Skip to content

See where you stand

Change it

Works withWordPressShopifyWebflowGitHubGoogleSlackAll integrations
FixesFixes now ship to WordPress, Shopify, Webflow and GitHub

By team

By goal

Done for you

Not sure where to start? Take a guided tour.Book a demo
Customer storyHow the voice AI company Futuro grew its traffic3×AI traffic in 60 days

Learn

Data and research

FreeAI Site GraderAI Query Scannerllms.txt GeneratorAll free tools
Open dataWhere AI sends people, across more than 6,000 sites

AnthropicTraining crawler

ClaudeBot

ClaudeBot is an Anthropic crawler for public web content that could contribute to Claude model training.

Training only. It does not decide whether you appear in answers.

Get the robots.txt ruleAnthropic documentation
Is ClaudeBot allowed on your site?3 Anthropic bots

Reads your live robots.txt and applies the same rules these crawlers use. Nothing is stored.

robots.txt token
ClaudeBot
Follows robots.txt
Yes, documented
How to verify it
Published IP ranges
Last checked
18 August 2026

Should you block ClaudeBot?

Only if you want your pages kept out of training. Claude finds and cites pages through Claude-SearchBot and Claude-User, which a ClaudeBot rule does not touch.

What blocking each Anthropic bot does
Anthropic botJobIf you block it
ClaudeBotThis pageTrainingDisallowing ClaudeBot expresses a training-data opt-out for future compliant requests. A crawler log cannot confirm whether content entered a training dataset.
Claude-SearchBotSearchDisallowing it can reduce Claude search discovery. Allowing it does not guarantee indexing, ranking, citation, or referral traffic.
Claude-UserUser fetchDisallowing it asks the documented fetcher not to retrieve covered paths. A matching request does not prove a page was cited in a Claude answer.

From Anthropic’s documentationEach Anthropic bot has its own robots.txt token, so blocking ClaudeBot leaves Claude-SearchBot and Claude-User alone.

robots.txt
User-agent: ClaudeBot
Disallow: /

Asks ClaudeBot not to crawl any page. Other Anthropic bots are unaffected. Add it to the robots.txt file at the root of your site, above any wider rules.

Ignored robots.txt?

Allowing ClaudeBot creates the possibility of retrieval. To find out whether Claude actually cites or recommends you, track your Claude mentions over time.

To see why ClaudeBot access is worth checking rather than assuming, read the fortnight one site spent unblocking crawlers, and what changed after.

Also seen under Anthropic’s name, but not in its current documentation: Claude-Web, Claude-Code, anthropic-ai. Rules naming them control no documented Anthropic crawler.

Spot it in your logs.

Match the name, then check where the request came from. Anyone can copy a user-agent. Search your own logs for ClaudeBot.

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

Version numbers change. Match the highlighted name, not the whole string.

  1. 1

    Match the name

    Search your server or CDN log for ClaudeBot, case-insensitive. A match is a clue, not proof.

  2. 2

    Check the published IP ranges

    Anthropic says IP blocking is not a durable opt-out because it can prevent the crawler from reading robots.txt. claude.com/crawling/bots.json

Is this really ClaudeBot?

Published addresses

No log handy?

Paste an address that claims to be ClaudeBot. It is checked against Anthropic’s published list. Nothing is stored.

Check any crawler’s address

Serve the content in HTML

The cited operator material does not verify JavaScript rendering. Serve useful HTML before client-side JavaScript where possible.

How active is ClaudeBot?

Measured across the sites connected to Trakkr, 27 July 2026 to 25 October 2026.

84%

of connected sites saw ClaudeBot in the four weeks to 25 October 2026. That is 87 of 104.

100%75%50%25%82%
ClaudeBot visited between 75% and 87% of connected sites each week from 27 July 2026 to 25 October 2026.

Share of connected sites it visited each week

Rank by reach
2 of 26
Typical site, per week
169 requests
Sites reached, 13 weeks
107 of 135

Most widespread AI crawlers

Share of connected sites each one visited, last four weeks.

  1. 1OAI-SearchBot84%
  2. 2ClaudeBot84%
  3. 3GPTBot67%
  4. 4Amazonbot61%
  5. 5ChatGPT-User56%
  6. 6PerplexityBot56%
  7. 7Applebot51%
  8. 8Bytespider48%
All 26 measured crawlers
How this is measured

Finalized daily crawler summaries from sites connected to Trakkr, grouped by the crawler named in each request. Trakkr’s own site is excluded. A site counts as reached in a week when it logged at least one request from ClaudeBot. The typical figure is the median weekly requests among the sites it reached.

  • This is a sample of connected sites, not the whole web.
  • A matching user-agent does not prove the named operator sent the request.
  • Requests are not unique pages, training use or citations.
  • Crawlers seen on fewer than 10 sites are not shown. Classic search crawlers such as Googlebot are not collected on every site, so they are left out.

Questions, answered.

ClaudeBot is an Anthropic crawler for public web content that could contribute to Claude model training.

Sources.

Officially documented. Operator facts and Trakkr’s measurements keep separate dates.

  1. [1]
    Anthropic crawler documentation

    Officially documented · checked 18 August 2026

    support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler

First verified 18 August 2026. Last source check 18 August 2026. Activity measured to 25 October 2026.

Changes

Anthropic confirmed its current three-bot splitAnthropic documents ClaudeBot for training, Claude-SearchBot for search, and Claude-User for user-directed retrieval.
All AI crawlers

See which AI crawlers read your site.

Trakkr shows which bots, ClaudeBot included, visit which pages each day, and whether the answers they feed mention you.

14-day free trial. Cancel anytime.