VAT Validation MCP Server

import { z } from 'zod'; // EU Member State codes for VAT validation export const EU_MEMBER_STATES = [ 'AT', 'BE', 'BG', 'CY', 'CZ', 'DE', 'DK', 'EE', 'EL', 'ES', 'FI', 'FR', 'HR', 'HU', 'IE', 'IT', 'LT', 'LU', 'LV', 'MT', 'NL', 'PL', 'PT', 'RO', 'SE', 'SI', 'SK' ] as const; // Input validation schemas export const checkVatNumberSchema = z.object({ countryCode: z.enum(EU_MEMBER_STATES, { errorMap: () => ({ message: 'Invalid EU member state code' }) }), vatNumber: z.string().min(1, 'VAT number is required').max(20, 'VAT number too long'), }); export const checkVatTestSchema = z.object({ countryCode: z.enum(EU_MEMBER_STATES), vatNumber: z.enum(['100', '200'], { errorMap: () => ({ message: 'Test VAT number must be 100 (valid) or 200 (invalid)' }) }), }); // VIES API response schemas export const vatValidationResponseSchema = z.object({ valid: z.boolean(), requestDate: z.string(), userError: z.string().optional(), name: z.string().optional(), address: z.string().optional(), requestIdentifier: z.string().optional(), originalVatNumber: z.string().optional(), vatNumber: z.string().optional(), originalCountryCode: z.string().optional(), countryCode: z.string().optional(), }); export const memberStateStatusSchema = z.object({ memberStateCode: z.string(), availability: z.enum(['AVAILABLE', 'UNAVAILABLE', 'TIMEOUT']), }); export const statusResponseSchema = z.object({ availabilityStatus: z.enum(['AVAILABLE', 'UNAVAILABLE']), memberStates: z.array(memberStateStatusSchema), }); export const errorResponseSchema = z.object({ error: z.string(), message: z.string().optional(), details: z.string().optional(), }); // Export types export type CheckVatNumberParams = z.infer<typeof checkVatNumberSchema>; export type CheckVatTestParams = z.infer<typeof checkVatTestSchema>; export type VatValidationResponse = z.infer<typeof vatValidationResponseSchema>; export type StatusResponse = z.infer<typeof statusResponseSchema>; export type MemberStateStatus = z.infer<typeof memberStateStatusSchema>; export type ErrorResponse = z.infer<typeof errorResponseSchema>; export type EUMemberState = typeof EU_MEMBER_STATES[number];