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```bash
══════════════════════════════════════════════════
VOLTAGENT SERVER STARTED SUCCESSFULLY
══════════════════════════════════════════════════
βœ“ HTTP Server: http://localhost:3141
VoltOps Platform: https://console.voltagent.dev
══════════════════════════════════════════════════
```
![VoltOps LLM Observability Platform](https://cdn.voltagent.dev/readme/demo.gif)
You can start chatting with your agent right away through the VoltOps Console!
## Multi-Agent Systems - Delegated Agents
The framework's sub-agent system allows complex tasks to be divided among specialized agents:
```typescript
// Research specialist agent
const researchAgent = new Agent({
name: "Researcher",
instructions: "Conducts detailed research using web search",
tools: [webSearchTool],
});
// Writing specialist agent
const writerAgent = new Agent({
name: "Writer",
instructions: "Creates engaging content based on research data",
tools: [contentGeneratorTool],
});
// Coordinator agent
const coordinator = new Agent({
name: "Coordinator",
instructions: "Coordinates research and writing tasks",
llm: new VercelAIProvider(),
model: openai("gpt-4o"),
subAgents: [researchAgent, writerAgent], // Automatic delegate_task tool
});
// Complex workflow in a single call
await coordinator.generateText("Write a blog post about quantum computing");
// Coordinator will delegate research to researcher, writing to writer
```
## Voice Features
VoltAgent's voice integration is also designed with a TypeScript-first approach:
```typescript
import { ElevenLabsVoiceProvider, OpenAIVoiceProvider } from "@voltagent/voice";
// Realistic voice with ElevenLabs
const elevenLabsVoice = new ElevenLabsVoiceProvider({
apiKey: process.env.ELEVENLABS_API_KEY,
voice: "Rachel",
ttsModel: "eleven_multilingual_v2",
});
const voiceAgent = new Agent({
name: "Voice Assistant",
instructions: "Assistant that helps with voice responses",
llm: new VercelAIProvider(),
model: openai("gpt-4o"),
voice: elevenLabsVoice,
});
// Generate text response
const response = await voiceAgent.generateText("Tell me a short story");
// Convert to voice
if (voiceAgent.voice && response.text) {
const audioStream = await voiceAgent.voice.speak(response.text);
// Save to file
import { createWriteStream } from "node:fs";
import { pipeline } from "node:stream/promises";
const fileStream = createWriteStream("story.mp3");
await pipeline(audioStream, fileStream);
console.log("Audio file ready!");
}
```
## Production-Ready Features
### Error Handling & Resilience
```typescript
import { createHooks } from "@voltagent/core";
const hooks = createHooks({
onStart: async ({ agent, context }) => {
const requestId = `req-${Date.now()}`;
context.context.set("requestId", requestId);
console.log(`[${agent.name}] Request started: ${requestId}`);
},