# ClaudeBot

> ClaudeBot is Anthropic's crawler for collecting pages that may be used to train AI models. Here's how to recognize it and check a request really is it.

## ClaudeBot facts

- **Operator:** Anthropic
- **Type:** Crawler
- **Why it fetches:** Collects training data
- **User agent contains:** `ClaudeBot`
- **Verified by:** published IP ranges
- **Operator's documentation:** [support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler](https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler)

## How to tell a real ClaudeBot from an impostor

Anyone can put "ClaudeBot" in a user agent. What can't be faked is below.

- **Check the address.** Anthropic publishes the IP ranges ClaudeBot uses: [claude.com/crawling/bots.json](https://claude.com/crawling/bots.json). A request whose user agent says ClaudeBot from an address outside them is an impostor.

## How Punchline counts ClaudeBot

Punchline labels a request that names ClaudeBot with how sure it is: **verified** or **declared** when the evidence checks out, a lower tier when it can't be checked, and **impostor** when the evidence contradicts it. Each visit is counted under Anthropic, with its purpose, so you can see whether ClaudeBot is reading your site and which pages it reads. [How it works](https://punchlineanalytics.com/how-it-works) · [Known agents](https://punchlineanalytics.com/docs/agents)

[See which agents read your site](https://punchlineanalytics.com/reveal)