What is CCBot? AI crawler guide
CCBot is a crawler or fetcher associated with Common Crawl. See source-graded user-agent, robots.txt, verification, and observation guidance.
What is CCBot?
CCBot is a documented Common Crawl crawler or fetcher. Common Crawl's crawler for building public web crawl datasets used by researchers and AI builders.
Evidence status
| Field | Value |
|---|---|
| Evidence | Officially documented |
| Lifecycle | Active |
| Purpose | training |
| robots.txt posture | honors |
| Source checked | 2026-06-11 |
Documented user-agent
CCBot/2.0 (https://commoncrawl.org/faq/)
CCBot collects pages for model training. Training inclusion is not the same as being cited, so measure where AI answers actually cite your site before drawing conclusions from crawl logs.
robots.txt allow example
User-agent: CCBot Allow: /
robots.txt block example
User-agent: CCBot Disallow: /
What the rule can and cannot do
Robots.txt expresses an access policy to compliant automated crawlers. It does not authenticate the sender, remove content already collected, or guarantee that a model will use or not use content.
How to verify a request
- Match the complete documented user-agent where one exists. A match is only a clue.
- Look for operator-published IP ranges, reverse DNS, or signed-request guidance. None is attached to this record.
- Keep the observed request, operator documentation, and any inference as separate fields.
JavaScript behavior
The cited operator material does not verify JavaScript rendering. Serve useful HTML before client-side JavaScript where possible.
Related bots
- AI2Bot: Also tracked as a training crawler.
- KimiBot: Also tracked as a training crawler.
- MistralAI-Training: Also tracked as a training crawler.
- GPTBot: Also tracked as a training crawler.
- Meta-ExternalAgent: Also tracked as a training crawler.
- ICC-Crawler: Also tracked as a training crawler.
- LAIONDownloader: Also tracked as a training crawler.
- ClaudeBot: Also tracked as a training crawler.
- TerraCotta: Also tracked as a training crawler.
- CCBot: CCBot is the glossary definition behind this crawler guide.
- AI Training Opt-Out: CCBot is a training crawler tied to this policy decision.
- GrokBot: Also tracked as a training crawler.
Frequently Asked Questions
What is CCBot?
CCBot is a officially documented crawler or fetcher record associated with Common Crawl.
What user-agent does CCBot use?
CCBot/2.0 (https://commoncrawl.org/faq/). Check the evidence status before attributing a matching request.
Can CCBot be blocked in robots.txt?
The record identifies CCBot as the token to review. Robots.txt is a request policy, not proof of model use or non-use.
How can I verify a CCBot request?
Treat the user-agent as a clue and look for operator-published IP, reverse-DNS, or signature guidance.
Data & Sources
- Common Crawl documentation - Primary source for CCBot crawler details.