@eko-ai/eko-nodejs NPM

Eko (pronounced like ‘echo’) is a production-ready JavaScript framework that enables developers to create reliable agents, from simple commands to complex workflows. It provides a unified interface for running agents in both computer and browser environments.

Framework Comparison

Feature	Eko	Langchain	Browser-use	Dify.ai	Coze
Supported Platform	All platform	Server side	Browser	Web	Web
One sentence to multi-step workflow	✅	❌	✅	❌	❌
Intervenability	✅	✅	❌	❌	❌
Development Efficiency	High	Low	Middle	Middle	Low
Task Complexity	High	High	Low	Middle	Middle	Middle
Open-source	✅	✅	✅	✅	❌
Access to private web resources	✅	❌	❌	❌	❌

Features

Pure JavaScript: Built for browsers and Node.js.🚀
Multi-Agent: Unleash power with multiple Agents in one task.📈
Agent/Tool Flexibility: Customize new Agents and Tools in just one line.🎉
Native MCP: Connects seamlessly with Awesome MCP Servers.🔗
Dynamic LLM: Balance speed and performance with flexible model choices.⚙️
Human-in-the-loop: Intervene when it matters most.🤝
Stream Planning: Dynamic rendering made easy.🎨
Loop & Listener Tasks: Automate any repetitive task.🤖
Observable Chain: Coming soon
Native A2A: Coming soon

Quickstart

Note: Please refer to the Eko Quickstart guide guide for full instructions on how to run it.
Security Warning
DO NOT use API Keys in browser/frontend code!
This will expose your credentials and may lead to unauthorized usage.
Best Practices: Configure backend API proxy request through baseURL and request headers.
Please refer to the link: https://eko.fellou.ai/docs/getting-started/configuration#web-environment

const llms: LLMs = {
  default: {
    provider: "anthropic",
    model: "claude-sonnet-4-20250514",
    apiKey: "your-api-key"
  },
  openai: {
    provider: "openai",
    model: "gpt-4.1",
    apiKey: "your-api-key"
  }
};

let agents: Agent[] = [new BrowserAgent(), new FileAgent()];
let eko = new Eko({ llms, agents });
let result = await eko.run("Search for the latest news about Musk, summarize and save to the desktop as Musk.md");