How to Create an AI Agent Using Vercel EVE SDK: Step-by-Step Guide

Building intelligent AI agents has never been easier. Vercel’s EVE framework, powered by the Vercel AI SDK, lets developers create production-ready agents using a simple directory-based structure. Think of it as “Next.js for agents”—define instructions in Markdown, tools in TypeScript, and deploy seamlessly.

Why Use Vercel EVE?

• Simple & Intuitive: An agent is just a folder with instructions.md, tools, skills, and sub-agents.
• Durable Workflows: Built-in support for multi-step reasoning, tool calling, and long-running tasks.
• Flexible Models: Connect to any LLM via OpenRouter, OpenAI, Gemini, and more.
• Full-Stack Ready: Pair with Next.js/React for beautiful frontends.
• Free to Start: Great for prototyping nutrition apps, data fetchers, automations, and more.

Quick Build Example: Nutrition Data Agent

In a recent tutorial, a developer created a food nutrition agent using:

1. EVE Framework — Initialize with npx eve@latest init.
2. Custom Instructions — Define the agent’s role (e.g., “Fetch accurate calorie and nutrition data”).
3. Tools & Data — Integrate FoodData Central (FDC) API with your API key.
4. Model Selection — Use powerful free options like Owl Alpha or NeX AGI via OpenRouter.
5. Frontend — Auto-generated UI (running on localhost:3000) with sample queries.

The agent successfully answered queries like “How many calories in 250g of chicken?” by pulling real-time data, showing protein, carbs, fats, and more.

Getting Started

• Set up your project and add API keys (.env file recommended).
• Craft detailed instructions.md with goals, rules, and data references.
• Define TypeScript tools for external APIs.
• Run locally or deploy on Vercel for production.

EVE handles the heavy lifting—durable execution, channels, and sandboxing—so you focus on logic and personality.

Whether you’re building personal assistants, data analysts, or automated workflows, Vercel EVE + AI SDK makes agent development fast and scalable. Perfect for developers moving from simple chatbots to true AI agents.