Agent Skill Grading Report: mastering-typescript - 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 | 27 | 30 |
| Ease of Use | 22 | 25 |
| Writing Style | 8 | 10 |
| Utility | 18 | 20 |
| Modifiers | -1 | ±15 |

### Issues Found: 3
- 🔴 High: 0
- 🟡 Medium: 0
- 🟢 Low: 3

## 📊 Full Grading Report for Agent Skill

# Skill Evaluation Report: mastering-typescript

**Links:**
- 📁 **GitHub:** [SpillwaveSolutions/mastering-typescript-skill](https://github.com/SpillwaveSolutions/mastering-typescript-skill/blob/main/mastering-typescript/SKILL.md)
- 🛒 **Marketplace:** [View on SkillzWave](https://skillzwave.ai/skill/spillwavesolutions__mastering-typescript-skill__mastering-typescript__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:** mastering-typescript/SKILL.md, references/enterprise-patterns.md, references/toolchain.md, references/type-system.md, references/nestjs-integration.md, references/generics.md, references/react-integration.md
**Grading Model:** Claude (default) (via claude)

---

## Overall Score: 87/100

| Pillar | Score | Max |
|--------|-------|-----|
| Progressive Disclosure Architecture | 27 | 30 |
| Ease of Use | 22 | 25 |
| Spec Compliance | 13 | 15 |
| Writing Style | 8 | 10 |
| Utility | 18 | 20 |
| Modifiers | -1 | ±15 |

**Grade: B**

---

## Executive Summary

This skill shows solid fundamentals with a score of 87/100. Strongest area: **Progressive Disclosure Architecture** (27/30).

---

## Detailed Scores

### Progressive Disclosure Architecture (27/30)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Token Economy | 9 | 10 | SKILL.md is dense with working code examples; minimal fluff; every section actionable |
| Layered Structure | 9 | 10 | Clear separation: SKILL.md overview with 6 deep-dive references plus assets and scripts |
| Reference Depth | 5 | 5 | All references exactly one level deep; clear Load when directives in each file |
| Navigation Signals | 4 | 5 | All reference files have TOC; SKILL.md at 442 lines could benefit from TOC |

### Ease of Use (22/25)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Metadata Quality | 9 | 10 | Comprehensive description with specific triggers; 14 trigger terms covering key use cases |
| Discoverability | 5 | 6 | Excellent trigger coverage: typescript, ts, nestjs, react, zod, satisfies, mapped types |
| Terminology Consistency | 4 | 4 | Consistent terminology throughout; uses satisfies, type guards, mapped types uniformly |
| Workflow Clarity | 4 | 5 | Quick Start with copy-paste commands; Project Setup Checklist; clear numbered steps |

### 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 | 3 | 4 | Only 1-2 trigger phrases |
| Optional Fields | 1 | 2 | Uses license |

### Writing Style (8/10)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Voice And Tense | 3 | 4 | Mostly imperative form; occasional second-person usage in explanations |
| Objectivity | 3 | 3 | Purely instructional; no marketing language; focuses on practical patterns |
| Conciseness | 2 | 3 | Good density overall but some sections could be trimmed; Common Mistakes table is efficient |

### Utility (18/20)

| Criterion | Score | Max | Assessment |
|-----------|-------|-----|------------|
| Problem Solving Power | 7 | 8 | Addresses real gaps: type-safe patterns, Zod validation, framework integration, migration strategies |
| Degrees Of Freedom | 5 | 5 | Appropriate constraints; shows patterns without being overly prescriptive; templates customizable |
| Feedback Loops | 3 | 4 | validate-setup.sh script provides verification; Common Mistakes table helps self-correction |
| Examples And Templates | 3 | 3 | Abundant working examples; tsconfig and eslint templates ready to use; input/output clear |

### Modifiers Applied (-1)

**Penalties:** xml_tags_in_metadata (-5), deeply_nested_references (-2)
**Bonuses:** copy_paste_checklists (+2), grep_friendly_structure (+1), exemplary_examples (+2), gerund_style_name (+1)

---

## Critical Issues (Top 3)

### Issue 1: Missing TOC in SKILL.md

**Severity:** Low
**Location:** SKILL.md:top
**Pillar Affected:** PDA

**Problem:** SKILL.md is 442 lines but lacks a Table of Contents for navigation

**Current:**
```
No TOC at top of SKILL.md
```

**Suggested Rewrite:**
```
Add ## Contents section after Quick Start listing all major sections with anchor links
```

**Impact:** +1 points

---

### Issue 2: Second-person voice in some sections

**Severity:** Low
**Location:** SKILL.md:When to Use This Skill
**Pillar Affected:** Writing Style

**Problem:** Uses 'Use when:' which is good, but some reference files use 'you' addressing

**Current:**
```
Various 'you' references in explanatory text
```

**Suggested Rewrite:**
```
Rephrase to imperative form: 'Apply when building...' instead of 'Use when you are building...'
```

**Impact:** +1 points

---

### Issue 3: Reference files vary in conciseness

**Severity:** Low
**Location:** references/*.md
**Pillar Affected:** Writing Style

**Problem:** Some reference files have verbose explanations that could be more compact

**Current:**
```
enterprise-patterns.md includes lengthy code blocks with inline comments
```

**Suggested Rewrite:**
```
Consolidate related patterns; remove obvious inline comments in code examples
```

**Impact:** +1 points

---

## 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/mastering-typescript-skill](https://github.com/SpillwaveSolutions/mastering-typescript-skill/blob/main/mastering-typescript/SKILL.md)*

## JSON Output

```json
{
  "skill_name": "mastering-typescript",
  "evaluated_at": "2026-01-12T20:38:53.204508",
  "files_reviewed": [
    "mastering-typescript/SKILL.md",
    "references/enterprise-patterns.md",
    "references/toolchain.md",
    "references/type-system.md",
    "references/nestjs-integration.md",
    "references/generics.md",
    "references/react-integration.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": 3,
          "max": 4,
          "assessment": "Only 1-2 trigger phrases"
        },
        "optional_fields": {
          "score": 1,
          "max": 2,
          "assessment": "Uses license"
        }
      }
    },
    "pda": {
      "total": 27,
      "max": 30,
      "breakdown": {
        "token_economy": {
          "score": 9,
          "max": 10,
          "assessment": "SKILL.md is dense with working code examples; minimal fluff; every section actionable"
        },
        "layered_structure": {
          "score": 9,
          "max": 10,
          "assessment": "Clear separation: SKILL.md overview with 6 deep-dive references plus assets and scripts"
        },
        "reference_depth": {
          "score": 5,
          "max": 5,
          "assessment": "All references exactly one level deep; clear Load when directives in each file"
        },
        "navigation_signals": {
          "score": 4,
          "max": 5,
          "assessment": "All reference files have TOC; SKILL.md at 442 lines could benefit from TOC"
        }
      }
    },
    "ease_of_use": {
      "total": 22,
      "max": 25,
      "breakdown": {
        "metadata_quality": {
          "score": 9,
          "max": 10,
          "assessment": "Comprehensive description with specific triggers; 14 trigger terms covering key use cases"
        },
        "discoverability": {
          "score": 5,
          "max": 6,
          "assessment": "Excellent trigger coverage: typescript, ts, nestjs, react, zod, satisfies, mapped types"
        },
        "terminology_consistency": {
          "score": 4,
          "max": 4,
          "assessment": "Consistent terminology throughout; uses satisfies, type guards, mapped types uniformly"
        },
        "workflow_clarity": {
          "score": 4,
          "max": 5,
          "assessment": "Quick Start with copy-paste commands; Project Setup Checklist; clear numbered steps"
        }
      }
    },
    "writing_style": {
      "total": 8,
      "max": 10,
      "breakdown": {
        "voice_and_tense": {
          "score": 3,
          "max": 4,
          "assessment": "Mostly imperative form; occasional second-person usage in explanations"
        },
        "objectivity": {
          "score": 3,
          "max": 3,
          "assessment": "Purely instructional; no marketing language; focuses on practical patterns"
        },
        "conciseness": {
          "score": 2,
          "max": 3,
          "assessment": "Good density overall but some sections could be trimmed; Common Mistakes table is efficient"
        }
      }
    },
    "utility": {
      "total": 18,
      "max": 20,
      "breakdown": {
        "problem_solving_power": {
          "score": 7,
          "max": 8,
          "assessment": "Addresses real gaps: type-safe patterns, Zod validation, framework integration, migration strategies"
        },
        "degrees_of_freedom": {
          "score": 5,
          "max": 5,
          "assessment": "Appropriate constraints; shows patterns without being overly prescriptive; templates customizable"
        },
        "feedback_loops": {
          "score": 3,
          "max": 4,
          "assessment": "validate-setup.sh script provides verification; Common Mistakes table helps self-correction"
        },
        "examples_and_templates": {
          "score": 3,
          "max": 3,
          "assessment": "Abundant working examples; tsconfig and eslint templates ready to use; input/output clear"
        }
      }
    }
  },
  "modifiers": {
    "penalties": [
      {
        "name": "xml_tags_in_metadata",
        "points": -5
      },
      {
        "name": "deeply_nested_references",
        "points": -2
      }
    ],
    "bonuses": [
      {
        "name": "copy_paste_checklists",
        "points": 2
      },
      {
        "name": "grep_friendly_structure",
        "points": 1
      },
      {
        "name": "exemplary_examples",
        "points": 2
      },
      {
        "name": "gerund_style_name",
        "points": 1
      }
    ],
    "net": -1
  },
  "final_score": 87,
  "grade": "B",
  "critical_issues": [
    {
      "rank": 1,
      "title": "Missing TOC in SKILL.md",
      "severity": "Low",
      "location": "SKILL.md:top",
      "pillar": "PDA",
      "problem": "SKILL.md is 442 lines but lacks a Table of Contents for navigation",
      "current": "No TOC at top of SKILL.md",
      "suggested": "Add ## Contents section after Quick Start listing all major sections with anchor links",
      "impact": "+1 points"
    },
    {
      "rank": 2,
      "title": "Second-person voice in some sections",
      "severity": "Low",
      "location": "SKILL.md:When to Use This Skill",
      "pillar": "Writing Style",
      "problem": "Uses 'Use when:' which is good, but some reference files use 'you' addressing",
      "current": "Various 'you' references in explanatory text",
      "suggested": "Rephrase to imperative form: 'Apply when building...' instead of 'Use when you are building...'",
      "impact": "+1 points"
    },
    {
      "rank": 3,
      "title": "Reference files vary in conciseness",
      "severity": "Low",
      "location": "references/*.md",
      "pillar": "Writing Style",
      "problem": "Some reference files have verbose explanations that could be more compact",
      "current": "enterprise-patterns.md includes lengthy code blocks with inline comments",
      "suggested": "Consolidate related patterns; remove obvious inline comments in code examples",
      "impact": "+1 points"
    }
  ],
  "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/mastering-typescript-skill](https://github.com/spillwavesolutions/mastering-typescript-skill/blob/main/SKILL.md)
- 🛒 **Marketplace:** [View on SkillzWave](https://skillzwave.ai/skill/spillwavesolutions__mastering-typescript-skill__mastering-typescript__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/mastering-typescript-skill

# Or from the SkillzWave marketplace
skilz install spillwavesolutions__mastering-typescript-skill__mastering-typescript
```

### Claude Code

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

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

### OpenCode

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

```bash

# OpenCode
skilz install https://github.com/spillwavesolutions/mastering-typescript-skill --agent opencode

```

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


# OpenAI Codex
skilz install https://github.com/spillwavesolutions/mastering-typescript-skill --agent codex

```

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


### Install from Skillzwave Marketplace
```bash
skilz install spillwavesolutions__mastering-typescript-skill__mastering-typescript --project
```

See this site [skill Listing](https://skillzwave.ai/skill/spillwavesolutions__mastering-typescript-skill__mastering-typescript__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__mastering-typescript-skill__mastering-typescript__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/mastering-typescript-skill](https://github.com/spillwavesolutions/mastering-typescript-skill/blob/main/SKILL.md)*

Pillar	Score	Max
Spec Compliance	13	15
Progressive Disclosure	27	30
Ease of Use	22	25
Writing Style	8	10
Utility	18	20
Modifiers	-1	±15

Pillar	Score	Max
Progressive Disclosure Architecture	27	30
Ease of Use	22	25
Spec Compliance	13	15
Writing Style	8	10
Utility	18	20
Modifiers	-1	±15

Criterion	Score	Max	Assessment
Token Economy	9	10	SKILL.md is dense with working code examples; minimal fluff; every section actionable
Layered Structure	9	10	Clear separation: SKILL.md overview with 6 deep-dive references plus assets and scripts
Reference Depth	5	5	All references exactly one level deep; clear Load when directives in each file
Navigation Signals	4	5	All reference files have TOC; SKILL.md at 442 lines could benefit from TOC

Criterion	Score	Max	Assessment
Metadata Quality	9	10	Comprehensive description with specific triggers; 14 trigger terms covering key use cases
Discoverability	5	6	Excellent trigger coverage: typescript, ts, nestjs, react, zod, satisfies, mapped types
Terminology Consistency	4	4	Consistent terminology throughout; uses satisfies, type guards, mapped types uniformly
Workflow Clarity	4	5	Quick Start with copy-paste commands; Project Setup Checklist; clear numbered steps

Criterion	Score	Max	Assessment
Frontmatter Validity	5	5	Valid YAML with required fields
Name Conventions	4	4	Correct hyphen-case format
Description Quality	3	4	Only 1-2 trigger phrases
Optional Fields	1	2	Uses license

Criterion	Score	Max	Assessment
Voice And Tense	3	4	Mostly imperative form; occasional second-person usage in explanations
Objectivity	3	3	Purely instructional; no marketing language; focuses on practical patterns
Conciseness	2	3	Good density overall but some sections could be trimmed; Common Mistakes table is efficient

Criterion	Score	Max	Assessment
Problem Solving Power	7	8	Addresses real gaps: type-safe patterns, Zod validation, framework integration, migration strategies
Degrees Of Freedom	5	5	Appropriate constraints; shows patterns without being overly prescriptive; templates customizable
Feedback Loops	3	4	validate-setup.sh script provides verification; Common Mistakes table helps self-correction
Examples And Templates	3	3	Abundant working examples; tsconfig and eslint templates ready to use; input/output clear

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: mastering-typescript - Score 87/100 (B) #1

Description

✅ Agent Skill Grading Report

Quick Summary of Agent Skill Grades

Pillar Scores for Agent Skill

Issues Found: 3

📊 Full Grading Report for Agent Skill

Skill Evaluation Report: mastering-typescript

Overall Score: 87/100

Executive Summary

Detailed Scores

Progressive Disclosure Architecture (27/30)

Ease of Use (22/25)

Spec Compliance (13/15)

Writing Style (8/10)

Utility (18/20)

Modifiers Applied (-1)

Critical Issues (Top 3)

Issue 1: Missing TOC in SKILL.md

Issue 2: Second-person voice in some sections

Issue 3: Reference files vary in conciseness

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