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Core

Core is an agent skill (a SKILL.md file) from vercel-labs/agent-browser. Core agent-browser usage guide. Read this before running any agent-browser commands. It works with Claude Code and Cursor and has 43,583 GitHub stars across a repository of 7 listed skills.

github.com/vercel-labs/agent-browser/skill-data/core (opens in a new tab)

  • Official
  • Multi-skill repo
  • Plugin marketplace
  • Data & analysis
  • Actively maintained
View on GitHub (opens in a new tab)

Add this skill

Claude

This repository is a Claude Code plugin marketplace. In Claude Code:

/plugin marketplace add vercel-labs/agent-browser
/plugin install agent-browser@agent-browser

In the Claude apps, zip the core folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/vercel-labs/agent-browser.git
cp -r agent-browser/skill-data/core .agents/skills/core   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/vercel-labs/agent-browser.git
cp -r agent-browser/skill-data/core .cursor/skills/core   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Core agent-browser usage guide. Read this before running any agent-browser commands. Covers the snapshot-and-ref workflow, navigating pages, interacting with elements (click, fill, type, select), extracting text and data, taking screenshots, managing tabs, handling forms and auth, waiting for content, running multiple browser sessions in parallel, and troubleshooting common failures.

When it triggers

  • Use when the user asks to interact with a website, fill a form, click something, extract data, take a screenshot, log into a site, test a web app, or automate any browser task.

More skills in vercel-labs/agent-browser

7 skills are listed from this repository.

Similar skills

More data & analysis skills

All Data & analysis

FAQ

Core FAQ

Still curious? Email info@appsgit.com.

What is the Core skill?

Core is an agent skill (a SKILL.md file) from vercel-labs/agent-browser. Core agent-browser usage guide. Read this before running any agent-browser commands. It works with Claude Code and Cursor and has 43,583 GitHub stars across a repository of 7 listed skills. Its SKILL.md lives at github.com/vercel-labs/agent-browser/skill-data/core.

How do I install the Core skill?

In Claude Code, run /plugin marketplace add vercel-labs/agent-browser and then /plugin install agent-browser@agent-browser. For Codex or Cursor, copy the core folder into .agents/skills/ or .cursor/skills/.

Is the Core skill free?

Yes. The repository is open source under the Apache-2.0 license.

Is Core maintained?

The repository's most recent commit was on Oct 6, 2026. Its latest release is v0.38.2. appsgit only lists skills from repositories with a commit in the last six months.