Consequence. Crawlers have to discover every URL by following links. Pages that are deep, newly published, or poorly linked internally take longer to be found, and some may never be. A sitemap is the most direct way to hand a crawler the full list.
If that is not intended. Publish an XML sitemap and declare it with an absolute URL, e.g. "Sitemap: https://example.com/sitemap.xml". The line is global — it belongs outside any User-agent group and applies to every crawler.
Notice
Crawl-delay is declared 1 time and Google ignores it
Crawl-delay was never part of the standard. Google has never supported it; Bing and Yandex do.
Consequence. Any rate limit intended for Googlebot is not being applied. If the goal was to reduce load from Google specifically, it is not working.
If that is not intended. Set the crawl rate for Google in Search Console instead. Keep the directive if the limit is meant for Bing or Yandex, which do honour it.
Crawl-delay: 4L3
Pass
Search engines can reach the site
All 6 checked search engines are allowed at the site root.
Pass
AI answer engines can reach the site
All 4 checked AI answer engines are allowed at the site root.
Pass
User-triggered AI fetches can reach the site
All 3 checked user-triggered AI fetches are allowed at the site root.
Pass
Social link previews can reach the site
All 5 checked social link previews are allowed at the site root.
Pass
AI training crawlers can reach the site
All 6 checked AI training crawlers are allowed at the site root.
Pass
No indexing directives on the requested page
The page sends no robots meta tag and no X-Robots-Tag header.
Pass
No syntax problems
Every line parses as a directive crawlers understand.
Pass
File size is 47 bytes
Comfortably within the 500 KB that crawlers will read.
