It is currently not possible to configure org.apache.camel.dataformat.xstream.JsonDataFormat to produce standard JSON without the XStream specific root node.
XStream JSON with root node:
With plain Xstream this can be reached via (see https://x-stream.github.io/json-tutorial.html#json-dropping-root )
But I have not found a way to configure the org.apache.camel.dataformat.xstream.JsonDataFormat in that way. So we probably need some change to allow this.