PostgREST is an open web server that allows you to turn any database stored in the PostgreSQL DBMS into a full-fledged RESTful API. The motivation for writing PostgREST was the desire to get away from manual CRUD programming, as this can lead to problems: writing business logic often duplicates, ignores, or complicates the database structure; object-relational mapping (ORM mapping) is an unreliable abstraction that leads to slow imperative code and can cause security problems. PostgREST is written in Haskell and licensed under the MIT license.