https://github.com/voltagent/voltagent
Open Source TypeScript AI Agent Framework
https://github.com/voltagent/voltagent
agents ai autogen chatbots framework javascript llm llm-observability mcp nodejs observability tts typescript
Last synced: 1 day ago
JSON representation
Open Source TypeScript AI Agent Framework
- Host: GitHub
- URL: https://github.com/voltagent/voltagent
- Owner: VoltAgent
- License: mit
- Created: 2025-04-16T15:41:18.000Z (7 months ago)
- Default Branch: main
- Last Pushed: 2025-05-12T06:59:45.000Z (7 months ago)
- Last Synced: 2025-05-12T07:43:56.238Z (7 months ago)
- Topics: agents, ai, autogen, chatbots, framework, javascript, llm, llm-observability, mcp, nodejs, observability, tts, typescript
- Language: TypeScript
- Homepage: https://voltagent.dev
- Size: 2.89 MB
- Stars: 1,196
- Watchers: 11
- Forks: 120
- Open Issues: 22
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- Code of conduct: CODE_OF_CONDUCT.md
- Security: SECURITY.md
Awesome Lists containing this project
- awesome-readme - voltagent/voltagent - Clean project logo. Useful badges and links (website, docs, demo). Screenshot. Clear code examples amongst the feature list. Quickstart example. (Examples)
- fucking-awesome-ai-tools - VoltAgent - A TypeScript framework for building and running AI agents with tools, memory, and visibility. (Text / Developer tools)
- awesome-AI-driven-development - VoltAgent - An open source TypeScript framework for building and orchestrating AI agents (Multi-Agent & Orchestration / Other IDEs)
- awesome-ai-tools - VoltAgent - A TypeScript framework for building and running AI agents with tools, memory, and visibility. (Text / Developer tools)
- awesome-ChatGPT-repositories - voltagent - Open Source TypeScript AI Agent Framework with built-in LLM Observability (NLP)
- awesome-typescript - VoltAgent - A TypeScript framework for building and running AI agents with tools, memory, and visibility. (Built with TypeScript / AI)
- fucking-awesome-readme - voltagent/voltagent - Clean project logo. Useful badges and links (website, docs, demo). Screenshot. Clear code examples amongst the feature list. Quickstart example. (Examples)
README
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[](https://github.com/voltagent/voltagent/issues)
[](https://github.com/voltagent/voltagent/pulls)
[](https://opensource.org/licenses/MIT)
[](CODE_OF_CONDUCT.md)
[](https://www.npmjs.com/package/@voltagent/core)
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⭐ Like what we're doing? Give us a star ⬆️
**VoltAgent** is an open source TypeScript framework for building and orchestrating AI agents.
You can build production-ready agents with memory, workflows, tools, and built-in LLM observability.
## Why VoltAgent?
- **Production-Ready from Day One**: Ship agents with built-in memory, workflows, and observability instead of building infrastructure from scratch.
- **Code with Confidence**: Full TypeScript support with type-safe tools, automatic inference, and compile time safety across your entire agent system.
- **Debug Like a Pro**: Built-in VoltOps observability lets you trace every decision, monitor performance, and optimize workflows in real-time without external tools.
- **Build Complex Systems Simply**: Orchestrate multi-agent teams with supervisor coordination, declarative workflows, and modular architecture that scales from prototypes to production.
## Agent Development Platform
VoltAgent provides a complete platform for developing and monitoring AI agents through two complementary tools.
### Core Framework
With the core framework, you can build intelligent agents with memory, tools, and multi-step workflows while connecting to any AI provider. Create sophisticated multi-agent systems where specialized agents work together under supervisor coordination.
- **[Core Runtime](https://voltagent.dev/docs/agents/overview/) (`@voltagent/core`)**: Define agents with typed roles, tools, memory, and model providers in one place so everything stays organized.
- **[Workflow Engine](https://voltagent.dev/docs/workflows/overview/)**: Describe multi-step automations declaratively rather than stitching together custom control flow.
- **[Supervisors & Sub-Agents](https://voltagent.dev/docs/agents/sub-agents/)**: Run teams of specialized agents under a supervisor runtime that routes tasks and keeps them in sync.
- **[Tool Registry](https://voltagent.dev/docs/agents/tools/) & [MCP](https://voltagent.dev/docs/agents/mcp/)**: Ship Zod-typed tools with lifecycle hooks and cancellation, and connect to [Model Context Protocol](https://modelcontextprotocol.io/) servers without extra glue code.
- **[LLM Compatibility](https://voltagent.dev/docs/getting-started/providers-models/)**: Swap between OpenAI, Anthropic, Google, or other providers by changing config, not rewriting agent logic.
- **[Memory](https://voltagent.dev/docs/agents/memory/overview/)**: Attach durable memory adapters so agents remember important context across runs.
- **[Retrieval & RAG](https://voltagent.dev/docs/rag/overview/)**: Plug in retriever agents to pull facts from your data sources and ground responses (RAG) before the model answers.
- **[Evals](https://voltagent.dev/docs/evals/overview/)**: Ship guardrails faster by running agent eval suites alongside your workflows.
### VoltOps LLM Observability Platform
VoltAgent comes with built-in [VoltOps](#built-in-llm-observability-with-voltops) LLM observability to monitor and debug your agents in real-time with detailed execution traces, performance metrics, and visual dashboards. Inspect every decision your agents make, track tool usage, and optimize your workflows with built-in OpenTelemetry-based observability.
#### MCP Server (@voltagent/mcp-docs-server)
You can use the MCP server `@voltagent/mcp-docs-server` to teach your LLM how to use VoltAgent for AI-powered coding assistants like Claude, Cursor, or Windsurf. This allows AI assistants to access VoltAgent documentation, examples, and changelogs directly while you code.
📖 [How to setup MCP docs server](https://voltagent.dev/docs/getting-started/mcp-docs-server/)
## ⚡ Quick Start
Create a new VoltAgent project in seconds using the `create-voltagent-app` CLI tool:
```bash
npm create voltagent-app@latest
```
This command guides you through setup.
You'll see the starter code in `src/index.ts`, which now registers both an agent and a comprehensive workflow example found in `src/workflows/index.ts`.
```typescript
import { VoltAgent, Agent, Memory } from "@voltagent/core";
import { LibSQLMemoryAdapter } from "@voltagent/libsql";
import { createPinoLogger } from "@voltagent/logger";
import { honoServer } from "@voltagent/server-hono";
import { openai } from "@ai-sdk/openai";
import { expenseApprovalWorkflow } from "./workflows";
import { weatherTool } from "./tools";
// Create a logger instance
const logger = createPinoLogger({
name: "my-agent-app",
level: "info",
});
// Optional persistent memory (remove to use default in-memory)
const memory = new Memory({
storage: new LibSQLMemoryAdapter({ url: "file:./.voltagent/memory.db" }),
});
// A simple, general-purpose agent for the project.
const agent = new Agent({
name: "my-agent",
instructions: "A helpful assistant that can check weather and help with various tasks",
model: openai("gpt-4o-mini"),
tools: [weatherTool],
memory,
});
// Initialize VoltAgent with your agent(s) and workflow(s)
new VoltAgent({
agents: {
agent,
},
workflows: {
expenseApprovalWorkflow,
},
server: honoServer(),
logger,
});
```
Afterwards, navigate to your project and run:
```bash
npm run dev
```
When you run the dev command, tsx will compile and run your code. You should see the VoltAgent server startup message in your terminal:
```
══════════════════════════════════════════════════
VOLTAGENT SERVER STARTED SUCCESSFULLY
══════════════════════════════════════════════════
✓ HTTP Server: http://localhost:3141
Test your agents with VoltOps Console: https://console.voltagent.dev
══════════════════════════════════════════════════
```
Your agent is now running! To interact with it:
1. Open the Console: Click the [VoltOps LLM Observability Platform](https://console.voltagent.dev) link in your terminal output (or copy-paste it into your browser).
2. Find Your Agent: On the VoltOps LLM Observability Platform page, you should see your agent listed (e.g., "my-agent").
3. Open Agent Details: Click on your agent's name.
4. Start Chatting: On the agent detail page, click the chat icon in the bottom right corner to open the chat window.
5. Send a Message: Type a message like "Hello" and press Enter.
### Running Your First Workflow
Your new project also includes a powerful workflow engine.
The expense approval workflow demonstrates human-in-the-loop automation with suspend/resume capabilities:
```typescript
import { createWorkflowChain } from "@voltagent/core";
import { z } from "zod";
export const expenseApprovalWorkflow = createWorkflowChain({
id: "expense-approval",
name: "Expense Approval Workflow",
purpose: "Process expense reports with manager approval for high amounts",
input: z.object({
employeeId: z.string(),
amount: z.number(),
category: z.string(),
description: z.string(),
}),
result: z.object({
status: z.enum(["approved", "rejected"]),
approvedBy: z.string(),
finalAmount: z.number(),
}),
})
// Step 1: Validate expense and check if approval needed
.andThen({
id: "check-approval-needed",
resumeSchema: z.object({
approved: z.boolean(),
managerId: z.string(),
comments: z.string().optional(),
adjustedAmount: z.number().optional(),
}),
execute: async ({ data, suspend, resumeData }) => {
// If we're resuming with manager's decision
if (resumeData) {
return {
...data,
approved: resumeData.approved,
approvedBy: resumeData.managerId,
finalAmount: resumeData.adjustedAmount || data.amount,
};
}
// Check if manager approval is needed (expenses over $500)
if (data.amount > 500) {
await suspend("Manager approval required", {
employeeId: data.employeeId,
requestedAmount: data.amount,
});
}
// Auto-approve small expenses
return {
...data,
approved: true,
approvedBy: "system",
finalAmount: data.amount,
};
},
})
// Step 2: Process the final decision
.andThen({
id: "process-decision",
execute: async ({ data }) => {
return {
status: data.approved ? "approved" : "rejected",
approvedBy: data.approvedBy,
finalAmount: data.finalAmount,
};
},
});
```
You can test the pre-built `expenseApprovalWorkflow` directly from the VoltOps console:
1. **Go to the Workflows Page:** After starting your server, go directly to the [Workflows page](https://console.voltagent.dev/workflows).
2. **Select Your Project:** Use the project selector to choose your project (e.g., "my-agent-app").
3. **Find and Run:** You will see **"Expense Approval Workflow"** listed. Click it, then click the **"Run"** button.
4. **Provide Input:** The workflow expects a JSON object with expense details. Try a small expense for automatic approval:
```json
{
"employeeId": "EMP-123",
"amount": 250,
"category": "office-supplies",
"description": "New laptop mouse and keyboard"
}
```
5. **View the Results:** After execution, you can inspect the detailed logs for each step and see the final output directly in the console.
## Built-in LLM Observability with VoltOps
VoltAgent comes with VoltOps, a LLM observability platform built-in to help you monitor, debug, and optimize your agents in real-time.
🎬 [Try Live Demo](https://console.voltagent.dev/demo)
📖 [VoltOps Documentation](https://voltagent.dev/voltops-llm-observability-docs/)
🚀 [VoltOps Platform](https://voltagent.dev/voltops-llm-observability/)
### Observability & Tracing
Deep dive into agent execution flow with detailed traces and performance metrics.
### Dashboard
Get a comprehensive overview of all your agents, workflows, and system performance metrics.
### Logs
Track detailed execution logs for every agent interaction and workflow step.
### Memory Management
Inspect and manage agent memory, context, and conversation history.
### Traces
Analyze complete execution traces to understand agent behavior and optimize performance.
### Prompt Builder
Design, test, and refine prompts directly in the console.
## Examples
Explore real-world implementations of VoltAgent with complete source code and video tutorials.
For more examples and use cases, visit our [examples repository](https://github.com/VoltAgent/voltagent/tree/main/examples).
### WhatsApp Order Agent
Build a WhatsApp chatbot that handles food orders through natural conversation, manages menu items from a database, and processes orders with full conversation context.
- 📖 [Tutorial](https://voltagent.dev/examples/agents/whatsapp-ai-agent)
- 💻 [Source Code](https://github.com/VoltAgent/voltagent/tree/main/examples/with-whatsapp)
### YouTube to Blog Agent
Convert YouTube videos into Markdown blog posts using a supervisor agent that coordinates subagents with MCP tools, shared working memory, and VoltOps observability.
- 📖 [Tutorial](https://voltagent.dev/examples/agents/youtube-blog-agent)
- 💻 [Source Code](https://github.com/VoltAgent/voltagent/tree/main/examples/with-youtube-to-blog)
### AI Ads Generator Agent
Implement an Instagram ad generator that uses BrowserBase Stagehand to analyze landing pages, extract brand data, and generate visuals through Google Gemini AI.
- 📖 [Tutorial](https://voltagent.dev/examples/agents/ai-instagram-ad-agent)
- 💻 [Source Code](https://github.com/VoltAgent/voltagent/tree/main/examples/with-ad-creator)
### AI Recipe Generator Agent
Build an intelligent recipe recommendation system that creates personalized cooking suggestions based on available ingredients, dietary preferences, and time constraints.
- 📖 [Tutorial](https://voltagent.dev/examples/agents/recipe-generator)
- 📹 [Watch Video](https://youtu.be/KjV1c6AhlfY)
- 💻 [Source Code](https://github.com/VoltAgent/voltagent/tree/main/examples/with-recipe-generator)
### AI Research Assistant Agent
Create a multi-agent research workflow where different AI agents collaborate to research topics and generate comprehensive reports with type-safe data flow.
- 📖 [Tutorial](https://voltagent.dev/examples/agents/research-assistant)
- 📹 [Watch Video](https://youtu.be/j6KAUaoZMy4)
- 💻 [Source Code](https://github.com/VoltAgent/voltagent/tree/main/examples/with-research-assistant)
## Use Cases
Build AI agents for real-world business needs across different industries:
- **[HR Agent](https://voltagent.dev/use-cases/hr-agent/)** - Automate recruiting, employee onboarding, and HR support tasks.
- **[Customer Support Agent](https://voltagent.dev/use-cases/customer-support-agent/)** - Build support agents that handle customer questions and issues.
- **[Sales Teams](https://voltagent.dev/use-cases/sales-teams/)** - Qualify leads, gather customer data, and personalize sales outreach.
- **[Finance Agent](https://voltagent.dev/use-cases/finance-agent/)** - Manage invoices, track expenses, and generate financial reports.
- **[Development Agent](https://voltagent.dev/use-cases/development-agent/)** - Review code, manage deployments, and help development teams.
- **[Marketing Agent](https://voltagent.dev/use-cases/marketing-agent/)** - Plan campaigns, create content, and analyze marketing performance.
- **[Legal Agent](https://voltagent.dev/use-cases/legal-agent/)** - Review contracts, check compliance, and handle legal tasks.
- **[Insurance Agent](https://voltagent.dev/use-cases/insurance-agent/)** - Process claims, evaluate risks, and manage policies.
- **[Industrial Agent](https://voltagent.dev/use-cases/industrial-agent/)** - Monitor equipment, predict maintenance needs, and ensure safety.
- **[Education Agent](https://voltagent.dev/use-cases/education-agent/)** - Provide personalized tutoring, track student progress, and support learning.
- **[Government Agent](https://voltagent.dev/use-cases/government-agent/)** - Handle permit applications, process benefits, and serve citizens.
- **[Documentation Agent](https://voltagent.dev/use-cases/documentation-agent/)** - Create API docs, write changelogs, and generate tutorials from code.
## Learning VoltAgent
- 📖 **[Start with interactive tutorial](https://voltagent.dev/tutorial/introduction/)** to learn the fundamentals building AI Agents.
- **[Documentation](https://voltagent.dev/docs/)**: Dive into guides, concepts, and tutorials.
- **[Examples](https://github.com/voltagent/voltagent/tree/main/examples)**: Explore practical implementations.
- **[Blog](https://voltagent.dev/blog/)**: Read more about technical insights, and best practices.
## Contribution
We welcome contributions! Please refer to the contribution guidelines (link needed if available). Join our [Discord](https://s.voltagent.dev/discord) server for questions and discussions.
## Contributor ♥️ Thanks
Big thanks to everyone who's been part of the VoltAgent journey, whether you've built a plugin, opened an issue, dropped a pull request, or just helped someone out on Discord or GitHub Discussions.
VoltAgent is a community effort, and it keeps getting better because of people like you.
Your stars help us reach more developers! If you find VoltAgent useful, please consider giving us a star on GitHub to support the project and help others discover it.
## License
Licensed under the MIT License, Copyright © 2025-present VoltAgent.