Kuldeep Paul

AI search index · Anthropic

Claude-SearchBot

Indexes content to improve the relevance of Claude's search results. Anthropic warns that blocking it may reduce your visibility in Claude's answers.

Compiled by · Updated Oct 29, 2026

7.4%of top sites fully block Claude-SearchBot
423sites blocking, of 5,701 with robots.txt
68of the top 1,000 block it
Operator
Anthropic
Purpose
AI search index
Used for
Claude web search
Obeys robots.txt
Yes
robots.txt token
Claude-SearchBot
User-agent string
Not published by the operator
IP list
Not published
Official docs
support.claude.com
Feeds
Claude

Block Claude-SearchBot in robots.txt

User-agent: Claude-SearchBot
Disallow: /

Blocking a search or user-triggered bot removes your pages from that assistant's answers. To opt out of model training only, block the operator's training crawler instead.

Well-known sites that block Claude-SearchBot

amazon.com #30, msn.com #92, nytimes.com #163, cnn.com #195, theguardian.com #196, launchpad.net #281, amazon.co.uk #326, amazon.de #387, unsplash.com #418, cnbc.com #474, amazon.co.jp #490, quora.com #491, uol.com.br #535, wired.com #570, usatoday.com #617, dailymail.com #619, telegraph.co.uk #629, amazon.fr #632, amazon.ca #633, elpais.com #674, amazon.in #676, lemonde.fr #700, yelp.com #702, amazon.es #714

Ranks from the Tranco list. Full per-site data in the robots.txt study.

Other Anthropic bots

ClaudeBot (model training) · Claude-User (user-triggered fetch) · anthropic-ai (model training) · Claude-Web (user-triggered fetch)

Questions

What is Claude-SearchBot?

Claude-SearchBot is a ai search index bot operated by Anthropic, used for Claude web search. Indexes content to improve the relevance of Claude's search results. Anthropic warns that blocking it may reduce your visibility in Claude's answers.

How do I block Claude-SearchBot?

Add "User-agent: Claude-SearchBot" followed by "Disallow: /" to the robots.txt file at the root of each host you want to protect.

Does Claude-SearchBot respect robots.txt?

Yes. Anthropic documents that Claude-SearchBot honours robots.txt directives.

How many websites block Claude-SearchBot?

In a Oct 29, 2026 analysis of the top 10,000 websites by Kuldeep Paul, 7.4% of sites with a robots.txt file fully disallowed Claude-SearchBot.

Analysis using this data

  1. Who blocks AI crawlers? What 10,000 robots.txt files revealPublishers block training, not answers; half of all blocklists leak; Cloudflare writes the most common AI policy.
  2. The opt-out asymmetry: you can block the small AI engines, not the big oneThe AI surfaces with the most users are the ones publishers can't refuse and can't measure.

← All AI crawlers

How to cite this data

This dataset is free to use, including commercially, under Creative Commons Attribution 4.0. The one rule is attribution:

  1. Credit the source as “Kuldeep Paul, kuldeep.cc” wherever you use a figure, chart or table from it.
  2. Link to this page (https://kuldeep.cc/data/ai-search/crawlers/claude-searchbot), not to the download file, so readers can check the source of every number.
  3. Include the date. These figures change; say “as of Oct 29, 2026” or link to the version you used.
  4. Mark changes. If you filter, recalculate or chart the data yourself, say so (“analysis based on data from…”).
  5. Cite the original source for single figures when you quote one reported number; it is linked in every row.

In running text: according to Kuldeep Paul's Claude-SearchBot — AI crawler directory (kuldeep.cc). More in the methodology.

APA

Paul, K. (2026). Claude-SearchBot — AI crawler directory [Data set]. kuldeep.cc. https://kuldeep.cc/data/ai-search/crawlers/claude-searchbot

MLA

Paul, Kuldeep. "Claude-SearchBot — AI crawler directory." kuldeep.cc, 29 October 2026, https://kuldeep.cc/data/ai-search/crawlers/claude-searchbot.

Chicago

Paul, Kuldeep. 2026. "Claude-SearchBot — AI crawler directory." Dataset. kuldeep.cc. Updated Oct 29, 2026. https://kuldeep.cc/data/ai-search/crawlers/claude-searchbot.

BibTeX

@misc{paul2026claudesearchbot, author = {Paul, Kuldeep}, title = {Claude-SearchBot — AI crawler directory}, year = {2026}, howpublished = {\url{https://kuldeep.cc/data/ai-search/crawlers/claude-searchbot}}, note = {Dataset, CC BY 4.0, updated 2026-10-29} }

HTML link

<a href="https://kuldeep.cc/data/ai-search/crawlers/claude-searchbot">Claude-SearchBot — AI crawler directory</a> (data: Kuldeep Paul, kuldeep.cc)