agent-browser

Install the agent-browser extension for eve:

npm install @agent-browser/eve

The extension installs agent-browser automatically on first use and runs it inside the agent's sandbox. It requires a sandbox backend with real process execution, such as Vercel Sandbox, Docker, or microsandbox.

Mount the extension under agent/extensions/:

import browser from "@agent-browser/eve";
export default browser({});

The filename supplies the browser namespace. The extension adds tools such as browser__navigate, browser__snapshot, browser__click, browser__fill, browser__find, and browser__screenshot. agent-browser keeps the underlying browser process and session state in the eve sandbox.

Restrict browser access to the sites the agent needs with the extension's domain allow-list:

import browser from "@agent-browser/eve";
export default browser({  allowedDomains: ["example.com", "*.example.com"],  contentBoundaries: true,  maxOutputChars: 50_000,});

Also configure the sandbox network policy for defense in depth. Treat saved browser state, cookies, screenshots, downloads, and recordings as sensitive data. Do not place passwords or session tokens in prompts. Use the extension's per-tool overrides to gate or disable actions your agent should not take unattended.

The extension also supports inline screenshots, session naming, proxies, and production pre-installation. See the agent-browser eve extension documentation for the complete options and example app.