# Chrome Devtools Cli

> Use when a task needs Chrome DevTools from the shell: automate a live Chrome browser with `chrome-devtools`, inspect accessibility snapshots and UIDs, click/fill/navigate pages, evaluate JavaScript, inspect console and network activity, take screenshots, run Lighthouse, capture performance traces, or connect to an existing debuggable Chrome. This is CLI mode, not MCP client setup.

- **Type:** Skill
- **Install:** `agentstack add skill-appautomaton-webmaton-chrome-devtools-cli`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [appautomaton](https://agentstack.voostack.com/s/appautomaton)
- **Installs:** 0
- **Category:** [Web & Browser](https://agentstack.voostack.com/c/web-and-browser)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [appautomaton](https://github.com/appautomaton)
- **Source:** https://github.com/appautomaton/webmaton/tree/main/skills/chrome-devtools-cli

## Install

```sh
agentstack add skill-appautomaton-webmaton-chrome-devtools-cli
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# chrome-devtools-cli

The package is `chrome-devtools-mcp`, but the action CLI is `chrome-devtools`. Use `chrome-devtools  ...` for this skill. Do not use `npx chrome-devtools-mcp@latest` unless you are configuring an MCP server outside this skill.

## Core Workflow

```bash
chrome-devtools new_page "https://example.com"
chrome-devtools take_snapshot
chrome-devtools click "1_3"
chrome-devtools fill "1_5" "search text"
chrome-devtools press_key "Enter"
```

`take_snapshot` returns accessibility-tree UIDs such as `1_3`. Always act on UIDs from the latest snapshot. Re-snapshot after navigation, reloads, or major DOM updates.

## Operating Rules

- Run tools directly; the background daemon starts implicitly on first real action and preserves browser state.
- Do not run `start`, `status`, or `stop` before every action. Use them only for setup, custom launch flags, or troubleshooting.
- Use `chrome-devtools  --help` for exact syntax. Output defaults to Markdown; add `--output-format=json` when structured output is useful.
- Prefer snapshots over screenshots for deciding what to click or fill. Use screenshots for visual proof, layout inspection, or reports.
- Use `evaluate_script`, console, and network commands when debugging runtime behavior; use Lighthouse and performance tracing for page-quality/performance work.

## Common Tasks

```bash
chrome-devtools list_pages
chrome-devtools navigate_page --url "https://example.com"
chrome-devtools navigate_page --type "reload" --ignoreCache=true
chrome-devtools evaluate_script "() => document.title"
chrome-devtools list_console_messages --types error
chrome-devtools list_network_requests --pageSize 50
chrome-devtools take_screenshot --filePath page.png
chrome-devtools lighthouse_audit --mode "navigation"
chrome-devtools performance_start_trace --reload=true --autoStop=false --filePath trace.json.gz
chrome-devtools performance_stop_trace
```

For a broader command map, read `references/cli-reference.md`.

## Setup

If this is the first time using the CLI or `chrome-devtools` is missing, read `references/installation.md`. Installation is a one-time prerequisite, not part of the regular workflow.

## References

- `references/cli-reference.md` — command groups, daemon behavior, output modes, and troubleshooting commands
- `references/installation.md` — global install and PATH troubleshooting

## Source & license

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

- **Author:** [appautomaton](https://github.com/appautomaton)
- **Source:** [appautomaton/webmaton](https://github.com/appautomaton/webmaton)
- **License:** MIT

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

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-appautomaton-webmaton-chrome-devtools-cli
- Seller: https://agentstack.voostack.com/s/appautomaton
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.