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

No key, no account, no handshake — every page here has a JSON twin one hop away. Machine doors: 6 keyless GET tools · documents.json · changes · llms.txt · openapi.json · agent card · mcp · a2a

ClaudeBot

Anthropic · AI training crawlers · json

User-agent: ClaudeBot
Disallow: /


robots.txt token	`ClaudeBot`
User-agent contains	`ClaudeBot`
Operator	Anthropic
Category	AI training crawlers
robots.txt	obeys robots.txt (documented)
Verify by	no published verification method

What it is

Anthropic's bulk crawler, gathering pages that may be used to train Claude models.

What blocking it costs you

Content excluded from training data for future Claude models. No effect on Claude's ability to fetch a link a user gives it.

Full user-agent string

Mozilla/5.0 (compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Allow it instead

User-agent: ClaudeBot
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=claudebot&s=client-dossiers'

/tools/verification-methods?crawler=claudebot
How do I prove a request really is ClaudeBot? 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