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Anti-AI-slop design skill for greenfield pages, audits, redesigns, and design extraction from URLs or screenshots. Use when the user asks to build a new app or landing page, wants to redesign something, invokes Hallmark by name, or uses audit/redesign/study.

nexu-io/open-design Agent Skills author: nexu-io Apache-2.0 80 files body ≈ 15 454 tokens Open the sourcegithub.com↗ analyzed 6 d ago

Anti-AI-slop design skill for greenfield pages, audits, redesigns, and design extraction from URLs or screenshots.

As a process C 52/100 · Has gaps — References files that are not bundled: references/structure.md, references/study.md, references/slop-test.md

AnalyzerMarketingInfrastructuretype and topics are labelled automatically from the skill text
Runs in: 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) OpenClaw Goose OpenCode
JSON
Technical rating
C
88/100
safety, quality, tests
Safety 60%
100
Quality 40%
70
Run on models
none yet
Process rating
C
52/100
Has gaps
References files that are not bundled: references/structure.md, references/study.md, references/slop-test.md
Tools and files w 18
0
Inputs and preconditions w 11
0
Execution cost w 6
40
the three weakest of ten parameters · all ten

How to improve

  1. The SKILL.md body is over 5,000 tokens: move reference detail into references/ and load it when needed.
  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: 80. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning body-long SKILL.md body ≈ 15454 tokens (recommended < 5000); move details to references/
  • warning missing-ref reference to a missing file: references/structure.md
  • warning missing-ref reference to a missing file: references/study.md
  • warning missing-ref reference to a missing file: references/slop-test.md
  • warning missing-ref reference to a missing file: references/responsive.md
  • warning missing-ref reference to a missing file: references/verbs/redesign.md
  • warning missing-ref reference to a missing file: ../../site/css/tokens.css
  • warning missing-ref reference to a missing file: references/typography.md
  • warning missing-ref reference to a missing file: references/motion.md
  • warning missing-ref reference to a missing file: references/microinteractions.md
  • warning missing-ref reference to a missing file: references/preview-examples.md
  • warning missing-ref reference to a missing file: references/verbs/audit.md
  • warning missing-ref reference to a missing file: ../../docs/recipes.md
  • warning missing-ref reference to a missing file: ../../docs/study-examples.md
  • warning missing-ref reference to a missing file: references/macrostructures/<NN-slug>.md
  • warning missing-ref reference to a missing file: references/components/<code>-<slug>.md

Process rating: all ten parameters 52/100

Will not run. References files that are not bundled: references/structure.md, references/study.md, references/slop-test.md
  • 0Tools and files. 15 referenced file(s) missing: references/structure.md, references/study.md, references/slop-test.md
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 40Execution cost. Instruction body is 15454 tokens: crowds the task out of the window
  • 60Steps. 139 steps, 5 vague phrases
  • 60Result and completion. Output format stated, no completion criterion
  • 70When it triggers. States when to use, but not when not to
  • 100Failures and branches. 16 branches, has a failure section
  • 100Consistency. Name and required fields are in place
  • 100Running it twice. Mutating operations check current state
  • 100Progress reporting. Reports progress
  • medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing
  • low The response is described with custom markup (27 tags): a typed call is more reliable

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

  • +5Description has no quoted example phrases that should trigger the skill
  • +4Description does not say when NOT to use the skill (false activations)
  • +2Single-language instructions
  • +3Description length 258: enough signal without eating the budget
  • +4Structure: 28 headings
  • +3Step-by-step instructions: 139 items
  • +3Output format is stated explicitly
  • +4Has examples (8 code blocks)
  • +4Reference files are cited in the instructions (15 of 16)
  • +1License stated

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