claude in Chrome. All operators.

IP lists
Reverse DNS
publishes nothing
Key directory
publishes nothing
Cloudflare
not confirmed on Radar (directory slug not found, 2026-11-04)
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 Anthropic rows

Sources

Last reviewed 2026-11-04