Detect Shelf
PluginView detects Shelf, a Web server extensions, by evaluating response headers on publicly reachable pages. Illustrative public indicators associated with Shelf include server: dart:io with Shelf, x-powered-by: Dart with package:shelf. Full fingerprint rules remain proprietary; this page summarizes the signal classes and example indicators used for identification.
Detection looks at response headers across 2 fingerprint rules among the site's public responses.
Websites using Shelf
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Signal classes
PluginView evaluates public page signals in these classes when identifying Shelf. Individual fingerprint rule bodies are proprietary and are not published.
- Response headers
Example public indicators for Shelf
Illustrative indicators derived from public catalog metadata for Shelf. A live scan may match additional proprietary rules beyond these examples.
- server: dart:io with Shelf
- x-powered-by: Dart with package:shelf
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Shelf signature (2 rules) at the time of the scan.
- Does not establish
- A sitewide install of Shelf, an active vendor contract, exclusive use, or that Shelf is still in place today.
How to check a site for Shelf
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Shelf signals.
- 2. PluginView reads only public responses (response headers) and scores them against the Shelf signature set (2 rules).
- 3. Review the confidence score and text explanation for Shelf on the results page.
Commonly implies
A confirmed Shelf match also implies these technologies are present.
FAQ: detecting Shelf
- Can PluginView detect Shelf without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Shelf — typically response headers. It does not bypass authentication or paywalls.
- What category is Shelf?
- Shelf is classified under Web server extensions in the PluginView directory.
- How many fingerprint rules cover Shelf?
- This reference currently tracks 2 fingerprint rules across response headers. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Shelf?
- Illustrative public indicators for Shelf include server: dart:io with Shelf; x-powered-by: Dart with package:shelf. A live scan may match additional proprietary rules beyond these examples.
