Slop Eval

Overview

Evaluate a design the way skill-evaluation evaluates a skill: every finding cites concrete evidence, every axis gets a 0–100 score, arithmetic runs through a script, and the output is a structured report — never a vibe check.

Based on The pols.dev anti-slop design law — the tell catalog, absolute rules, and signature formula are distilled from it.

When to Use

• Evaluate whether a design looks generic/AI-generated
• Requests like “slop report”, “is this AI slop”, “audit this landing page design”, “de-slop review”
• Objective score of how templated/machine-made a design looks
• CI quality gate (block PR if Slop Index > threshold)
• Before delivering design to client or publishing

For text (not design), use human-ai (EN) or humanizar (PT-BR).

Installation

npx skills add https://github.com/fabricioctelles/skills -s slop-eval

8 Scored Axes

#	Axis	Weight	Scored from
1	Color & Light	2x	Tells C1–C15
2	Typography & Copy	2x	Tells T1–T10, W1–W3
3	Components & Ornament	1x	Tells K1–K27
4	Layout & Composition	2x	Tells L1–L21
5	Motion & Interaction	1x	Tells M1–M8
6	Execution & Craft	2x	Tells X1–X14
7	Signature & Uniqueness	3x	7-element formula
8	Cohesion	2x	4 checks

Grade Scale

Grade	Overall	Slop Index	Verdict
A	80–100	0–20	Premium — deliberate, signed, executed
B	60–79	21–40	Considered — mostly deliberate
C	40–59	41–60	Generic — clean but templated
D	20–39	61–80	Slop — assembled from presets
F	0–19	81–100	Pure slop

6 Absolute Rules

Each is pass/fail — failure is a critical tell that triggers the gate:

1. Content visible by default — nothing gated on entrance animation
2. Clear the cut — no text/control sliced by clip, notch, or overflow
3. Parallel alignment — comparable columns share baselines
4. Real centering — everything meant to be centered is (math and optical)
5. Legible contrast — every text clears its background by a real value gap
6. Controls work — every interactive-looking control responds

Evidence Channels

Channel	Can verify	Cannot verify
Code (CSS/JSX/HTML)	Fonts, hex values, gradients, shadows, radii, layout	Optical centering, rendered contrast, interactions
Screenshot(s)	Everything visual: palette, type, layout, alignment	Hover/scroll motion, dead controls
Live URL	All of the above plus interactions, motion, fold	Only what you didn’t exercise

Gates (Caps)

• Signature gate: Axis 7 < 40 → caps overall at 59 (grade C max). Clean design with no signature is still slop.
• Absolute-rule gate: any confirmed critical tell → caps overall at 69 (no grade A with broken execution).

CI Integration

.github/workflows/slop-gate.yml

- name: Slop gate
  run: |
    python3 skills/slop-eval/scripts/score.py overall \
      1:$A1:2 2:$A2:2 3:$A3:1 4:$A4:2 5:$A5:1 6:$A6:2 7:$A7:3 8:$A8:2 \
      --fail-below 40

Sources

• The pols.dev anti-slop design law
• Method modeled on skill-evaluation

📄 Full documentation on GitHub