Hi,
We have several things that you can use:
- ODATA. Delphi side has TDAODataSchemaDispatcher that works similar to .NET. we have several posts here, for example Any samples how to get started with crud operations using odata or json with relativity server? topic.
- HttpAPI (REST support on the Remoting SDK level)
- JsonDataStreamer can read/write DataAbstract tables and their deltas in json format.