SKILLEMALL.ai
RU Sign in

BF CSS Dead Code

Unused CSS detector and dead selector auditor. Scans your stylesheet files against all HTML, JSX, TSX, Vue, and template files to find selectors that are defined but never referenced anywhere in your codebase. Detects CSS framework (Tailwind, Bootstrap, CSS Modules, vanilla CSS, Sass/SCSS) and applies the right analysis strategy for each. Reports estimated byte savings per dead rule, finds !important overuse, duplicate selectors, and orphaned media-query blocks. Generates a safe-deletion plan with exact grep verification commands. Works with PostCSS, Sass, Less, and raw CSS. Zero external API — uses npx and grep only. Triggers on "unused CSS", "dead CSS", "CSS bloat", "remove unused styles", "CSS cleanup", "what CSS can I delete", "/css-dead-code".

ClawHub Agent Skills author: Lucius Pang v1.0.3 MIT-0 2 files body ≈ 4 443 tokens Open the sourceclawhub.ai↗ analyzed 2 d ago

As a process F 32/100 · Will not run — References files that are not bundled: [^"\']+, [a-z][a-z0-9-_]+

AnalyzerSoftware developmenttype and topics are labelled automatically from the skill text
Runs in: OpenClaw Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) Goose OpenCode
JSON
Technical rating
B
85/100
safety, quality, tests
Safety 60%
100
Quality 40%
63
Run on models
none yet
Process rating
F
32/100
Will not run
References files that are not bundled: [^"\']+, [a-z][a-z0-9-_]+
Tools and files w 18
0
Result and completion w 14
0
Inputs and preconditions w 11
0
the three weakest of ten parameters · all ten

How to improve

  1. Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
  2. The text references files that are not there: add them or drop the references.
For the model run — optional
  • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 0

✓ No critical or high findings

Files scanned: 2. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning name-format name should be kebab-case (lowercase letters, digits, hyphens)
  • warning description-no-when description does not say WHEN to use the skill (no "use when")
  • warning missing-ref reference to a missing file: [^"\']+
  • warning missing-ref reference to a missing file: [a-z][a-z0-9-_]+
  • note frontmatter-key unknown frontmatter key "homepage"

Process rating: all ten parameters 32/100

Will not run. References files that are not bundled: [^"\']+, [a-z][a-z0-9-_]+
  • 0Tools and files. 2 referenced file(s) missing: [^"\']+, [a-z][a-z0-9-_]+
  • 0Result and completion. Does not say what the result is
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 0Failures and branches. Linear process with no failure handling
  • 0Progress reporting. Says nothing while it works
  • 30Running it twice. 12 mutating operations with no state check
  • 40Consistency. Frontmatter name (CSS Dead Code) differs from the folder (phy-css-dead-code)
  • 70When it triggers. States when to use, but not when not to
  • 70Execution cost. Instruction body is 4443 tokens
  • 100Steps. 12 steps
  • medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing
  • low 10 top-level sections: this looks like several domains in one skill

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +4Description does not say when NOT to use the skill (false activations)
  • +3Output format is not stated: the model decides each time
  • +2Single-language instructions
  • +5Description quotes 7 example trigger phrases
  • +3Description length 758: enough signal without eating the budget
  • +4Structure: 23 headings
  • +3Step-by-step instructions: 12 items
  • +4Has examples (18 code blocks)
  • +1License stated

Quality base 70; lint remarks subtract, signals add up to 100. Result: 63.

External checks

ClawHub: suspicious
This is a coherent CSS cleanup helper, but it should be reviewed because it gives overconfident deletion guidance and ready-to-run file removal commands based on heuristic scans.
LLM: suspicious (high) · VirusTotal: · 29 May 2026