The SPI instrument team in Toulouse has developed an alternative analysis chain which can be accessed via the web page: http://sigma-2.cesr.fr/integral/spidai. It is called SPIDAI (SPI Data Analysis Interface) and it is a tool developed to help the scientific community to analyse the SPI data. Through an interactive interface, it provides default configuration files and guides the user toward reliable results. The manual user describes the procedure and explains how to choose the different parameters at each step. Any analysis ends by displaying a chi-squared array which allows to check the robustness of the results.