I have just published version 1.0.0 of a micronaut-json-api library to Maven Central. implementation("io.github.baylorpaul:micronaut-json-api:1.0.0")

At this time, there are still some items to be supported, such as "links", but it's quite usable.

It supports:

1. Entity mapping to JSON:API resource(s)
2. A processor for an "include" query parameter. E.g. "?include=author.address,publishingCompany"
3. Error response processor
4. Page and Slice responses
5. Deserializing "data" fields into corresponding JsonApiResource or JsonApiArray
6. Transform JSON:API resource(s) into other Java classes, such as entities