WhatsApp Business MCP Server

Instructions

Implementation Reference

• src/whatsapp-client.ts:200-205 (handler)

  The actual implementation of the markMessageRead method that communicates with the WhatsApp API.

  async markMessageRead(messageId: string) {
    return this.request(`/${this.config.phoneNumberId}/messages`, "POST", {
      messaging_product: "whatsapp",
      status: "read",
      message_id: messageId,
    });

• src/index.ts:270-280 (registration)

  MCP tool registration for mark_message_read, including its schema and execution hook.

  server.tool(
    "mark_message_read",
    "Mark a received message as read (blue checkmarks). Use the message_id from a received webhook.",
    {
      message_id: z.string().describe("The wamid of the message to mark as read"),
    },
    async ({ message_id }) =>
      executeWithHooks("mark_message_read", { message_id }, config, () =>
        wa.markMessageRead(message_id)
      )
  );