In the recent tender document published by cOAlition S for the development of a Journal Checker Tool (JCT), it is stated very clearly that DOAJ is the preferred source of data for the gold open access journal compliance route. DOAJ already collects and publishes the 3 pieces of metadata which must be included in the first iteration of the JCT. 

DOAJ has decided that it will not officially partner with any provider bidding for the tender and neither will it submit a joint bid with a provider. Instead, the DOAJ team is focusing on the changes needed to the platform so that it is ready for future iterations of the JCT. Providers submitting a tender to cOAlition S should be aware that these changes have costs and these will need to be covered. 

DOAJ will gladly work with all parties submitting a tender and provide them with a breakdown of those costs, as is stated as required on page 6 of the tender document.