SMVertex is a library of SM vertices. Currently it implements only few vertices and is not really useful.
This is the \gamma W W vertex (all momenta ingoing)
SMVertex["AWW", p, \[Mu], q, \[Nu], k, \[Rho]]-i \;\text{e} \left(\bar{g}^{\mu \rho } \left(\overline{p}-\overline{k}\right)^{\nu }+\bar{g}^{\nu \rho } \left(\overline{k}-\overline{q}\right)^{\mu }+\bar{g}^{\mu \nu } \left(\overline{q}-\overline{p}\right)^{\rho }\right)
This is the HHH-coupling
SMVertex["HHH"]-\frac{3 i \;\text{e} m_H^2}{2 m_W \left(\left.\sin (\theta _W\right)\right)}
This is the H e-coupling
SMVertex["eeH"]-\frac{i \;\text{e} m_e}{2 m_W \left(\left.\sin (\theta _W\right)\right)}