This study evaluates the effectiveness of the ImTeCHO intervention in improving maternal, newborn, and child health (MNCH) service coverage in tribal areas of Gujarat, India. Designed as a cluster randomized trial, it assesses the impact of supplying job aids to ASHAs (community health workers) during home visits. The study compares MNCH service delivery between intervention areas and a control group, focusing on key health areas including sexual and reproductive health, maternal and child health, and vaccination/immunization.