Open APIs

Hello group,
we have a challenge when querying the Product Inventory Management API with a filter to retrieve installed products connected through product relationships. 
In certain scenarios, we require returning all linked products alongside the initially found ones. What would be the most appropriate approach to tackle this issue?

Thank you

Proxy API, API gateway, API aggregator, API orchestrators, GraphQL etc should have these API orchestration and stiching capabilities.
for instance, for our frontend, a BFF with GraphQL does that and present to the frontend a single API payload with the entire bundle structure.