Agent Skill Grading Report: image-gen - Score 87/100 (B)

# ✅ Agent Skill Grading Report

**Score:** 87/100 | **Grade:** B

## Quick Summary of Agent Skill Grades

### Pillar Scores for Agent Skill

| Pillar | Score | Max |
|--------|-------|-----|
| Spec Compliance | 13 | 15 |
| Progressive Disclosure | 24 | 30 |
| Ease of Use | 22 | 25 |
| Writing Style | 7 | 10 |
| Utility | 17 | 20 |
| Modifiers | +4 | ±15 |

### Issues Found: 4
- 🔴 High: 0
- 🟡 Medium: 2
- 🟢 Low: 2

## 📊 Full Grading Report for Agent Skill

# Skill Evaluation Report: image-gen

**Links:**
- 📁 **GitHub:** [SpillwaveSolutions/image_gen](https://github.com/SpillwaveSolutions/image_gen/blob/main/SKILL.md)
- 🛒 **Marketplace:** [View on SkillzWave](https://skillzwave.ai/skill/spillwavesolutions__image_gen__image_gen__SKILL/)
- 📤 **Submit Skill:** [Submit to SkillzWave](https://skillzwave.ai/submit/) - Skills are ranked, graded, and scanned for security
- 📊 **Tracking:** [All Graded Skills](https://github.com/SpillwaveSolutions/skill_improver/issues)

**Evaluated:** 2026-01-12
**Files Reviewed:** SKILL.md, README.md, references/prompting_guide.md
**Grading Model:** Claude (default) (via claude)

---

## Overall Score: 87/100

| Pillar | Score | Max |
|--------|-------|-----|
| Progressive Disclosure Architecture | 24 | 30 |
| Ease of Use | 22 | 25 |
| Spec Compliance | 13 | 15 |
| Writing Style | 7 | 10 |
| Utility | 17 | 20 |
| Modifiers | +4 | ±15 |

**Grade: B**

---

## Executive Summary

This skill shows solid fundamentals with a score of 87/100. Strongest area: **Ease of Use** (22/25).

---

## Detailed Scores

### Progressive Disclosure Architecture (24/30)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Token Economy | 7 | 10 | Good density but some redundancy between SKILL.md overview and prompting_guide.md content; examples repeated in both files |
| Layered Structure | 8 | 10 | Clear separation with reference file for detailed prompting; main file is actionable workflow |
| Reference Depth | 5 | 5 | Single reference file at one level deep; correctly structured |
| Navigation Signals | 4 | 5 | TOC present for 264-line file; clear H2/H3 headers throughout |

### Ease of Use (22/25)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Metadata Quality | 9 | 10 | Descriptive name; excellent trigger terms in description (generate images, cover image, article illustrations, visual assets) |
| Discoverability | 6 | 6 | Strong trigger list in When to Use section; activates on clear intent signals |
| Terminology Consistency | 4 | 4 | Consistent use of 'cover image' vs 'in-article image' throughout; 'imagen' tool referenced uniformly |
| Workflow Clarity | 3 | 5 | 5 numbered steps but Step 4 split into 4a/4b adds complexity; checklists present |

### Spec Compliance (13/15)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Frontmatter Validity | 5 | 5 | Valid YAML with required fields |
| Name Conventions | 4 | 4 | Correct hyphen-case format |
| Description Quality | 4 | 4 | Third-person with good trigger coverage |
| Optional Fields | 0 | 2 | No optional fields used (no penalty) |

### Writing Style (7/10)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Voice And Tense | 3 | 4 | Mostly imperative form; occasional second-person ('you' in tips) but minimal |
| Objectivity | 2 | 3 | Some marketing language: 'stunning', 'wow factor', 'compelling', 'high-impact' |
| Conciseness | 2 | 3 | Generally focused but some verbose example sections; prompting_guide repeats SKILL.md concepts |

### Utility (17/20)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Problem Solving Power | 7 | 8 | Addresses real need for technical article imagery; practical imagen CLI integration |
| Degrees Of Freedom | 4 | 5 | Good flexibility in patterns (1-4 images); structured but not rigid approach |
| Feedback Loops | 3 | 4 | Step 5 verification checklist present; file path verification included |
| Examples And Templates | 3 | 3 | Excellent concrete prompts with full bash commands; pattern templates for different article types |

### Modifiers Applied (+4)

**Penalties:** None
**Bonuses:** grep_friendly_structure (+1), exemplary_examples (+2), trigger_phrases_4plus (+1)

---

## Critical Issues (Top 4)

### Issue 1: Marketing language in technical skill

**Severity:** Medium
**Location:** SKILL.md:Step 2, references/prompting_guide.md:section 3
**Pillar Affected:** Writing Style

**Problem:** Uses promotional language like 'stunning', 'wow factor', 'compelling' which is inappropriate for instructional content

**Current:**
```
Create a 'wow' factor... A stunning digital art cover image...
```

**Suggested Rewrite:**
```
Create high visual impact... A detailed digital art cover image...
```

**Impact:** +1 point

---

### Issue 2: Duplicate content between files

**Severity:** Medium
**Location:** SKILL.md:lines 67-99 vs references/prompting_guide.md:lines 48-79
**Pillar Affected:** PDA

**Problem:** Cover/in-article prompting principles repeated in both SKILL.md and reference file, wasting tokens

**Current:**
```
Same prompt engineering principles explained twice in main skill and reference
```

**Suggested Rewrite:**
```
Keep brief summary in SKILL.md, full detail only in prompting_guide.md with 'See references/prompting_guide.md' pointer
```

**Impact:** +2 points

---

### Issue 3: Step numbering inconsistency

**Severity:** Low
**Location:** SKILL.md:Step 4a/4b
**Pillar Affected:** Ease of Use

**Problem:** Splitting Step 4 into 4a and 4b breaks sequential workflow clarity

**Current:**
```
Step 4a: Integrate Images / Step 4b: Write ALT Text
```

**Suggested Rewrite:**
```
Step 4: Integrate Images / Step 5: Write ALT Text / Step 6: Verify and Save
```

**Impact:** +1 point

---

### Issue 4: Missing error handling guidance

**Severity:** Low
**Location:** SKILL.md:Command Reference
**Pillar Affected:** Utility

**Problem:** No guidance on what to do if imagen command fails or produces poor results

**Current:**
```
Basic usage only with success path
```

**Suggested Rewrite:**
```
Add troubleshooting section: regeneration strategies, prompt refinement on poor output
```

**Impact:** +1 point

---

## General Recommendations

1. Add trigger phrases to description for discoverability
2. Add table of contents for files over 100 lines

---

## Grade Scale

| Grade | Score | Description |
|-------|-------|-------------|
| A | 90-100 | Production-ready |
| B | 80-89 | Good, minor work |
| C | 70-79 | Adequate, gaps |
| D | 60-69 | Needs work |
| F | <60 | Major revision |

---

---

## About This Report

This evaluation uses the [Claude Skills Best Practices](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices).

**Powered by:**
- [SkillzWave](https://skillzwave.ai) - Claude Skills Marketplace
- [SpillWave](https://spillwave.com) - AI Solutions

*Report generated for [SpillwaveSolutions/image_gen](https://github.com/SpillwaveSolutions/image_gen/blob/main/SKILL.md)*

## JSON Output

```json
{
  "skill_name": "image-gen",
  "evaluated_at": "2026-01-12T20:26:49.133897",
  "files_reviewed": [
    "SKILL.md",
    "README.md",
    "references/prompting_guide.md"
  ],
  "scores": {
    "spec_compliance": {
      "total": 13,
      "max": 15,
      "breakdown": {
        "frontmatter_validity": {
          "score": 5,
          "max": 5,
          "assessment": "Valid YAML with required fields"
        },
        "name_conventions": {
          "score": 4,
          "max": 4,
          "assessment": "Correct hyphen-case format"
        },
        "description_quality": {
          "score": 4,
          "max": 4,
          "assessment": "Third-person with good trigger coverage"
        },
        "optional_fields": {
          "score": 0,
          "max": 2,
          "assessment": "No optional fields used (no penalty)"
        }
      }
    },
    "pda": {
      "total": 24,
      "max": 30,
      "breakdown": {
        "token_economy": {
          "score": 7,
          "max": 10,
          "assessment": "Good density but some redundancy between SKILL.md overview and prompting_guide.md content; examples repeated in both files"
        },
        "layered_structure": {
          "score": 8,
          "max": 10,
          "assessment": "Clear separation with reference file for detailed prompting; main file is actionable workflow"
        },
        "reference_depth": {
          "score": 5,
          "max": 5,
          "assessment": "Single reference file at one level deep; correctly structured"
        },
        "navigation_signals": {
          "score": 4,
          "max": 5,
          "assessment": "TOC present for 264-line file; clear H2/H3 headers throughout"
        }
      }
    },
    "ease_of_use": {
      "total": 22,
      "max": 25,
      "breakdown": {
        "metadata_quality": {
          "score": 9,
          "max": 10,
          "assessment": "Descriptive name; excellent trigger terms in description (generate images, cover image, article illustrations, visual assets)"
        },
        "discoverability": {
          "score": 6,
          "max": 6,
          "assessment": "Strong trigger list in When to Use section; activates on clear intent signals"
        },
        "terminology_consistency": {
          "score": 4,
          "max": 4,
          "assessment": "Consistent use of 'cover image' vs 'in-article image' throughout; 'imagen' tool referenced uniformly"
        },
        "workflow_clarity": {
          "score": 3,
          "max": 5,
          "assessment": "5 numbered steps but Step 4 split into 4a/4b adds complexity; checklists present"
        }
      }
    },
    "writing_style": {
      "total": 7,
      "max": 10,
      "breakdown": {
        "voice_and_tense": {
          "score": 3,
          "max": 4,
          "assessment": "Mostly imperative form; occasional second-person ('you' in tips) but minimal"
        },
        "objectivity": {
          "score": 2,
          "max": 3,
          "assessment": "Some marketing language: 'stunning', 'wow factor', 'compelling', 'high-impact'"
        },
        "conciseness": {
          "score": 2,
          "max": 3,
          "assessment": "Generally focused but some verbose example sections; prompting_guide repeats SKILL.md concepts"
        }
      }
    },
    "utility": {
      "total": 17,
      "max": 20,
      "breakdown": {
        "problem_solving_power": {
          "score": 7,
          "max": 8,
          "assessment": "Addresses real need for technical article imagery; practical imagen CLI integration"
        },
        "degrees_of_freedom": {
          "score": 4,
          "max": 5,
          "assessment": "Good flexibility in patterns (1-4 images); structured but not rigid approach"
        },
        "feedback_loops": {
          "score": 3,
          "max": 4,
          "assessment": "Step 5 verification checklist present; file path verification included"
        },
        "examples_and_templates": {
          "score": 3,
          "max": 3,
          "assessment": "Excellent concrete prompts with full bash commands; pattern templates for different article types"
        }
      }
    }
  },
  "modifiers": {
    "penalties": [],
    "bonuses": [
      {
        "name": "grep_friendly_structure",
        "points": 1
      },
      {
        "name": "exemplary_examples",
        "points": 2
      },
      {
        "name": "trigger_phrases_4plus",
        "points": 1
      }
    ],
    "net": 4
  },
  "final_score": 87,
  "grade": "B",
  "critical_issues": [
    {
      "rank": 1,
      "title": "Marketing language in technical skill",
      "severity": "Medium",
      "location": "SKILL.md:Step 2, references/prompting_guide.md:section 3",
      "pillar": "Writing Style",
      "problem": "Uses promotional language like 'stunning', 'wow factor', 'compelling' which is inappropriate for instructional content",
      "current": "Create a 'wow' factor... A stunning digital art cover image...",
      "suggested": "Create high visual impact... A detailed digital art cover image...",
      "impact": "+1 point"
    },
    {
      "rank": 2,
      "title": "Duplicate content between files",
      "severity": "Medium",
      "location": "SKILL.md:lines 67-99 vs references/prompting_guide.md:lines 48-79",
      "pillar": "PDA",
      "problem": "Cover/in-article prompting principles repeated in both SKILL.md and reference file, wasting tokens",
      "current": "Same prompt engineering principles explained twice in main skill and reference",
      "suggested": "Keep brief summary in SKILL.md, full detail only in prompting_guide.md with 'See references/prompting_guide.md' pointer",
      "impact": "+2 points"
    },
    {
      "rank": 3,
      "title": "Step numbering inconsistency",
      "severity": "Low",
      "location": "SKILL.md:Step 4a/4b",
      "pillar": "Ease of Use",
      "problem": "Splitting Step 4 into 4a and 4b breaks sequential workflow clarity",
      "current": "Step 4a: Integrate Images / Step 4b: Write ALT Text",
      "suggested": "Step 4: Integrate Images / Step 5: Write ALT Text / Step 6: Verify and Save",
      "impact": "+1 point"
    },
    {
      "rank": 4,
      "title": "Missing error handling guidance",
      "severity": "Low",
      "location": "SKILL.md:Command Reference",
      "pillar": "Utility",
      "problem": "No guidance on what to do if imagen command fails or produces poor results",
      "current": "Basic usage only with success path",
      "suggested": "Add troubleshooting section: regeneration strategies, prompt refinement on poor output",
      "impact": "+1 point"
    }
  ],
  "recommendations": [
    "Add trigger phrases to description for discoverability",
    "Add table of contents for files over 100 lines"
  ],
  "code_quality": null,
  "grading_model": "Claude (default)",
  "grading_provider": "claude"
}
```

**Links:**
- 📁 **GitHub:** [spillwavesolutions/image_gen](https://github.com/spillwavesolutions/image_gen/blob/main/SKILL.md)
- 🛒 **Marketplace:** [View on SkillzWave](https://skillzwave.ai/skill/spillwavesolutions__image_gen__image_gen__SKILL/)
- 📤 **Submit Skill:** [Submit to SkillzWave](https://skillzwave.ai/submit/) - Skills are ranked, graded, and scanned for security
- 📊 **Tracking:** [All Graded Skills](https://github.com/SpillwaveSolutions/skill_improver/issues)

---

## 📦 Recommended: Add Universal Installer Instructions

Consider adding these installation instructions to your README.md to help users install this skill across 14+ AI coding agents:

```markdown
## Installing with Skilz (Universal Installer)

The recommended way to install this skill across different AI coding agents is using the **skilz** universal installer.

### Install Skilz

```bash
pip install skilz
```

This skill supports [Agent Skill Standard](https://agentskills.io/) which means it supports 14 plus coding agents including Claude Code, OpenAI Codex, Cursor and Gemini.


### Git URL Options

```

# Install for Claude Code (your home directory)
skilz install -g https://github.com/spillwavesolutions/image_gen

# Or from the SkillzWave marketplace
skilz install spillwavesolutions__image_gen__image_gen
```

### Claude Code

Install to user home (available in all projects):
```bash
skilz install -g https://github.com/spillwavesolutions/image_gen
```

Install to current project only:
```bash
skilz install -g https://github.com/spillwavesolutions/image_gen --project
```

### OpenCode

Install for [OpenCode](https://opencode.ai):

```bash

# OpenCode
skilz install https://github.com/spillwavesolutions/image_gen --agent opencode

```

Install for Codex and Gemini too
```
# Gemini CLI
skilz install https://github.com/spillwavesolutions/image_gen --agent gemini


# OpenAI Codex
skilz install https://github.com/spillwavesolutions/image_gen --agent codex

```

Project-level install:
```bash
skilz install https://github.com/spillwavesolutions/image_gen --project --agent codex
```


### Install from Skillzwave Marketplace
```bash
skilz install spillwavesolutions__image_gen__image_gen --project
```

See this site [skill Listing](https://skillzwave.ai/skill/spillwavesolutions__image_gen__image_gen__SKILL/) to see how to install this exact skill to 14+ different coding agents.


### Other Supported Agents

Skilz supports 20+ coding agents including Claude Code, OpenAI Codex, OpenCode, Cursor, Gemini CLI, GitHub Copilot CLI, Windsurf, Qwen Code, Aidr, and more.

See the [skill on SkillzWave](https://skillzwave.ai/skill/spillwavesolutions__image_gen__image_gen__SKILL/) for agent-specific install commands, or check the [skilz-cli docs](https://github.com/SpillwaveSolutions/skilz-cli).


[SkillzWave](https://skillzwave.ai) is a skill marketplace for AI agents. [SpillWave](https://spillwave.com) (where I work) builds AI agent tools.
```

---

## About This Report

This evaluation uses the [Claude Skills Best Practices](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices).

**Powered by:**
- [SkillzWave](https://skillzwave.ai) - Claude Skills Marketplace
- [SpillWave](https://spillwave.com) - AI Solutions

*Report generated for [spillwavesolutions/image_gen](https://github.com/spillwavesolutions/image_gen/blob/main/SKILL.md)*

Pillar	Score	Max
Spec Compliance	13	15
Progressive Disclosure	24	30
Ease of Use	22	25
Writing Style	7	10
Utility	17	20
Modifiers	+4	±15

Pillar	Score	Max
Progressive Disclosure Architecture	24	30
Ease of Use	22	25
Spec Compliance	13	15
Writing Style	7	10
Utility	17	20
Modifiers	+4	±15

Criterion	Score	Max	Assessment
Token Economy	7	10	Good density but some redundancy between SKILL.md overview and prompting_guide.md content; examples repeated in both files
Layered Structure	8	10	Clear separation with reference file for detailed prompting; main file is actionable workflow
Reference Depth	5	5	Single reference file at one level deep; correctly structured
Navigation Signals	4	5	TOC present for 264-line file; clear H2/H3 headers throughout

Criterion	Score	Max	Assessment
Metadata Quality	9	10	Descriptive name; excellent trigger terms in description (generate images, cover image, article illustrations, visual assets)
Discoverability	6	6	Strong trigger list in When to Use section; activates on clear intent signals
Terminology Consistency	4	4	Consistent use of 'cover image' vs 'in-article image' throughout; 'imagen' tool referenced uniformly
Workflow Clarity	3	5	5 numbered steps but Step 4 split into 4a/4b adds complexity; checklists present

Criterion	Score	Max	Assessment
Frontmatter Validity	5	5	Valid YAML with required fields
Name Conventions	4	4	Correct hyphen-case format
Description Quality	4	4	Third-person with good trigger coverage
Optional Fields	0	2	No optional fields used (no penalty)

Criterion	Score	Max	Assessment
Voice And Tense	3	4	Mostly imperative form; occasional second-person ('you' in tips) but minimal
Objectivity	2	3	Some marketing language: 'stunning', 'wow factor', 'compelling', 'high-impact'
Conciseness	2	3	Generally focused but some verbose example sections; prompting_guide repeats SKILL.md concepts

Criterion	Score	Max	Assessment
Problem Solving Power	7	8	Addresses real need for technical article imagery; practical imagen CLI integration
Degrees Of Freedom	4	5	Good flexibility in patterns (1-4 images); structured but not rigid approach
Feedback Loops	3	4	Step 5 verification checklist present; file path verification included
Examples And Templates	3	3	Excellent concrete prompts with full bash commands; pattern templates for different article types

Grade	Score	Description
A	90-100	Production-ready
B	80-89	Good, minor work
C	70-79	Adequate, gaps
D	60-69	Needs work
F	<60	Major revision

Agent Skill Grading Report: image-gen - Score 87/100 (B) #23

Description

✅ Agent Skill Grading Report

Quick Summary of Agent Skill Grades

Pillar Scores for Agent Skill

Issues Found: 4

📊 Full Grading Report for Agent Skill

Skill Evaluation Report: image-gen

Overall Score: 87/100

Executive Summary

Detailed Scores

Progressive Disclosure Architecture (24/30)

Ease of Use (22/25)

Spec Compliance (13/15)

Writing Style (7/10)

Utility (17/20)

Modifiers Applied (+4)

Critical Issues (Top 4)

Issue 1: Marketing language in technical skill

Issue 2: Duplicate content between files

Issue 3: Step numbering inconsistency

Issue 4: Missing error handling guidance

General Recommendations

Grade Scale

About This Report

JSON Output

📦 Recommended: Add Universal Installer Instructions

Git URL Options

Claude Code

OpenCode

Install from Skillzwave Marketplace

Other Supported Agents

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions