How does Skillsmith integrate with the marketplace?

Once a skill is validated and improved, Skillsmith works with the marketplace-manager to sync version history and metadata to the central marketplace.json file.

What are the recommended size limits for a Claude Code skill?

Skillsmith targets a size of under 300 lines and 2,000 tokens, recommending that detailed documentation be moved to external reference files to maintain efficiency.

How do I evaluate my skill's performance?

You can use the included evaluate_skill.py script to generate scores (0–100) for metrics like conciseness, complexity, spec compliance, and description quality.

What is the primary purpose of Skillsmith?

Skillsmith automates the validation and iteration phases of Claude Code skill development, ensuring all extensions meet high-quality standards and technical specifications.

Can Skillsmith help me fix a skill that isn't working?

Yes, by running the evaluation script with the --explain flag, Skillsmith provides per-metric coaching and actionable steps to improve your skill's structure and performance.

Skillsmith

Name: Skillsmith
Author: totallyGreg

bytotallyGreg

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Developer Tools

Forge and optimize Claude Code skills through automated validation, performance metrics, and standardized improvement workflows.

Skillsmith is a specialized development utility designed to streamline the lifecycle of Claude Code skills. It handles the critical validation and iteration phases by providing automated tools to evaluate skill quality against key metrics like conciseness, complexity, and specification compliance. Whether you are initializing a new skill from a template or optimizing an existing one to fit within token limits, Skillsmith provides actionable coaching and automated updates to ensure your extensions are high-performing, well-documented, and ready for marketplace synchronization.

Key Features

01Actionable coaching feedback for improving complexity and conciseness

02Automated skill quality scoring across five core performance metrics

03Template-based initialization for standardized skill structures

041 GitHub stars

05Seamless integration with marketplace synchronization workflows

06Automated README.md generation with version history and metrics tracking

Use Cases

01Maintaining a rigorous version history and quality audit trail for complex plugins

02Optimizing large skill files to improve performance by offloading content to reference files

03Validating new Claude Code skills for specification compliance before deployment

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add totallygreg/claude-mp skillsmith

For use in Claude.ai and ChatGPT