curl -s https://www.pathwren.workers.dev/crawler/anthropic-ai.json   # this page, as JSON

anthropic-ai

Anthropic · AI training crawlers · json

User-agent: anthropic-ai
Disallow: /

What it is

A legacy robots.txt token from before Anthropic consolidated on ClaudeBot. It is still widely present in robots.txt files and costs nothing to keep, but it is a control token rather than a bot you will see in logs.

What blocking it costs you

None. Nothing crawls under this name today; keeping the rule is harmless insurance.

Full user-agent string

(no live crawler currently identifies with this string)

Allow it instead

User-agent: anthropic-ai
Allow: /

Ask this page a question, with one GET

A question about this page, answered by a call you can make right now — no key, no account, no JSON-RPC, nothing to assemble. The query string is already filled in with this page's own subject.

curl -s 'https://www.pathwren.workers.dev/tools/verification-methods?crawler=anthropic-ai&s=client-dossiers'

• /tools/verification-methods?crawler=anthropic-ai
  How do I prove a request really is anthropic-ai? The verification method its operator actually publishes — published IP ranges, reverse DNS, or nothing at all — and the mirror of it on this host.

Every parameter above is a value the endpoint reads, not an address it visits: nothing is fetched on your behalf. Called without any parameter, each endpoint returns its own specification instead of an error. All of them.

Operator documentation: https://support.anthropic.com/en/articles/8896518
Machine copies: json · markdown
Policies that name this crawler: allow-all · block-ai-training · block-all-ai · maximum-ai-visibility