Agents-Js

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agents-js is an open-source Node.js framework for building realtime, multimodal AI agents. It enables developers to create conversational voice agents that can see, hear, and understand, running on servers.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is agents-js?

agents-js is a Node.js distribution of the LiveKit Agents framework, designed for building realtime, programmable participants that run on servers. It allows developers to create conversational, multi-modal voice agents capable of seeing, hearing, and understanding. The framework offers flexible integrations with various STT, LLM, TTS, and Realtime APIs, and supports extensive WebRTC clients through LiveKit's open-source SDK ecosystem. Key features include semantic turn detection using a transformer model to reduce interruptions, and the ability to exchange data seamlessly with clients via RPCs and other Data APIs. It is fully open-source, allowing for self-hosting of the entire stack, including the LiveKit server. The framework also provides a comprehensive ecosystem of plugins for processing streaming input and generating output, such as those for OpenAI, Google, Deepgram, and ElevenLabs.

Best used for

Ideal for developers who need to build interactive, real-time voice AI agents, integrate various STT, LLM, and TTS models, and manage complex conversational flows. Especially valuable for creating custom AI-powered communication applications that require multimodal capabilities and seamless data exchange.

Common actions

build AI agents

create voice assistants

integrate AI models

develop real-time applications

manage agent sessions

face swappingcollaboration"AI Agents"github copilotworkflowsdeepfakelow-code/no-codeopen-sourceautomated workflow

Capabilities

Key features

Realtime multimodal AI agents
Node.js framework
Flexible STT, LLM, TTS integrations
Extensive WebRTC clients
Semantic turn detection
Open-source, self-hostable
Multi-agent handoff

Target Audience

developerstartup founderproduct manager

Integrations

openaigoogledeepgramelevenlabscartesianeuphonicresemblerime+ 7 more

Pricing & Plans

Open Source

Free

FAQs

What kind of AI agents can I build with agents-js?

You can build realtime, multimodal AI agents that are conversational and can process voice, understand context, and generate responses. These agents are programmable participants designed to run on servers, enabling complex interactions and integrations.

Does agents-js require third-party API keys for basic functionality?

No, for basic examples, agents-js can run out of the box via the LiveKit Inference Gateway without requiring third-party API keys. However, for specific plugins like OpenAI or Google, you would need to set up their respective API keys.

How does agents-js handle user turns and interruptions in conversations?

agents-js utilizes semantic turn detection, which employs a transformer model to identify when a user has finished speaking. This feature helps to reduce interruptions and ensures a smoother, more natural conversational flow for the AI agent.

Can I self-host the entire stack for agents-js?

Yes, agents-js is fully open-source, allowing you to run the entire stack on your own servers. This includes the LiveKit server, which is a widely used WebRTC media server, providing complete control over your deployment.

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