WebP Batch Converter

import { Server } from '@modelcontextprotocol/sdk/server/index.js'; import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'; import { CallToolRequestSchema, ListToolsRequestSchema, } from '@modelcontextprotocol/sdk/types.js'; import { cpus } from 'os'; import { WebPConverter } from './lib/convert.js'; class WebPBatchServer { private server: Server; private converter: WebPConverter; constructor() { this.converter = new WebPConverter(); this.server = new Server( { name: 'webp-batch', version: '1.0.0', }, { capabilities: { tools: {}, }, } ); this.setupToolHandlers(); } private setupToolHandlers() { // List available tools this.server.setRequestHandler(ListToolsRequestSchema, async () => { return { tools: [ { name: 'convert_to_webp', description: 'Batch convert images (PNG, JPG, JPEG) to WebP format with customizable options. Recursively scans directories and provides detailed conversion reports.', inputSchema: { type: 'object', properties: { src: { type: 'string', description: 'Source directory to scan for images (default: current directory)', default: '.' }, quality: { type: 'number', description: 'WebP quality (0-100, default: 75)', minimum: 0, maximum: 100, default: 75 }, lossless: { type: 'boolean', description: 'Use lossless encoding (recommended for PNG images)', default: false }, overwrite: { type: 'boolean', description: 'Replace original files with WebP versions', default: false }, threads: { type: 'number', description: `Number of concurrent conversions (default: ${cpus().length})`, minimum: 1, default: cpus().length }, preserveMeta: { type: 'boolean', description: 'Preserve EXIF and ICC metadata', default: false }, flat: { type: 'string', description: 'Output all WebP files to specified directory (optional)' } }, required: [] } } ] }; }); // Handle tool execution this.server.setRequestHandler(CallToolRequestSchema, async (request) => { if (request.params.name !== 'convert_to_webp') { throw new Error(`Unknown tool: ${request.params.name}`); } const args = request.params.arguments as any; try { // Validate and set defaults const options = { src: args.src || '.', quality: args.quality || 75, lossless: args.lossless || false, overwrite: args.overwrite || false, threads: args.threads || cpus().length, preserveMeta: args.preserveMeta || false, flat: args.flat }; // Validate quality range if (options.quality < 0 || options.quality > 100) { throw new Error('Quality must be between 0-100'); } // Validate threads if (options.threads < 1) { throw new Error('Threads must be a positive number'); } const result = await this.converter.batchConvert(options); return { content: [ { type: 'text', text: `WebP Batch Conversion Complete!\n\n` + `📊 Results:\n` + `✅ Converted: ${result.converted.length} files\n` + `⏭️ Skipped: ${result.skipped.length} files\n` + `❌ Errors: ${result.errors.length} files\n` + `💾 Original size: ${Math.round(result.originalKB)} KB\n` + `🗜️ WebP size: ${Math.round(result.webpKB)} KB\n` + `💰 Space saved: ${result.savings}%\n\n` + `📋 Detailed Report:\n${JSON.stringify(result, null, 2)}` } ] }; } catch (error) { return { content: [ { type: 'text', text: `❌ Conversion failed: ${error instanceof Error ? error.message : String(error)}` } ], isError: true }; } }); } async run() { const transport = new StdioServerTransport(); await this.server.connect(transport); console.error('WebP Batch MCP server running on stdio'); // Keep the process alive to handle multiple requests await new Promise(() => { /* intentional noop */ }); } } const server = new WebPBatchServer(); server.run().catch(console.error);