WhatsApp Business MCP Server

Instructions

Implementation Reference

• src/index.ts:300-317 (registration)

  Tool registration for "create_template" which takes input parameters and calls the wa client.

  server.tool(
    "create_template",
    "Create a new message template for approval by Meta. Templates are required for outbound messages outside the 24-hour window.",
    {
      name: z.string().describe("Template name (lowercase, underscores only)"),
      language: z.string().default("pt_BR").describe("Template language code"),
      category: z
        .enum(["MARKETING", "UTILITY", "AUTHENTICATION"])
        .describe("Template category — affects pricing and approval rules"),
      components: z
        .array(z.record(z.string(), z.unknown()))
        .describe("Template components: HEADER, BODY, FOOTER, BUTTONS"),
    },
    async ({ name, language, category, components }) =>
      executeWithHooks("create_template", { name, language, category }, config, () =>
        wa.createTemplate({ name, language, category, components })
      )
  );

• src/whatsapp-client.ts:220-231 (handler)

  Implementation of createTemplate in the WhatsAppClient class, which makes the API call.

  async createTemplate(template: {
    name: string;
    language: string;
    category: "MARKETING" | "UTILITY" | "AUTHENTICATION";
    components: unknown[];
  }) {
    return this.request(
      `/${this.config.businessAccountId}/message_templates`,
      "POST",
      template
    );
  }