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{ tool } from '@strands-agents/sdk'\nimport { z } from 'zod'\n\n/** speak — browser-native TTS via SpeechSynthesis */\nexport const speakTool = tool({\n name: 'speak',\n description: 'Speak text aloud using browser TTS (SpeechSynthesis API).',\n inputSchema: z.object({\n text: z.string(),\n rate: z.number().optional().describe('Speech rate (0.1-10, default 1)'),\n pitch: z.number().optional().describe('Speech pitch (0-2, default 1)'),\n voice: z.string().optional().describe('Voice name or lang (e.g. en-US)'),\n }),\n callback: (input) => {\n try {\n if (!('speechSynthesis' in window)) return JSON.stringify({ status: 'error', error: 'SpeechSynthesis not supported' })\n speechSynthesis.cancel()\n const u = new SpeechSynthesisUtterance(input.text)\n if (input.rate) u.rate = input.rate\n if (input.pitch) u.pitch = input.pitch\n if (input.voice) {\n const voices = speechSynthesis.getVoices()\n const match = voices.find(v => v.name === input.voice || v.lang === input.voice)\n if (match) u.voice = match\n }\n speechSynthesis.speak(u)\n return JSON.stringify({ status: 'speaking', textLength: input.text.length })\n } catch (err: unknown) { return JSON.stringify({ status: 'error', error: (err as Error).message }) }\n },\n})\n\nexport const stopSpeakingTool = tool({\n name: 'stop_speaking',\n description: 'Stop all TTS playback',\n inputSchema: z.object({}),\n callback: () => {\n try { speechSynthesis.cancel(); return JSON.stringify({ status: 'stopped' }) }\n catch (err: unknown) { return JSON.stringify({ status: 'error', error: (err as Error).message }) }\n },\n})\n\nexport const listVoicesTool = tool({\n name: 'list_voices',\n description: 'List available TTS voices',\n inputSchema: z.object({}),\n callback: () => {\n try {\n const voices = speechSynthesis.getVoices().map(v => ({\n name: v.name, lang: v.lang, default: v.default, localService: v.localService,\n }))\n return JSON.stringify({ status: 'success', count: voices.length, voices })\n } catch (err: unknown) { return JSON.stringify({ status: 'error', error: (err as Error).message }) }\n },\n})\n\n/** listen — start browser SpeechRecognition (Chrome/Edge) */\nexport const listenTool = tool({\n name: 'listen',\n description: 'Listen to user speech via SpeechRecognition. Returns transcript. Chrome/Edge only.',\n inputSchema: z.object({\n lang: z.string().optional(),\n timeout: z.number().optional().describe('Max listen time in ms (default 10000)'),\n }),\n callback: async (input) => {\n try {\n const SR = (window as any).SpeechRecognition || (window as any).webkitSpeechRecognition\n if (!SR) return JSON.stringify({ status: 'error', error: 'SpeechRecognition not supported (Chrome/Edge only)' })\n return await new Promise((resolve) => {\n const rec = new SR()\n rec.lang = input.lang || 'en-US'\n rec.continuous = false\n rec.interimResults = false\n let done = false\n const finish = (payload: any) => { if (!done) { done = true; resolve(JSON.stringify(payload)) } }\n rec.onresult = (e: any) => {\n const transcript = e.results[0][0].transcript\n const confidence = e.results[0][0].confidence\n finish({ status: 'success', transcript, confidence })\n }\n rec.onerror = (e: any) => finish({ status: 'error', error: e.error })\n rec.onend = () => finish({ status: 'ended', note: 'No speech detected' })\n rec.start()\n setTimeout(() => { try { rec.stop() } catch {} }, input.timeout || 10000)\n })\n } catch (err: unknown) { return JSON.stringify({ status: 'error', error: (err as Error).message }) }\n },\n})\n\nexport const AUDIO_TOOLS = [speakTool, stopSpeakingTool, listVoicesTool, listenTool]\n"]}