Coaccessibility measures how different age groups can reach urban amenities on foot, providing indicators of accessibility equity and age-diverse access. Purpose of Tool: The coaccessibility tool is an open-source Python library that computes demographic breakdowns of individuals who can walk to urban amenities (points of interest) within given walking time thresholds (5, 10, 15 minutes) across a street-network. It quantifies how many children, adults and elderly persons can