LINE Bot MCP Server (SSE Support)

Instructions

Implementation Reference

• src/tools/pushTextMessage.ts:37-53 (handler)

  The tool execution handler that calls the messaging API.

  async ({ userId, message }) => {
    if (!userId) {
      return createErrorResponse(NO_USER_ID_ERROR);
    }
  
    try {
      const response = await this.client.pushMessage({
        to: userId,
        messages: [message as unknown as messagingApi.Message],
      });
      return createSuccessResponse(response);
    } catch (error) {
      return createErrorResponse(
        `Failed to push message: ${error.message}`,
      );
    }
  },

• src/tools/pushTextMessage.ts:30-54 (registration)

  Tool registration using server.tool.

  server.tool(
    "push_text_message",
    "Push a simple text message to a user via LINE. Use this for sending plain text messages without formatting.",
    {
      userId: userIdSchema,
      message: textMessageSchema,
    },
    async ({ userId, message }) => {
      if (!userId) {
        return createErrorResponse(NO_USER_ID_ERROR);
      }
  
      try {
        const response = await this.client.pushMessage({
          to: userId,
          messages: [message as unknown as messagingApi.Message],
        });
        return createSuccessResponse(response);
      } catch (error) {
        return createErrorResponse(
          `Failed to push message: ${error.message}`,
        );
      }
    },
  );