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Browser Testing With Devtools

Checked
addyosmani·vlatest·testing·MIT

Automates browser testing tasks using Chrome DevTools, enabling debugging, performance analysis, and automated assertions.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add addyosmani/agent-skills --skill browser-testing-with-devtools -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

addyosmani

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned addyosmani/agent-skills at 2686b620fc.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
2686b620fc
Manifest
skills/browser-testing-with-devtools/SKILL.md
Scanned
1 file, 300 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill allows an AI agent to interact with and utilize browser developer tools (DevTools) for automated testing. It can inspect elements, evaluate JavaScript in the console, and simulate user interactions like clicks and form submissions within a web page. The agent can then analyze results and report on issues or verify expected behavior.

When to use it

  • Automated UI Testing: Verify that buttons are clickable, links navigate correctly, and forms submit data as expected without manual intervention.
  • Debugging JavaScript: Quickly identify and fix errors in web page code by evaluating expressions and stepping through functions within the DevTools console.
  • Performance Analysis: Assess a website's loading speed and resource usage using DevTools performance profiling tools.
  • Accessibility Checks: Use DevTools to evaluate a webpage’s accessibility features, such as proper ARIA attributes or sufficient color contrast.

Key capabilities

  • Element inspection
  • JavaScript console evaluation
  • Simulated user interactions (clicks, form submissions)
  • Performance profiling
  • Accessibility auditing

Example prompts

  • "Click the 'Submit' button on this page."
  • "Evaluate document.title in the console and tell me the result."
  • "Run a performance audit of this website and report any bottlenecks."

Tips & gotchas

The agent requires access to a browser environment with DevTools enabled for this skill to function correctly. Complex testing scenarios may require careful prompt engineering to ensure accurate execution within the DevTools context.