Variable: StepTypeDescription

const StepTypeDescription: z.ZodObject<{
  configSchema: z.ZodUnknown;
  dataPaths: z.ZodDefault<z.ZodArray<z.ZodString>>;
  description: z.ZodString;
  outputs: z.ZodDefault<z.ZodArray<z.ZodString>>;
  terminal: z.ZodDefault<z.ZodBoolean>;
  title: z.ZodString;
  type: z.ZodString;
  uiHints: z.ZodOptional<z.ZodObject<{
     fieldOrder: z.ZodOptional<z.ZodArray<z.ZodString>>;
     help: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodString>>;
     labels: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodString>>;
     pickers: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodString>>;
  }, z.core.$strip>>;
}, z.core.$strip>;

One workflow step type as GET /workflow-step-types describes it.