MCP Apple Calendars

Implementation Reference

• src/index.ts:71-93 (handler)

  MCP handler function for the 'createCalendar' tool. It calls the helper function calendars.createCalendar(title, color) and formats the response as MCP content or error.

  async ({ title, color }) => {
    try {
      const result = await calendars.createCalendar(title, color);
      return {
        content: [{ 
          type: "text", 
          text: JSON.stringify({ 
            success: true, 
            message: "Calendar created", 
            calendar: result 
          }) 
        }]
      };
    } catch (error) {
      return {
        content: [{ 
          type: "text", 
          text: JSON.stringify({ error: "Failed to create calendar" }) 
        }],
        isError: true
      };
    }
  }

• src/index.ts:67-70 (schema)

  Input schema using Zod validation: required 'title' string and optional 'color' string.

  { 
    title: z.string(),
    color: z.string().optional()
  },

• src/index.ts:65-94 (registration)

  Registration of the 'createCalendar' tool with the MCP server using server.tool(name, schema, handler).

  server.tool(
    "createCalendar",
    { 
      title: z.string(),
      color: z.string().optional()
    },
    async ({ title, color }) => {
      try {
        const result = await calendars.createCalendar(title, color);
        return {
          content: [{ 
            type: "text", 
            text: JSON.stringify({ 
              success: true, 
              message: "Calendar created", 
              calendar: result 
            }) 
          }]
        };
      } catch (error) {
        return {
          content: [{ 
            type: "text", 
            text: JSON.stringify({ error: "Failed to create calendar" }) 
          }],
          isError: true
        };
      }
    }
  );

• src/calendars.ts:111-122 (helper)

  Helper function that executes the core logic: POST request to the calendar API bridge to create a new calendar.

  export async function createCalendar(title: string, color?: string): Promise<any> {
    try {
      const response = await axios.post(`${API_BASE_URL}/calendars`, {
        title,
        color
      });
      return response.data;
    } catch (error) {
      console.error(`Failed to create calendar "${title}":`, error);
      throw new Error(`Failed to create calendar: ${error}`);
    }
  }