When calling the getPosts method, you can specify an algorithm. The options are: "recommendations", "all-posts", and "all-posts-non-filtered".
Link: https://useorbis.com/documentation/sdk/api-documentation/getPosts
The problem is that when using the recommendations algorithm, the getPosts method ignores your context and returns back posts from various different contexts. Which makes this algorithm useless for a specific context.
@Baptiste - Could the recommendations algorithm be used for a specified context only?