Charges of supergravity

We study conserved charges of $\mathcal{N}=1$ supergravity formulated as a constrained BF theory based on the $\text{OSp}(1\mathrm{\mid }4)$ superalgebra. Using the covariant phase space formalism, we derive bulk and boundary contributions to the symplectic structure and construct charges associated with Lorentz transformations, supersymmetry, translations, and diffeomorphisms. We show that the algebra of boundary charges reproduces the expected superalgebra, while translational charges vanish on-shell due to the super-torsion constraint, leaving Lorentz and supersymmetry as the non-trivial generators.