chrome-devtools

A browser automation and debugging skill based on Puppeteer, a tool for controlling a web browser with code.

In plain words
What is it for?
Use it to test web interfaces, submit forms, capture screenshots, debug dashboards, inspect API documentation, and scrape visible page data.
Why use it?
It removes the need to perform repetitive browser checks manually and helps inspect pages, forms, screenshots, and network activity.

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/ihatesea69/kiro-kit/chrome-devtools
Any agent
npx skills add ihatesea69/kiro-kit --skill chrome-devtools
Clone the repo
git clone --depth 1 https://github.com/ihatesea69/kiro-kit

Made for: Claude Code, Codex.

Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 267 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00034 $0.00267
Opus 5 $0.00017 $0.00133
Sonnet 5 $0.00007 $0.00053
Haiku 4.5 $0.00003 $0.00027

Measured 2d ago against content hash d139cd596220, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

chrome-devtools scanned grade A with 0 findings 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 14 executable files (scripts/__tests__/selector.test.js, scripts/click.js, scripts/console.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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.kiro/skills/chrome-devtools/SKILL.md · 48 lines

What it actually says

Chrome DevTools

Activate this skill when automating browsers, testing web interfaces, or capturing screenshots.

When to Use

  • Testing API documentation UIs
  • Capturing screenshots of admin panels
  • Automating form submissions for testing
  • Debugging web-based monitoring dashboards
  • Scraping data from web interfaces

Puppeteer Usage

const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.goto('http://localhost:3000');
await page.screenshot({ path: 'screenshot.png' });
await browser.close();

Common Operations

  • Navigate to URLs and wait for network idle
  • Fill forms and click buttons
  • Take full-page or element screenshots
  • Extract text content from pages
  • Monitor network requests and responses
  • Execute JavaScript in page context

Rules

  • Always close browser instances after use
  • Set appropriate timeouts for page loads
  • Use headless mode for CI environments
  • Handle navigation errors gracefully
  • Respect rate limits when scraping
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 · 48 lines · 34 tokens per session scan A d139cd596220

Subscribe to this mod's changes

chrome-devtools is a skill published in the GitHub repository ihatesea69/kiro-kit (18 stars, last pushed 13d ago), licensed MIT. It adds 34 tokens to every session and 267 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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