The FCS Endpoint Validator for testing SRU/FCS Conformance 
has been completely rewritten and is now publicly available! It is based on the previous CLARIN-FCS endpoint conformance tester (Code) but now uses JUnit5 as test engine with an updated and extended web interface using Vaadin 24.3.5. A few new test cases have been added with more to come. 
The Validator is located at https://fcs-validator.data.saw-leipzig.de/ or via the alias https://www.clarin.eu/fcsvalidator.
The code can be found on Github: GitHub - saw-leipzig/fcs-endpoint-validator: FCS SRU Endpoint Validator for testing SRU/FCS Protocol Conformance
Please check it out, especially if you are developing or running an FCS Endpoint. Any feedback is welcome.