Vercel Just Open-Sourced 'eve' — a Next.js-Style Framework for Building AI Agents

by Geth Author

At its Ship London conference on June 17, 2026, Vercel open-sourced eve, a TypeScript framework for building production AI agents. The pitch is direct: eve is to agents what Next.js was to React apps — a set of conventions that handles the boring infrastructure so developers can focus on what the agent actually does.

Agents as directories

The central idea in eve is that an agent is just a folder. Scaffold an agent/ directory and you get:

  • instructions.md — the system prompt
  • agent.ts — runtime configuration
  • tools/*.ts — one file per tool capability
  • skills/, channels/, connections/ — optional extension folders

This is a deliberate echo of Next.js's file-based routing. If you know how to add a page to a Next.js app, you already understand how to add a tool to an eve agent. The framework uses convention-over-configuration to eliminate the production-plumbing problem — the durable execution, sandboxing, approvals, and evaluations that most teams end up reinventing from scratch on a weekend that turns into three months.

What runs underneath

When an eve agent runs on Vercel, sessions persist as event logs on Vercel Workflow, meaning the agent survives cold starts and redeploys without losing context mid-task. Tools execute inside isolated Firecracker VMs (Vercel Sandbox), and an Agent Runs dashboard tracks token usage and per-turn details automatically — no manual instrumentation.

Model choice is handled through Vercel's AI Gateway. You pass a simple string like "openai/gpt-5.4-mini" or swap in any supported provider without touching the agent's core logic.

The honest tradeoff

The framework is genuinely open source (Apache-2.0), and Vercel says it's the same system they've been running internally for v0 and their own agent fleet — so it's battle-tested, not vaporware. But the durable runtime and sandboxing are Vercel-native. You can't self-host the execution layer or deploy elsewhere without giving those capabilities up. Alternatives like Mastra offer platform independence; eve trades that portability for zero setup time on Vercel.

For teams already on Vercel, the value proposition is clear: production-grade agent infrastructure in the time it takes to create a folder. Vercel has promised deeper integration announcements at Ship on June 30. Eve is available now on GitHub under the Apache-2.0 license.