Identification
Its full user-agent string, exactly as it arrives at the gate:
Screaming Frog does not publish a way to verify Screaming Frog SEO Spider's traffic. Treat its user agent as a claim, not proof: anyone can send it.
How to block Screaming Frog SEO Spider
Add these two lines to the robots.txt file at the root of your site. Well-behaved crawlers read it before they crawl, so the change applies from Screaming Frog SEO Spider's next visit. Nothing else on your site needs to change.
# Block Screaming Frog SEO Spider from the whole site User-agent: Screaming Frog SEO Spider Disallow: /
It reads robots.txt by default, but its user can switch that off.
Or let it visit but keep it away from part of the site:
# Let it in, but keep it out of one room User-agent: Screaming Frog SEO Spider Allow: / Disallow: /members/
Observed behaviour
Nothing on record in the last 30 days.
Requested 0 disallowed pages out of 0 requests. Never read robots.txt.
Has never followed the hidden link to /trap/. Either well trained or very lucky.
Where it comes from
The networks Screaming Frog SEO Spider's visits came from:
Nothing on record in the last 30 days.
Networks and countries come from the visitor's IP address, looked up in a local copy of the DB-IP database. The addresses themselves are never stored.
Questions site owners ask
Does Screaming Frog SEO Spider respect robots.txt?
We can't say yet. It has not fetched robots.txt here, and it has not touched a disallowed page either.
Will blocking Screaming Frog SEO Spider hurt my search rankings?
No. SEO crawlers build tools for marketers. Blocking them hides your links from those tools, not from search engines.
How often does Screaming Frog SEO Spider visit?
Here, about 0 requests a day over the last week. Visits to your site depend on its size, how often it changes, and how many links point to it.