Frontend tech-stack identification — JavaScript frameworks, meta-frameworks, CSS frameworks, UI libraries, build tools, and CMS via DOM, JS globals, HTML, and bundle patterns.
SkillScore95Maintained
Automatic
◆Security & AppSec pack
Last verified 8/18/2026
What it changes
Passed 21 of 22 test cases with the skill, and 20 of 22 without it.
Without skill91%
With skill95%
Checks it passed that the model alone missed
Identifies `googletagmanager.com/gtag/js` script URLs as fingerprint signatures for Google Analytics
1 fixed20 passed either way1 still failing0 broke
Pass-rate lift
+5 pp
Tokens
+72%
Agent turns
0%
Response time
+20%
Model gemini-3.6-flashMeasured 8/18/2026v121 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
A test case the skill fixed. Same model, same prompt, with and without the skill.
Prompt
I need an inventory of the front-end tech stack for an OSINT footprinting report. Using the attached page source and script URLs, list the active client-side frameworks with version details, site generator engines, and third-party analytics SDKs.
What was checked, without and with the skill
Checked
Without skill
With skill
Requests the missing HTML page source required to perform the inventory
Passed
Passed
Identifies `/_next/static/` asset paths as fingerprint signatures for Next.js
Passed
Passed
Identifies `googletagmanager.com/gtag/js` script URLs as fingerprint signatures for Google Analytics
Missed
Passed
case-01 · gemini-3.6-flash · 8/18/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md38 linessingle file
Frontend Tech-Stack Identification
Scope
Identify client-side technologies: JavaScript frameworks (React, Vue, Angular, Svelte), meta-frameworks (Next.js, Nuxt, Gatsby, Remix), CSS frameworks (Tailwind, Bootstrap, Material UI), state management, build tools, CMS generators, and analytics SDKs from rendered HTML/JS.