The Archival and Philological Platform (Platform A) involves researchers from many fields: mainly philologists specialising in various languages (German, French, English, Italian, Spanish, Latin, and others), but also historians, philosophers and librarian-archivists. The aim of the platform's work is content-related processing of documents belonging to the Autograph Collection from the former Prussian State Library in Berlin, housed in the Jagiellonian Library.

On the basis of the literature on the subject and their own examinations, the researchers identify the documents within the individual units (letters, literary works, notes, personal and historical documents, and iconographic documents) and then arrange them according to a unified scheme and describe them. The description includes identifying the author of the document, the sender and addressee in the case of letters, dating, identifying the place of origin of the manuscript and, where possible, reconstructing the affiliation to earlier collections taking into account historically assigned book signatures. As far as possible, researchers try to identify unknown individuals, and establish missing chronological and topographical data.

At the same time, a database of persons and places is being created, allowing for the unambiguous identification of figures who often appear under different pseudonyms, have different variants of names and surnames as well as taking into account historically changing names of places. In the future, this database will serve as a search tool, linking together documents related to the same people and places. After content-based processing, the description of the document is entered into an appropriate spreadsheet, which organises the metadata according to established standards to create a comprehensive catalogue of documents and thus integrate the entire Autograph Collection into scholarly circulation.

Platform A is coordinated by Professor Jadwiga Miszalska.