  We describe an algorithmic method to calculate the $T\bar{T}$ deformed
Lagrangian of a given seed theory by solving an algebraic system of equations.
This method is derived from the topological gravity formulation of the
deformation. This algorithm is far simpler than the direct partial differential
equations needed in most earlier proposals. We present several examples,
including the deformed Lagrangian of (1,1) supersymmetry. We show that this
Lagrangian is off-shell invariant through order $\lambda^2$ in the deformation
parameter and verify its SUSY algebra through order $\lambda$.
