He kikowaena pūnaewele wehe ʻo PostgREST e hiki ai iā ʻoe ke hoʻololi i kekahi ʻikepili i mālama ʻia ma kahi PostgreSQL DBMS i kahi API RESTful piha. ʻO ke kumu o ka kākau ʻana iā PostgREST ʻo ia ka makemake e haʻalele i ka hoʻolālā CRUD manual, no ka mea hiki i kēia ke alakaʻi i nā pilikia: ʻo ke kākau ʻana i ka loiloi pāʻoihana e hoʻopā pinepine, hoʻowahāwahā a paʻakikī paha i ka ʻōnaehana waihona; ʻO ka palapala ʻāina pili pili (ORM mapping) he abstraction hiki ʻole ke alakaʻi i ka code imperative lohi a hiki ke hoʻopilikia i ka palekana. Ua kākau ʻia ʻo PostgREST ma Haskell a hāʻawi ʻia ma lalo o ka laikini MIT.