fact-checker

Verifies factual claims in documents using web search and official sources, then proposes corrections with user confirmation. Use when the user asks to fact-check, verify information, validate claims, check accuracy, or update outdated information in documents. Supports AI model specs, technical documentation, statistics, and general factual statements

Claude Code Skills Marketplace

Professional Claude Code skills marketplace featuring 53 production-ready skills for enhanced development workflows.

🌟 Essential Skill: skill-creator

⭐ Start here if you want to create your own skills!

The skill-creator is the meta-skill that enables you to build, validate, and package your own Claude Code skills. It's the most important tool in this marketplace because it empowers you to extend Claude Code with your own specialized workflows.

Why This skill-creator?

This is a production-hardened fork of Anthropic's official skill-creator, born from building real skills and hitting every wall the official version doesn't warn you about.

The official skill-creator tells you what to build. Ours also tells you what not to try — and why.

You're trying to...	Official	This Fork
Research before building	"Check available MCPs" (5 lines)	8-channel search protocol with decision matrix: Adopt / Extend / Build
Create a skill interactively	Prose-based instructions	9 structured AskUserQuestion checkpoints — user never loses context
Avoid common mistakes	No guidance	Cache edit warnings, prerequisite checks, security scan gate
Know the architecture options	Not mentioned	Inline vs Fork decision guide with examples (choosing wrong silently breaks your skill)
Validate before shipping	Basic YAML check	Expanded validator (all frontmatter fields, path reference integrity, whitespace issues)
Catch security issues	No tooling	`security_scan.py` with gitleaks integration — hard gate before packaging
Learn from real failures	No failure cases	Battle-tested methodology with documented failure patterns and gotchas

Quality comparison (independent audit, 8 dimensions):

Dimension	Official	This Fork
Actionability	7	9
Error Prevention	5	9
Prior Art Research	4	9
Counter Review Process	4	8
Real-World Lessons	3	8
User Experience	4	9
Total (out of 80)	42	65

Full methodology: skill-creator/references/skill-development-methodology.md

Quick Install

In Claude Code (in-app):

/plugin marketplace add daymade/claude-code-skills

Then:

Select Browse and install plugins
Select daymade/claude-code-skills
Select skill-creator
Select Install now

From your terminal (CLI):

claude plugin marketplace add https://github.com/daymade/claude-code-skills
# Marketplace name: daymade-skills (from marketplace.json)
claude plugin install skill-creator@daymade-skills

What You Can Do

After installing skill-creator, simply ask Claude Code:

"Create a new skill called my-awesome-skill in ~/my-skills"

"Validate my skill at ~/my-skills/my-awesome-skill"

"Package my skill at ~/my-skills/my-awesome-skill for distribution"

Claude Code, with skill-creator loaded, will guide you through the entire skill creation process - from understanding your requirements to packaging the final skill.

📚 Full documentation: daymade-skill/skill-creator/SKILL.md

Live Demos

📝 Initialize New Skill

Initialize Skill Demo

✅ Validate Skill Structure

Validate Skill Demo

fact-checker

Popularity

What's Inside

README

Claude Code Skills Marketplace

📑 Table of Contents

🌟 Essential Skill: skill-creator

Why This skill-creator?

Quick Install

What You Can Do

Live Demos

Confidence

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