Voice Agent SDK

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Overview

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Key Features

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Architecture

1. Core Communication Layer: Handles real-time voice streaming and media processing
2. AI Processing Layer: Manages STT, TTS, and LLM integration
3. Configuration Layer: Simplified API for customizing agent behavior
4. Integration Layer: Connectors for CRMs, databases, and business systems

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Getting Started

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Installation

npm install @voxeme/voice-agent-sdk

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Basic Implementation

import { VoiceAgent } from '@voxeme/voice-agent-sdk';

const agent = new VoiceAgent({
  stt: {
    provider: 'deepgram', // or 'assemblyai', 'google', etc.
    config: {
      // STT configuration
    }
  },
  tts: {
    provider: 'elevenlabs', // or 'google', 'amazon', etc.
    config: {
      voice: 'default',
      // TTS configuration
    }
  },
  llm: {
    provider: 'openai', // or 'anthropic', 'cohere', etc.
    config: {
      model: 'gpt-4',
      // LLM configuration
    }
  }
});

// Start the agent
agent.start();

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Core Components

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Speech-to-Text (STT)

• Deepgram (recommended for accuracy)
• AssemblyAI (good balance of quality and cost)
• Google Cloud Speech-to-Text
• Amazon Transcribe
• Azure Speech Services

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Text-to-Speech (TTS)

• ElevenLabs (highest quality)
• Google Cloud Text-to-Speech
• Amazon Polly
• Azure Text-to-Speech
• Custom neural voices

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Language Model Integration

• OpenAI GPT models
• Anthropic Claude
• Cohere Command
• Custom fine-tuned models
• On-premises LLMs

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Configuration Options

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Agent Personality

const agent = new VoiceAgent({
  personality: {
    tone: 'friendly', // or 'professional', 'casual', 'enthusiastic'
    speakingStyle: 'conversational', // or 'formal', 'direct'
    responseLength: 'concise', // or 'detailed'
    language: 'en-US'
  }
});

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Conversation Flow

const agent = new VoiceAgent({
  conversation: {
    greeting: 'Hello! How can I assist you today?',
    timeout: 30, // seconds before timeout prompt
    maxTurns: 20, // maximum conversation turns
    interruptionHandling: true
  }
});

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Advanced Features

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Knowledge Base Integration

const agent = new VoiceAgent({
  knowledgeBase: {
    type: 'vector', // or 'graph', 'document'
    source: 'your-knowledge-base-id',
    retrievalMethod: 'similarity'
  }
});

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Tool Calling

const agent = new VoiceAgent({
  tools: [
    {
      name: 'check_order_status',
      description: 'Check the status of a customer order',
      parameters: {
        orderId: { type: 'string', required: true }
      },
      handler: async (params) => {
        // Your implementation
        return orderStatus;
      }
    }
  ]
});

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Use Cases

• Customer Service Bots: Automated customer support with natural conversations
• Sales Assistants: AI-powered sales agents for lead qualification
• Appointment Scheduling: Automated booking and rescheduling
• Information Kiosks: Voice-based information systems
• Educational Tutors: Interactive learning assistants

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Performance Metrics

• Latency tracking (STT, TTS, LLM)
• Accuracy metrics
• Conversation quality scores
• Resource utilization
• Error rates and recovery

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Security & Compliance

• End-to-end encryption for voice streams
• GDPR and CCPA compliance
• HIPAA-ready for healthcare applications
• SOC 2 Type II certified infrastructure
• Custom data retention policies

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Pricing

• Starter: Basic features with limited usage
• Professional: Full features with higher usage limits
• Enterprise: Custom configurations and dedicated support