addyosmani/agent-skills · skills/browser-testing-with-devtools/SKILL.md

browser-testing-with-devtools skillB

browser-testing-with-devtools is agent-read markdown (skill) from addyosmani/agent-skills: Tests in real browsers via Chrome DevTools MCP. Use when building or debugging anything that runs in a browser. Use when you need to inspect the DOM, capture console errors, analyze network requests, profile performance, or verify visual output with real runtime data. Requires the chrome-devtools MCP server to be configured..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add addyosmani/agent-skills/browser-testing-with-devtools@git:20260611.e8c9b46
Exact content
mdr add addyosmani/agent-skills/browser-testing-with-devtools@sha256:4e3aacd6a380cd25

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_xxlswbqwgd7iuwno.svg)](https://markdownregistry.com/a/art_xxlswbqwgd7iuwno)

0 badge views in 30 days

Versions

versioncommittedcommitsizeaudit
git:20260611.e8c9b46 latest2026-06-11 e8c9b46 14,539 BB view · diff
git:20260609.fd6554a2026-06-09 fd6554a 12,690 BB view · diff
git:20260512.4d277aa2026-05-12 4d277aa 12,559 BB view · diff
git:20260331.fea75b12026-03-31 fea75b1 12,501 BB view · diff
git:20260328.c1e7c252026-03-28 c1e7c25 12,477 BB view

Audit of the latest version

B  16 of 17 checks passed. Deterministic, no model, same answer every run.
  • fail: No prompt-injection phrasing (matched: Ignore previous instructions)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (14539 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

addyosmani/agent-skills · 95,786 stars · license MIT · pushed 2026-09-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_xxlswbqwgd7iuwno
GET https://markdownregistry.com/api/v1/resolve?ref=addyosmani/agent-skills/browser-testing-with-devtools
GET https://markdownregistry.com/api/v1/blob/4e3aacd6a380cd25bc6c2d67fdd1c926a9b22535b8a62109ecd33cefd909e3d9

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.