It is a Bhagavatic monotheistic religion having Krsna as its sole worshipable entity and sole-refuge (eka śaraṇa) in him as the only means to his grace. Strongly bhaktic in character with pure devotion (nāma) being the sole practice advocated, it rejects Vedic karmic practices.

https://twitter.com/SankaradevaInfo/status/1181464229288665088

According to Sankaradeva, only by taking sole-refuge in Krsna—the supreme immanent pure personality (paramātmā)—and engaging in his pure devotion consisting primarily in singing (kīrttana) and listening to (śravaṇa) his “birth” and “activities” would the embodied personality

#Sankaradeva (#শঙ্কৰদেৱ), a spiritual and social reformer and a versatile figure, propagated a religion known as eka śaraṇa hari nāma or “the doing of pure devotion to God taking sole-refuge in him"
atributetosankaradeva.org/Sankaradeva.htm Sankaradeva was a very versatile personality. During his entire lifetime, he concentrated his energies on bringing home to the lay populace the message of the Vedantic-Puranic system through diverse media that made easy the comprehension of the philosophico-scientific truths.