This article argues for the reassessment of Indrabhuti’s Jnanasiddhi in the light of newly discovered primary witnesses and previously unnoticed relations to other works. Presumably composed in the late eighth to early ninth century CE, it belongs to the earlier phase of Tantric Buddhism, a transitional period between the predominance of the Yoga- and Mahayogatantras to the later Yoginitantras, and relates to a variety of important scriptures of this formation. While this article briefly discusses the origins, authorship, contents and context (...) of the Jnanasiddhi, including a brief overview of its modern scholarship, it also highlights its intertextual relations with and notable influences upon other tantric works of major importance. The Jnanasiddhi stands out as a tantric scripture of paramount importance, and we attempt to demonstrate the necessity of its reassessment with recourse to hitherto neglected but nonetheless vital sources that have only recently come to light. (shrink)