Because these are ancient Sanskrit texts, they were historically kept as palm-leaf manuscripts. You can find digitized PDF versions through scholarly archives: Muktabodha Indological Research Institute : The primary source for Searchable Digital Agamas Archive.org : Often hosts scanned copies of the Vatula Suddha Agama with English or Tamil commentaries. IFP (Institut Français de Pondichéry)

: Describes internal meditation techniques and the awakening of the Kriya Pada

: An edition with Sahasra Pantha Samhita Vyakya, though some pages may be missing in this digital copy on the Internet Archive Vatul Shuddhakhya Tantra (Pt. Vrajavallabha Dwivedi) : A scholarly edition of this ancillary text available for free download Scholarly Articles and Commentaries

Some versions of Vatula Agama might come with translations or annotations. These can be invaluable in understanding complex philosophical and ritualistic sections.