chrome-devtools

A set of browser automation and debugging tools using Puppeteer, a library that controls web browsers from code.

In plain words
What is it for?
Use it to fill in forms, take screenshots, collect data from websites, monitor network traffic, debug JavaScript, and measure performance.
Why use it?
It removes the need to perform repetitive browser checks by hand and helps investigate page behavior, network requests, JavaScript errors, and speed problems.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/einverne/dotfiles/chrome-devtools
Any agent
npx skills add einverne/dotfiles --skill chrome-devtools
Clone the repo
git clone --depth 1 https://github.com/einverne/dotfiles

Made for: Claude Code, Codex.

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,593 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00045 $0.01593
Opus 5 $0.00023 $0.00796
Sonnet 5 $0.00009 $0.00319
Haiku 4.5 $0.00005 $0.00159

Measured 2d ago against content hash 47c57eab364a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

chrome-devtools scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

The scan reads SKILL.md. This mod also ships 12 executable files (scripts/click.js, scripts/console.js, scripts/evaluate.js, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- Manual install: `sudo apt-get install -y libnss3 libnspr4 libasound2t64 libatk1.0-0 libatk-bridge2.0-0 libcups2 libdrm2 libxkbcommon0 libxcomposite1 libxdamage1 libxfixes3 libxrandr2 libgbm1`
claude/skills/chrome-devtools/SKILL.md · 223 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 223 lines · 45 tokens per session scan B 47c57eab364a

Subscribe to this mod's changes

chrome-devtools is a skill published in the GitHub repository einverne/dotfiles (121 stars, last pushed 4d ago), licensed GPL-3.0. It adds 45 tokens to every session and 1,593 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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