Hi, you can do this by overriding

signUpPOST

. Something like this should work:

EmailPassword.init({
        override: {
            apis: (originalImplementation) => ({
                ...originalImplementation,
                signUpPOST: async function (input) {
                    const email = input.formFields.find((f) => f.id === "email").value;
                    const password = input.formFields.find((f) => f.id === "password").value;

                    return EmailPassword.signUp(email, password);
                },
            }),
        },
        // ...
    },