Tallyhouse

ClaudeBot

Anthropic — Training

All crawlers · Agent Accessibility Index

Purpose: Training. Bulk crawling to build model training data.

Anthropic's crawler, collecting web content for training Claude.

15.18%

of the panel names this token in robots.txt and disallows it, for the week of 2026-10-05.

How sites treat this token

StanceDomainsWhat it means
FullBlock121Every path is disallowed for this token.
PartialBlock30Some paths are disallowed for this token; others are not.
Allowed29The token is named and explicitly allowed.
Unmentioned815The file never names this token. This is not consent — the site may still close it off with a blanket rule for every crawler.

ClaudeBot's three-year history

ClaudeBot over time, 16 quarterly periods from 2023-01 to 2026-08.ClaudeBot rose from 0.00% at 2023-01 to 18.30% at 2026-08.0%5%10%15%20%2023-012023-092024-052025-012025-102026-0818.30%

A site in the historical panel first named and disallowed this token in 2024-02; its most recent reading is 18.30%.

Note: this chart reads Common Crawl's own 611-domain historical panel, not the panel behind the stance table above — a different population from the live index panel, so levels are not comparable between the two indices.

Anthropic's other tokens

Publishes separate tokens for training, search and user-initiated fetches, mirroring OpenAI's split. Two older tokens are still widely named in robots.txt files.

TokenPurposePublished rate
Claude-SearchBotSearch8.54%
Claude-UserUser-initiated8.04%
Claude-WebUncertain8.14%
anthropic-aiTraining9.35%

Sites that treat these tokens differently

164 domains in the panel treat Anthropic's tokens differently from one another. The first 25 are shown below.

DomainClaude-SearchBotClaude-UserClaude-WebClaudeBotanthropic-ai
abc.net.auUnmentionedUnmentionedFullBlockFullBlockFullBlock
academia.eduPartialBlockPartialBlockUnmentionedUnmentionedUnmentioned
ad.nlUnmentionedUnmentionedFullBlockFullBlockFullBlock
aftonbladet.seFullBlockUnmentionedFullBlockFullBlockFullBlock
airbnb.comUnmentionedUnmentionedUnmentionedFullBlockPartialBlock
aljazeera.comUnmentionedUnmentionedFullBlockFullBlockFullBlock
amap.comUnmentionedUnmentionedPartialBlockUnmentionedPartialBlock
amazon.caFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.co.jpFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.co.ukFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.co.zaFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.comFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.com.auFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.com.brFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.com.mxFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.deFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.esFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.frFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.inFullBlockFullBlockFullBlockFullBlockUnmentioned
amazon.itFullBlockFullBlockFullBlockFullBlockUnmentioned
amazonvideo.comUnmentionedFullBlockUnmentionedUnmentionedUnmentioned
amplitude.comUnmentionedUnmentionedUnmentionedPartialBlockPartialBlock
android.comPartialBlockUnmentionedUnmentionedPartialBlockPartialBlock
aol.comUnmentionedUnmentionedFullBlockFullBlockFullBlock
as.comFullBlockFullBlockUnmentionedFullBlockUnmentioned