[AI crawlers](https://www.crawlreadiness.com/crawlers) · Anthropic · Retired token · Not scored

# anthropic-ai

anthropic-ai is Anthropic's retired token crawler token. Blocking it costs nothing in the AI readiness score. 14.1% of the top 1,000 websites with a robots.txt block it.

An older Anthropic token that its current crawler documentation no longer lists. Kept so a robots.txt that names it is read correctly; it is not scored.

## Where this comes from

- **Retired by the vendor.** Source: [support.claude.com](https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler)
- **Robots.txt behaviour undocumented.**
- **Listed, not scored.** It cannot keep a site out of today's answers, so the check shows a block without deducting for it.

## In the top 1,000 websites

- **14.1% block it in robots.txt** (80 of the 569 sites with a robots.txt), as of 2026-10-12.
- Method, limits and the full data: [the October 2026 study of the top 1,000 websites](https://www.crawlreadiness.com/research/ai-crawler-access-october-2026).

## What blocking it costs

Nothing: the vendor no longer sends this name. A rule for it is harmless and is not scored.

## The robots.txt lines

To let it in (a group that names the crawler replaces any wildcard rules for it, so this also lifts a `User-agent: *` block):

```
User-agent: anthropic-ai
Allow: /
```

To keep it out:

```
User-agent: anthropic-ai
Disallow: /
```

A rule in robots.txt is a request. Whether this crawler honours it is undocumented. The [robots.txt generator](https://www.crawlreadiness.com/tools/robots-txt) writes a whole file with the same split: block the training crawlers, keep the search and answer crawlers.

## Also from [Anthropic](https://www.crawlreadiness.com/crawlers/vendor/anthropic)

- [`ClaudeBot`](https://www.crawlreadiness.com/crawlers/claudebot) · Training only
- [`Claude-User`](https://www.crawlreadiness.com/crawlers/claude-user) · Fetches when a user asks
- [`Claude-SearchBot`](https://www.crawlreadiness.com/crawlers/claude-searchbot) · AI search index
- [`Claude-Web`](https://www.crawlreadiness.com/crawlers/claude-web) · Retired token

## Does anthropic-ai get through on your site?

[Run the free check](https://www.crawlreadiness.com/): it reads your robots.txt against all 51 crawlers and tells you which ones can read you, and what to change.

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Source: https://www.crawlreadiness.com/crawlers/anthropic-ai