ClaudeBot
Run by Anthropic
How to detect ClaudeBot
ClaudeBot names itself in its user agent, but anyone can copy a user agent, so it is detected by confirming the user agent against other signals: source IP confirmed as the operator's own network; and how the session clicks, types, moves and navigates matches an automated agent.
- Detection method
- Self-declaredThe agent names itself in its user agent, and Verisoul confirms it with network, device or behavioral data. A user agent alone is never enough.
- Signals that identify it
- NetworkSource IP confirmed as the operator's own network
- DeviceNames itself as ClaudeBot in its user agent, which we check against the rest of the session
- BehavioralHow the session clicks, types, moves and navigates matches an automated agent
Every signal Verisoul checks for ClaudeBot
ClaudeBot names itself in its user agent. Anyone can copy that, so we only label a session ClaudeBot when the other signals check out too.
- Not used
Cryptographic
Not needed to identify it
- Used
Network
Source IP confirmed as the operator's own network
- Used
Device
Names itself as ClaudeBot in its user agent, which we check against the rest of the session
- Used
Behavioral
How the session clicks, types, moves and navigates matches an automated agent
How often you'll see it
Very common
About 9 to 12% of global crawler traffic in September 2026, per Cloudflare Radar
More from Anthropic
- Claude-SearchBotAnthropic's crawler that indexes pages for Claude's web search.Self-declaredHow common: Common
- Claude CodeAnthropic's coding agent, fetching pages from a developer's terminal, editor or the cloud.Self-declaredHow common: Uncommon
- Claude-UserFetches a page when a person asks Claude about it.Self-declaredHow common: Uncommon
- Claude desktop appAnthropic's Claude app for Mac and Windows, browsing for a person.Self-declaredHow common: Very uncommon
- Claude DuetAnthropic's cloud browser that Claude uses to browse the web and carry out tasks for a person.Self-declaredHow common: Growing
Questions about ClaudeBot
How do you detect ClaudeBot?
ClaudeBot names itself in its user agent, but anyone can copy a user agent, so it is detected by confirming the user agent against other signals: source IP confirmed as the operator's own network; and how the session clicks, types, moves and navigates matches an automated agent.
What is ClaudeBot?
ClaudeBot is Anthropic's crawler that collects public pages for model training.
Does ClaudeBot identify itself?
Partly. ClaudeBot names itself in its user agent, but user agents are easy to copy, so the name alone is not proof.
Can a bot pretend to be ClaudeBot?
A bot can copy ClaudeBot's user agent or markers, but the network, device and behavior signals will not match, so it is not labeled ClaudeBot.
How common is ClaudeBot?
Very common. About 9 to 12% of global crawler traffic in September 2026, per Cloudflare Radar.
What does the Verisoul API return for ClaudeBot?
Every session Verisoul identifies as ClaudeBot carries an agent block with id "claudebot", name, provider, type "ai_crawler", detection_method "self_declared" and the detection_signals used (network, behavioral). Build rules on the id, type and detection method.