The apex-human capital index is a tool developed by Aventus Partners to measure the value of human capital within organizations, particularly in the service sector. It uses a set of human capital and financial ratios, with seven key parameters influencing the ratings, ranging from AAA to D, to assess the investment in human capital and its return on investment. The index aims to provide a reliable measure for organizations to evaluate their workforce's contribution to financial performance and make better-informed decisions regarding human capital management.