update_event

Instructions

Implementation Reference

• src/index.ts:142-176 (registration)

  Full registration of the 'update_event' MCP tool, including name, description, input schema, and handler function.

  server.tool(
    'update_event',
    'Update an existing event. Only provide the fields you want to change.',
    {
      event_id: z.number().describe('The ID of the event to update'),
      title: z.string().optional().describe('New title for the event'),
      description: z.string().optional().describe('New description for the event'),
      start_time: z.string().optional().describe('New start time in ISO 8601 format'),
      end_time: z.string().optional().describe('New end time in ISO 8601 format'),
      location: z.string().optional().describe('New location for the event'),
      capacity: z.number().optional().describe('New capacity for the event')
    },
    async ({ event_id, title, description, start_time, end_time, location, capacity }) => {
      try {
        const apiClient = getClient();
        const updateData: Record<string, unknown> = {};
        if (title !== undefined) updateData.title = title;
        if (description !== undefined) updateData.description = description;
        if (start_time !== undefined) updateData.start_time = start_time;
        if (end_time !== undefined) updateData.end_time = end_time;
        if (location !== undefined) updateData.location = location;
        if (capacity !== undefined) updateData.capacity = capacity;
        
        const event = await apiClient.updateEvent(event_id, updateData);
        return {
          content: [{ type: 'text', text: `Event updated successfully!\n\n${formatEvent(event)}` }]
        };
      } catch (error) {
        return {
          content: [{ type: 'text', text: `Error: ${error instanceof Error ? error.message : String(error)}` }],
          isError: true
        };
      }
    }
  );

• src/index.ts:154-175 (handler)

  The handler function for the 'update_event' tool. It constructs a partial update object from provided parameters and calls the apiClient.updateEvent method, returning formatted success or error response.

  async ({ event_id, title, description, start_time, end_time, location, capacity }) => {
    try {
      const apiClient = getClient();
      const updateData: Record<string, unknown> = {};
      if (title !== undefined) updateData.title = title;
      if (description !== undefined) updateData.description = description;
      if (start_time !== undefined) updateData.start_time = start_time;
      if (end_time !== undefined) updateData.end_time = end_time;
      if (location !== undefined) updateData.location = location;
      if (capacity !== undefined) updateData.capacity = capacity;
      
      const event = await apiClient.updateEvent(event_id, updateData);
      return {
        content: [{ type: 'text', text: `Event updated successfully!\n\n${formatEvent(event)}` }]
      };
    } catch (error) {
      return {
        content: [{ type: 'text', text: `Error: ${error instanceof Error ? error.message : String(error)}` }],
        isError: true
      };
    }
  }

• src/index.ts:145-153 (schema)

  Zod input schema defining parameters for the 'update_event' tool.

  {
    event_id: z.number().describe('The ID of the event to update'),
    title: z.string().optional().describe('New title for the event'),
    description: z.string().optional().describe('New description for the event'),
    start_time: z.string().optional().describe('New start time in ISO 8601 format'),
    end_time: z.string().optional().describe('New end time in ISO 8601 format'),
    location: z.string().optional().describe('New location for the event'),
    capacity: z.number().optional().describe('New capacity for the event')
  },

• src/api-client.ts:139-146 (helper)

  API client helper method 'updateEvent' that performs the HTTP PUT request to update an event via the EventHorizon API.

  async updateEvent(eventId: number, eventData: Partial<EventCreateRequest>): Promise<Event> {
    try {
      const response: AxiosResponse<Event> = await this.client.put(`/api/events/${eventId}/`, eventData);
      return response.data;
    } catch (error) {
      throw new Error(`Failed to update event ${eventId}: ${getErrorMessage(error)}`);
    }
  }