Prats organised exhibitions for leading Iberian artists including Salvador Dalí, Pablo Picasso, Alexander Calder and his good friend Miró.

He was also associated with Paul Klee, Max Ernst, Josep Vicenç Foix and Joan Brossa.

Prats together with rationalist architect Josep Lluis Sert and avant-garde photographer Joaquim Gomis, founded the ADLAN (Amics de l'Art Nou, i.e. Friends of New Art) association, which brought together a variety of different people interested in new trends in the arts.

The association lasted from 1932 to 1936 and the beginning of the Spanish Civil War.

[1] Prats admired Miró's ability to make things from found objects like those in The Caress of a Bird.