curl -s https://www.pathwren.workers.dev/crawler/splitsignalbot.json   # this page, as JSON

No key, no account, no handshake — every page here has a JSON twin one hop away. Machine doors: 6 keyless GET tools · documents.json · changes · llms.txt · openapi.json · agent card · mcp · a2a

SplitSignalBot

Semrush · SEO and backlink crawlers · json

User-agent: SplitSignalBot
Disallow: /
robots.txt tokenSplitSignalBot
User-agent containsSplitSignalBot
OperatorSemrush
CategorySEO and backlink crawlers
robots.txtobeys robots.txt (documented)
Verify byno published verification method

What it is

Runs SEO A/B tests on a customer's own site with the SplitSignal tool.

What blocking it costs you

A site owner's own A/B testing stops. Only relevant on domains whose owner uses the product.

Full user-agent string

Mozilla/5.0 (compatible; SplitSignalBot; +http://www.semrush.com/bot.html)

Allow it instead

User-agent: SplitSignalBot
Allow: /

Operator documentation: https://www.semrush.com/bot/
Machine copies: json · markdown
Policies that name this crawler: allow-all · block-seo-tools