Spotify Streamable MCP Server

import type { CallToolResult } from '@modelcontextprotocol/sdk/types.js'; import { z } from 'zod'; import type { HealthOutput as HealthOutputType } from '../schemas/outputs.js'; import type { RequestContext } from '../types/context.js'; import { logger } from '../utils/logger.js'; const startTime = Date.now(); export const healthInputSchema = z.object({}).strict(); export const healthTool = { name: 'health', title: 'Health Check Tool', description: 'Check the health status of the MCP server', inputSchema: healthInputSchema.shape, handler: async (args: unknown, context?: RequestContext): Promise<CallToolResult> => { // Validate input (even if empty, reject unknown keys) const parsed = healthInputSchema.safeParse(args); if (!parsed.success) { void logger.warning('health', { message: 'Invalid input parameters', errors: parsed.error.errors, requestId: context?.requestId, }); return { isError: true, content: [ { type: 'text', text: 'Health check expects no parameters. Unknown parameters were provided.', }, ], }; } try { void logger.debug('health', { message: 'Health check requested', requestId: context?.requestId, }); const uptime = Date.now() - startTime; const result: HealthOutputType = { status: 'ok', timestamp: Date.now(), uptime, }; void logger.info('health', { message: 'Health check completed', uptime, requestId: context?.requestId, }); return { content: [{ type: 'text', text: JSON.stringify(result, null, 2) }], structuredContent: result, }; } catch (error) { void logger.error('health', { message: 'Health check failed', error: (error as Error).message, requestId: context?.requestId, }); return { isError: true, content: [ { type: 'text', text: `Health check failed: ${(error as Error).message}` }, ], }; } }, };