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AnthropicLive fetcher

Claude-Web

Claude-Web is a reported Anthropic-related token seen in public crawler registries and Trakkr detection, but absent from Anthropic’s current bot documentation.

Anthropic's current documentation does not list Claude-Web. Do not treat a matching string as proof of Anthropic traffic.

Get the robots.txt ruleRecord source
Is Claude-Web allowed on your site?4 Anthropic bots

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

robots.txt token
Claude-Web
Follows robots.txt
Not documented
How to verify it
Not published
Last checked
21 July 2026

Should you block Claude-Web?

There is little to gain. Anthropic does not document Claude-Web, so a rule naming it controls none of its documented crawlers. Write rules for ClaudeBot, Claude-SearchBot and Claude-User instead.

What blocking each Anthropic bot does
Anthropic botJobIf you block it
ClaudeBotTrainingDisallowing 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.
Claude-WebThis pageUser fetchA matching user-agent is not enough to prove Anthropic origin or infer training, search, or retrieval purpose. Use Anthropic’s documented bot tokens for policy decisions.

About robots.txtAnthropic has not documented whether Claude-Web follows robots.txt, so a rule is a request, not a guarantee.

robots.txt
User-agent: Claude-Web
Disallow: /

Asks Claude-Web 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?

Claude-Web fires when a real user's question pulls in your page. To know how often Claude reaches for your brand at all, track your brand mentions in Claude.

Spot it in your logs.

Match the name, then check where the request came from. Anyone can copy a user-agent.

Reported user-agentsource
Claude-Web

This string comes from a public crawler registry or observed naming, not current operator documentation.

  1. 1

    Match the name

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

  2. 2

    Check the source

    Anthropic publishes no IP ranges, reverse DNS or signatures for Claude-Web in the sources here, so it cannot be verified. Treat matches as unconfirmed.

Serve the content in HTML

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

Anthropic’s current public documentation lists ClaudeBot, Claude-SearchBot, and Claude-User, not Claude-Web.

How active is Claude-Web?

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

3%

of connected sites saw Claude-Web in the four weeks to 25 October 2026. That is 3 of 104.

100%75%50%25%1%
Claude-Web visited between 0% and 15% of connected sites each week from 27 July 2026 to 25 October 2026.

Share of connected sites it visited each week

Rank by reach
26 of 26
Typical site, per week
Too few sites
Sites reached, 13 weeks
15 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. 26Claude-Web3%
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 Claude-Web. 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.

Claude-Web is a reported Anthropic-related token seen in public crawler registries and Trakkr detection, but absent from Anthropic's current bot documentation. This record has no current Anthropic source, so treat a matching request as unverified.

Sources.

Reported, not operator verified. Operator facts and Trakkr’s measurements keep separate dates.

  1. [1]
    Reported crawler reference

    Reported, not operator verified · checked 21 July 2026

    github.com/ai-robots-txt/ai.robots.txt/blob/main/table-of-bot-metrics.md
  2. [2]
    Anthropic current 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

Last source check 21 July 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, Claude-Web included, visit which pages each day, and whether the answers they feed mention you.

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