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skill-builder

Build a Claude skill, then prove it works.

Skill by charlie-fuller

IndexedLicense unknown★ 1
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/motorthings-skill-builder

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Build a Claude skill, then prove it works. Use when the user says "build me a skill", "make a skill for...", "I want a slash command that...", "create a skill to...", or "help me write a skill". Opens by offering two paths and naming which a beginner should pick — Quick (a question or two, the default) or Detailed (a longer interview for complex or high-stakes skills). Works for both Claude Code skills (SKILL.md) and Claude.ai project skills (system prompt); generates the skill with named anti-patterns; then writes its eval suite — test cases derived from the skill's own directives and traced to the lines they came from — validates it, and runs it against a no-skill baseline to report what the skill actually contributes. Every skill it produces ships measured.

Use cases: documents, testing, writing, agent-building

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found
Runs as
Python package

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/skill-builder

What's inside

Skill name
skill-builder
Description
Build a Claude skill, then prove it works. Use when the user says "build me a skill", "make a skill for...", "I want a slash command that...", "create a skill to...", or "help me write a skill". Opens by offering two paths and naming which a beginner should pick — Quick (a question or two, the default) or Detailed (a longer interview for complex or high-stakes skills). Works for both Claude Code skills (SKILL.md) and Claude.ai project skills (system prompt); generates the skill with named anti-patterns; then writes its eval suite — test cases derived from the skill's own directives and traced to the lines they came from — validates it, and runs it against a no-skill baseline to report what the skill actually contributes. Every skill it produces ships measured.
License
unknown
Metadata
author: charlie-fuller · version: 3.1.0
Instructions
547 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Agent Skills spec issues

  • body: 547 lines (spec recommends under 500)
  • files: referenced but missing: scripts/aggregate_benchmark.py, references/schemas.md

Files (26)

  • .gitignore
  • README.md
  • SKILL.md
  • PLAN.md · evals/
  • evals.extended.json · evals/
  • evals.json · evals/
  • assertions.md · references/
  • brevity.md · references/
  • conditions.md · references/
  • environment.md · references/
  • eval-procedure.md · references/
  • extraction.md · references/
  • personas.md · references/
  • process-tuning.md · references/
  • roles.md · references/
  • safety.md · references/
  • check_skill.py · scripts/
  • patch-skill-creator.py · scripts/
  • render_plan.py · scripts/
  • validate_evals.py · scripts/
  • SKILL.md · tests/fixtures/
  • valid_suite.json · tests/fixtures/
  • test_check_skill.py · tests/
  • test_tooling.py · tests/
  • test_validate_evals.py · tests/
  • test_wiring.py · tests/

The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub

More from motorthings/clode

Signals

Stars
1
Forks
0
Open issues
0
Last commit (this folder)
Oct 13, 2026 (16 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Version
3.1.0
License
License unknown
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

More from charlie-fuller

Cite this page

skill-builder. Agent Mart. https://agentmart.dev/skills/motorthings-skill-builder (last updated 2026-10-24)