The main purpose of the UAP Transparency Act is to ensure that the public has access to information regarding unidentified anomalous phenomena, commonly known as UAPs. This legislation aims to promote transparency by requiring federal agencies to release all relevant documents, reports, and records related to these phenomena. Key provisions of the Act include a requirement for the President to direct federal agencies to declassify and make publicly available all documents concerning UAPs within 270 days of the law being enacted.