ever-browser

Ever — control your browser from any AI agent

Ever lets your AI coding agent drive a real Chrome browser — navigate, read the page, click, type, extract data, screenshot, and run autonomous web tasks. It works with Claude Code, Codex, Cursor, Gemini CLI, and ~30 other agents.

This repo is the install hub: a plugin (skill + MCP server) for Claude Code & Codex, a skill for every other agent, and the @everbrowser/cli package that powers them all.

---

Prerequisites (required for everyone)

Ever automates your Chrome, so two one-time steps are needed no matter how you install:

1. Install the Chrome extension → Ever on the Chrome Web Store → Add to Chrome 2. Sign in → click the Ever icon in the toolbar → the side panel opens → sign in with Google

> If a command later says the browser is "not connected," it almost always means the extension isn't installed or you're not signed in — do the two steps above and retry.

---

Install

⭐ Claude Code & Codex — install the plugin (recommended)

One step wires up both the skill and the native browser_* tools (via MCP):

Claude Code

/plugin marketplace add namuh-eng/everbrowser
/plugin install ever-browser@everbrowser

Codex

codex plugin marketplace add namuh-eng/everbrowser

Then enable ever-browser in the Codex plugin directory and restart.

Any other agent (Cursor, Gemini CLI, Copilot, Amp, …) — install the skill

npx skills add namuh-eng/everbrowser

Installs to the universal .agents/skills/ directory (covers Cursor, Codex, Gemini CLI, GitHub Copilot, Amp, Cline, OpenCode, Warp, and 30+ more), with Claude Code, Augment, and Continue available during setup.

Just want the CLI or a raw MCP server?

npm install -g @everbrowser/cli   # gives you `ever` and `ever mcp`
ever --version

Point any MCP client at ever mcp (stdio). Full command reference: @everbrowser/cli on npm.

---

Verify it works

ever start --url https://example.com
ever snapshot
ever stop

If all three succeed, you're set. (If start reports "not connected," revisit the two prerequisite steps.)

---

How it works

your AI agent ──▶ Ever (CLI commands  or  MCP browser_* tools)
                       └──▶ everd (local daemon) ──▶ Chrome extension (CDP) ──▶ your browser

• Skill = teaches the agent to run ever CLI commands in the terminal.
• MCP = gives the agent *native browser_ tools** it calls directly (ever mcp).
• Plugin = ships both in one install — best for Claude Code & Codex.

All paths drive the same daemon → extension → browser, and all need the prerequisites above.

---

Core workflow

1. ever start --url <url> — open a session 2. ever snapshot — capture the DOM with [id] annotations on interactive elements 3. ever click <id> / ever input <id> "text" — act on elements by id 4. Re-snapshot after the page changes — old ids become stale 5. ever stop — end the session

For scripted automation and scraping, use ever exec (injects page + browser JS globals):

ever exec "await page.goto('https://example.com'); await browser.snapshot()"
ever exec --file ./scrape.js

Run ever --help for the full command set, or see the npm README.

---

Available skills

| Skill | Description | |-------|-------------| | ever-browser | Browser control commands, the exec scripting API, video recording, and scraping recipes |

---

Contributing a skill or recipe

A skill is just a folder with a SKILL.md and optional recipe scripts.

1. Get it working interactively first with ever commands and ever exec. 2. Save reusable scripts under skills/<name>/recipes/ (see the x-feed-scraper recipe). 3. Write SKILL.md with frontmatter (name, description) and clear sections: Quick Start, Core Workflow, Recipes, Error Recovery. 4. Open a PR to namuh-eng/everbrowser, or share from your own repo via npx skills add <you>/<repo>.

---

If Ever is useful, a ⭐ on the repo helps others find it.