EventHorizon MCP Server

Instructions

Implementation Reference

• src/index.ts:211-224 (handler)

  MCP tool handler for 'register_for_event': calls apiClient to register and formats response.
  async ({ event_id, answers }) => { try { const apiClient = getClient(); const registration = await apiClient.registerForEvent(event_id, answers || {}); return { content: [{ type: 'text', text: `Successfully registered!\n\n${formatRegistration(registration)}` }] }; } catch (error) { return { content: [{ type: 'text', text: `Error: ${error instanceof Error ? error.message : String(error)}` }], isError: true }; } }
• src/index.ts:204-225 (registration)

  Registration of the 'register_for_event' tool with MCP server, including name, description, schema, and handler.
  server.tool( 'register_for_event', 'Register the current user for an event.', { event_id: z.number().describe('The ID of the event to register for'), answers: z.record(z.unknown()).optional().describe('Answers to registration form questions (if any)') }, async ({ event_id, answers }) => { try { const apiClient = getClient(); const registration = await apiClient.registerForEvent(event_id, answers || {}); return { content: [{ type: 'text', text: `Successfully registered!\n\n${formatRegistration(registration)}` }] }; } catch (error) { return { content: [{ type: 'text', text: `Error: ${error instanceof Error ? error.message : String(error)}` }], isError: true }; } } );
• src/index.ts:207-210 (schema)

  Zod input schema for the tool parameters: event_id (required number) and answers (optional record).
  { event_id: z.number().describe('The ID of the event to register for'), answers: z.record(z.unknown()).optional().describe('Answers to registration form questions (if any)') },
• src/api-client.ts:156-163 (helper)

  Core API client method implementing the registration via HTTP POST to the backend API.
  async registerForEvent(eventId: number, answers: Record<string, unknown> = {}): Promise<Registration> { try { const response: AxiosResponse<Registration> = await this.client.post(`/api/events/${eventId}/register/`, { answers }); return response.data; } catch (error) { throw new Error(`Failed to register for event ${eventId}: ${getErrorMessage(error)}`); } }
• src/api-client.ts:43-51 (schema)

  TypeScript interface defining the Registration response structure.
  export interface Registration { id: number; event: Event | number; user: User | number; status: 'pending' | 'approved' | 'waitlisted' | 'cancelled'; answers: Record<string, unknown>; registered_at: string; updated_at: string; }