Regarding the Shri Sai Satcharita, what can be said about the authenticity and sources of the experiences described within it?

The stories and leelas within the Shri Sai Satcharita are considered highly reliable. According to the information in Chapter 0, this is because a significant portion of the events were seen by the author, Annasaheb, with his own eyes. The remainder of the content came from experiences that other devotees had, either in person or in their dreams. These devotees communicated their stories directly to Annasaheb, who then simply dressed these factual accounts in a poetic and beautiful garment with his graceful writing style. Many of these contributing devotees were still alive when the book was written.