For any Lie group $G$, we construct a $G$\--equivariant analogue of symplectic capacities and give examples when $G=\mathbb{T}^k\times\mathbb{R}^{d-k}$, in which case the capacity is an invariant of integrable systems. Then we study the continuity of these capacities, using the natural topologies on the symplectic $G$\--categories on which they are defined. This work is joint with Alvaro Pelayo and Alessio Figalli.