AI agent directory / SplitSignalBot
SplitSignalBot
Crawler from Semrush
Crawls sites for SplitSignal, Semrush's tool for running SEO A/B tests.
SplitSignalBot is the bot for SplitSignal, a Semrush tool. Semrush says SplitSignal is used to create SEO A/B tests on your website.
Semrush's bot page gives only the robots.txt token for this bot, not a full user-agent string.
| Run by | Semrush |
|---|---|
| Type | Crawler |
| Purpose | Undeclared |
| Acts for | Its operator |
| robots.txt token | SplitSignalBot |
| Documentation | Semrush's documentation |
How Airglow identifies it
- DeclaredIt names itself in the User-Agent:
SplitSignalBot.
Every visit in Airglow says which of these applied, so you can decide how much to trust it.
Seeing it on your site
It reads pages without running JavaScript, so Airglow counts it through a server connection (Cloudflare). It's labeled as context, not replayed.
Allowing or blocking SplitSignalBot
SplitSignalBot reads the SplitSignalBot group in your robots.txt. To keep it out of the whole site:
User-agent: SplitSignalBot Disallow: /
Airglow shows, for every agent that visits, whether your robots.txt lets it in, and helps you write rules by purpose (training, search, acting for a person).
Blocking one Semrush tool doesn't block the others
Semrush uses a separate robots.txt token for each tool. A group for SplitSignalBot does not cover SemrushBot, SiteAuditBot or the other tokens on Semrush's bot page. Add a group for each one you want to stop.
Questions
What is SplitSignalBot?
It is the bot for SplitSignal, Semrush's tool for creating SEO A/B tests on a website.
How do I block SplitSignalBot?
Add User-agent: SplitSignalBot and Disallow: / to the robots.txt in your site's top directory. Semrush documents this token on its bot page.
Is it an AI crawler?
No. Semrush describes it as part of its SEO tools. It does not say the data is used to train AI models.
Other agents from Semrush
Sources
Last reviewed November 10, 2026.
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