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1. **Rebuild everything from scratch** - Full control, but slow and complex |
2. **Use no-code tools** - Easy starting point, but limited and rigid |
Fortunately, there is something better today. |
## VoltAgent: A Framework Built for Developers |
That's exactly why we built [VoltAgent](https://github.com/VoltAgent/voltagent/). After struggling with these challenges for months, we realized developers needed something different: a solution that is _flexible but not complex_. |
VoltAgent is our developer-focused AI agent toolkit. We designed it to provide the freedom of coding from scratch along with productivity by using pre-existing solutions. |
### Why Is It Different? |
**Modular Architecture:** |
- `@voltagent/core` - Core engine |
- `@voltagent/voice` - Voice capability |
- `@voltagent/vercel-ai` - Vercel AI support |
- Add whatever modules you require, leave out what you don't |
**Provider Independent:** |
OpenAI, Google, Anthropic, doesn't matter. If some other provider appears tomorrow, it's _super easy_ to switch. |
**Developer Experience:** |
Made for developers. IntelliSense, TypeScript support, easily readable documentation. |
### Practical Example |
:::note Simple Agent Example |
We can create a simple agent and implement a robust AI assistant in three lines of code: |
::: |
```tsx |
import { VoltAgent, Agent } from "@voltagent/core"; |
import { VercelAIProvider } from "@voltagent/vercel-ai"; |
import { openai } from "@ai-sdk/openai"; |
const agent = new Agent({ |
name: "My Helper", |
instructions: "A friendly assistant. Gives clear and genuine answers to questions.", |
llm: new VercelAIProvider(), |
model: openai("gpt-4o"), |
}); |
// Usage |
const response = await agent.generateText("How's the weather today?"); |
``` |
### Tool System |
Our tool system is designed to be intuitive and powerful. Here's how it works: |
```tsx |
import { createTool } from "@voltagent/core"; |
import { z } from "zod"; |
const weatherTool = createTool({ |
name: "get_weather", |
description: "Get weather information for a specified city", |
parameters: z.object({ |
city: z.string().describe("City name, e.g., New York"), |
}), |
execute: async ({ city }) => { |
// Real API call would go here |
return { temperature: "72°F", condition: "Sunny" }; |
}, |
}); |
const agent = new Agent({ |
// ... other config |
tools: [weatherTool], |
}); |
``` |
Now the agent can respond with weather queries based on actual data! |
<ZoomableMermaid |
chart={` |
%%{init: {'theme':'base', 'themeVariables': {'primaryColor': '#10b981', 'primaryTextColor': '#10b981', 'primaryBorderColor': '#10b981', 'lineColor': '#10b981', 'secondaryColor': '#ecfdf5', 'tertiaryColor': '#d1fae5', 'background': '#ffffff', 'mainBkg': '#ecfdf5', 'secondBkg': '#d1fae5', 'tertiaryBkg': '#a7f3d0'}}}%% |
sequenceDiagram |
participant U as User |
participant A as VoltAgent |
participant T as WeatherTool |
participant API as WeatherAPI |
U->>A: How's the weather in Chicago? |
A->>A: Analyze tools |
Note over A: get_weather tool is suitable |
A->>T: execute city Chicago |
T->>API: HTTP GET weather |
API-->>T: Weather data response |
T-->>A: 65°F Cloudy |
A->>A: Generate response with LLM |
A->>U: Today in Chicago it's 65°F and cloudy |
`} |
/> |
This flow demonstrates how our tool system orchestrates different components. We designed it to be simple and self-explanatory. |
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