This tool provides for an ongoing archive of the JSON sent over EDDN. No validation is performed beyond schema matching. No de-duplication is performed. The objective is simple: capture everything that got sent through EDDN. If your own services missed a section of data, this is where you should be able to find it.
The data is hosted in AWS DynamoDB (at present, only EU West 1).
The documentation for the API can be found in the provided links.