I-PostgREST iyiseva yewebhu evulekile ekuvumela ukuthi uguqule noma iyiphi isizindalwazi esigcinwe ku-PostgreSQL DBMS sibe i-RESTful API egcwele ngokugcwele. Isisusa sokubhala i-PostgREST kwakuyisifiso sokubalekela ukuhlelwa kwe-CRUD okwenziwa ngesandla, njengoba lokhu kungaholela ezinkingeni: ukubhala ingqondo yebhizinisi kuvame ukuphindaphinda, ukushaye indiva noma kufake inkimbinkimbi ukwakheka kwedathabhesi; object-relational mapping (ORM mapping) iwukufinyeza okungathembeki okuholela kukhodi esemqoka ehamba kancane futhi engabangela izinkinga zokuphepha. I-PostgREST ibhalwe ku-Haskell futhi isatshalaliswa ngaphansi kwelayisensi ye-MIT.
