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SKILL verified MIT Self-run

Agent Browser

skill-s3yed-appie-kit-agent-browser · by S3YED

Browser automation CLI built for AI agents - compact ref-based text output (200-400 tokens vs 3000-5000 for full DOM), native Rust, 50+ commands. Default browser-automation tool for the fleet. Use for any web navigation, scraping, form-filling, screenshots, or testing from the shell.

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Install

$ agentstack add skill-s3yed-appie-kit-agent-browser

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

agent-browser - fleet default for browser automation

A native-Rust browser-automation CLI designed for AI agents. Compact text output minimises context usage. Use it instead of heavier browser stacks for shell-driven web tasks.

Install

npm install -g agent-browser      # all platforms
# or: brew install agent-browser  # macOS
agent-browser install             # download Chrome (first run only)
# try without installing:
npx agent-browser open example.com

Core loop (ref-based)

agent-browser open example.com
agent-browser snapshot -i          # accessibility tree with refs: heading "..." [ref=e1], link "..." [ref=e2]
agent-browser click @e2            # act on a ref from the snapshot
agent-browser screenshot page.png
agent-browser close

Why refs (the context win)

snapshot returns a compact accessibility tree where each element has a ref (@e1, @e2):

  • Context-efficient: ~200-400 tokens vs ~3000-5000 for full DOM.
  • Deterministic: a ref points to the exact element from the snapshot (no fragile selectors).
  • Fast: no DOM re-query. AI-friendly: text output parses naturally.

What it covers (50+ commands)

Navigation, forms, screenshots, network control, storage/cookies/auth-state, file upload/download, tabs, frames, debugging. Built-in: video recording, streaming, profiler, diffing. First-class docs for React/Web Vitals, init scripts, and Next.js + Vercel. Stateful: sessions, profiles, proxy, security controls - good for long-running agents.

Architecture

Client-daemon: a Rust CLI talks to a native Rust daemon that drives Chrome over CDP. The daemon starts automatically and persists between commands.

When to use vs other tools

  • Default for shell-driven browser work (cheapest context, deterministic).
  • Use Playwright/Stagehand only when you need their specific ecosystem features.
  • Cross-platform: macOS (arm64/x64), Linux (arm64/x64), Windows (x64).

Works with: Claude Code, Cursor, Copilot, Codex, Gemini, opencode, and any agent that runs shell commands.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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