image-validator

@chekos/image-validator

2 forks

Updated 4/12/2026

Validate images against tacosdedatos illustration style guide. Use this skill when reviewing generated images, checking uploaded images for brand consistency, providing quality feedback on visual assets, or deciding if an image is ready for publication. Returns pass/fail with specific actionable feedback.

Installation

$npx agent-skills-cli install @chekos/image-validator

Claude Code

Cursor

Copilot

Codex

Antigravity

Details

Repositorychekos/bns-marketplace

Pathtdd-design/skills/image-validator/SKILL.md

Branchmain

Scoped Name@chekos/image-validator

Usage

After installing, this skill will be available to your AI coding assistant.

Verify installation:

npx agent-skills-cli list

Skill Instructions

name: image-validator description: Validate images against tacosdedatos illustration style guide. Use this skill when reviewing generated images, checking uploaded images for brand consistency, providing quality feedback on visual assets, or deciding if an image is ready for publication. Returns pass/fail with specific actionable feedback.

Image Validator

Quality gate for tacosdedatos illustrations.

Reference: agents/shared/illustration-style-guide.md for authoritative mode definitions and color palette.

Validation Process

Step 1: Identify the Mode

First, determine which of the 7 modes the image fits (or should fit):

Mode	Key Identifiers
Abstract/Geometric	Shapes, lines, no figures, technical feel
Paper-Cut/Layered	Overlapping silhouettes, depth layers
Surrealist/Evocative	Dreamlike, unexpected combinations, emotional
Nature + Tech Fusion	Plants + data cards, organic + digital
Atmospheric/Cinematic	Scene-based, moody lighting, environment
Playful Cartoon	Expressive characters, dynamic, icons
Data Dashboard	Charts, visualizations, laptop/screens

If no mode fits: Flag as potentially off-brand.

Step 2: Run the Checklist

Check each criterion:

Core Requirements

Criterion	Check	Pass/Fail
Mode fit	Does it clearly fit one of the 7 modes?
Color palette	Are colors from the tacosdedatos palette?
Texture	Is there subtle grain/risograph texture?
No text	Is there any embedded text, labels, or watermarks?
Metaphor clarity	Is there a clear visual concept?
Negative space	Is there generous breathing room?
Aspect ratio	Is it landscape (~16:9 or 3:2)?

Color Validation

Check against palette:

Color	Hex	Present?
Negro Mezquite (bg)	`#121212`
Teal Oscuro (bg)	`#1a2e35`
Crema Nevada	`#F1FAEE`
Rojo Fuego	`#E63946`
Azul Niebla	`#A8DADC`
Naranja Cempasúchil	`#F4A261`
Verde Maguey	`#4E937A`

Tolerance: Colors don't need to be exact hex matches, but should be recognizably from the palette family. Flag if:

Bright/saturated colors outside palette
Pastel tones
Neon colors
Pure white backgrounds

Human Figure Check (if present)

Style	Acceptable?
Silhouette (solid, no features)	✓
Layered profile (overlapping heads)	✓
Flat character (simple shapes)	✓
Expressive cartoon (big eyes, gestures)	✓
Abstract avatar (icon-style)	✓
Atmospheric figure (stylized in scene)	✓
Photorealistic human	✗
Stock illustration style	✗
Generic corporate people	✗

Step 3: Score and Verdict

Scoring:

Each core criterion: 1 point
Total possible: 7 points

Verdicts:

Score	Verdict	Action
7/7	PASS	Ready for publication
5-6/7	PASS WITH NOTES	Minor issues, acceptable
3-4/7	NEEDS REVISION	Regenerate with fixes
0-2/7	FAIL	Start over with different approach

Output Format

Provide structured feedback:

## Image Validation Report

### Verdict: [PASS / PASS WITH NOTES / NEEDS REVISION / FAIL]

**Score**: X/7

### Mode Identified
[Mode name] - [Confidence: High/Medium/Low]

### Checklist Results

| Criterion | Result | Notes |
|-----------|--------|-------|
| Mode fit | ✓/✗ | |
| Color palette | ✓/✗ | |
| Texture | ✓/✗ | |
| No text | ✓/✗ | |
| Metaphor clarity | ✓/✗ | |
| Negative space | ✓/✗ | |
| Aspect ratio | ✓/✗ | |

### Issues Found
1. [Specific issue]
2. [Specific issue]

### Recommended Fixes
1. [Actionable fix]
2. [Actionable fix]

### Prompt Adjustment (if regenerating)
[Specific prompt changes to make]

Common Issues & Fixes

Issue: Unwanted Text

Detection: Any letters, numbers, words, labels visible

Fix: Add to negative prompt:

Absolutely no text, no letters, no words, no writing, no labels, no numbers, no watermarks

Issue: Wrong Colors

Detection: Colors outside palette (bright, pastel, neon)

Fix: Add explicit hex codes:

Colors MUST use only: #121212, #F1FAEE, #E63946, #A8DADC, #F4A261, #4E937A

Issue: Too Cluttered

Detection: No clear focal point, busy composition

Fix: Simplify prompt:

Single focal element. Generous negative space. Minimal composition. Clean and simple.

Issue: Missing Texture

Detection: Flat, plastic, or glossy appearance

Fix: Add texture cues:

Subtle risograph grain texture throughout. Matte finish. No glossy surfaces.

Issue: Photorealistic Style

Detection: Looks like a photo or 3D render

Fix: Emphasize style:

Flat digital illustration. No photorealism. No 3D render. No realistic textures.

Issue: Generic/Stock Style

Detection: Looks like corporate clip art or stock illustration

Fix: Be more specific about style:

In the style of modern editorial illustration. Sophisticated and unique. Not corporate clip art.

Issue: Wrong Aspect Ratio

Detection: Square or portrait orientation

Fix: Specify in generation settings:

aspect_ratio="16:9" or aspect_ratio="3:2"

Quick Validation (for simple checks)

For fast validation without full report:

## Quick Check: [Title]

**Verdict**: [PASS/FAIL]

**Key Issues** (if any):
- [Issue 1]
- [Issue 2]

**Fix**: [One-line recommendation]

Validation Examples

Example 1: PASS

Image: Abstract geometric shapes flowing into brain network

## Image Validation Report

### Verdict: PASS

**Score**: 7/7

### Mode Identified
Abstract/Geometric - Confidence: High

### Checklist Results

| Criterion | Result | Notes |
|-----------|--------|-------|
| Mode fit | ✓ | Clear geometric/abstract style |
| Color palette | ✓ | Uses #121212, #F1FAEE, #E63946, #A8DADC |
| Texture | ✓ | Subtle grain visible |
| No text | ✓ | Clean, no text |
| Metaphor clarity | ✓ | Clear AI/processing metaphor |
| Negative space | ✓ | Good breathing room |
| Aspect ratio | ✓ | Landscape 16:9 |

### Issues Found
None

### Recommended Fixes
None - ready for publication

Example 2: NEEDS REVISION

Image: Cartoon character but with text label

## Image Validation Report

### Verdict: NEEDS REVISION

**Score**: 5/7

### Mode Identified
Playful Cartoon - Confidence: High

### Checklist Results

| Criterion | Result | Notes |
|-----------|--------|-------|
| Mode fit | ✓ | Matches playful cartoon style |
| Color palette | ✓ | On-brand colors |
| Texture | ✗ | Too smooth, needs grain |
| No text | ✗ | Text label visible on character |
| Metaphor clarity | ✓ | Clear concept |
| Negative space | ✓ | Good composition |
| Aspect ratio | ✓ | Correct landscape |

### Issues Found
1. Text label "AI" visible on character's shirt
2. Missing subtle texture/grain

### Recommended Fixes
1. Regenerate with stronger "no text" negative
2. Add "subtle risograph grain texture" to prompt

### Prompt Adjustment
Add: "Absolutely no text, no letters, no writing. Subtle risograph grain texture throughout."

Integration Notes

This skill can be called:

By tacosdedatos-illustrator: After generation, before delivery
Standalone: When reviewing uploaded images
By other agents: Editor-in-Chief reviewing visual assets

The validator does not generate images—it only evaluates them.

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