What is the token limit for skills created with this tool?

Skill Builder enforces a core token budget of under 5,000 tokens to ensure the skill remains performant and doesn't exhaust Claude's context window.

Does it follow official Anthropic documentation?

Absolutely. It integrates best practices from the official Claude Code documentation, the Agent SDK, and the Anthropic Agent Skills engineering blog.

How does Skill Builder automate skill creation?

It uses a sequence of specialized agents—Prompt Writer, Architect, Builder, Reviewer, and Tester—to move from an initial idea to a validated, testable SKILL.md file.

How do I activate the Skill Builder?

It activates automatically when you use natural language prompts like 'create a skill' or 'design a new agent', or it can be explicitly invoked via the /amplihack:skill-builder command.

Can I use it to create custom slash commands?

Yes, it specifically supports the 'command' type, helping you design and implement slash commands stored in your local amplihack directory.

Skill Builder for Claude Code

Name: Skill Builder for Claude Code
Author: rysweet

byrysweet

•

開発者ツール

Streamlines the creation, refinement, and validation of production-ready Claude Code skills using official Anthropic best practices.

Skill Builder is a specialized orchestration utility designed to automate the end-to-end development of custom Claude Code skills. By leveraging a multi-agent workflow (Clarify, Design, Build, Validate, and Test), it ensures that every skill created follows the 'amplihack' philosophy of ruthless simplicity and adheres to strict token budgets. Whether you are developing specialized agents, slash commands, or complex production scenarios, this tool handles the heavy lifting of YAML frontmatter generation, progressive disclosure documentation, and activation testing to ensure high-quality discovery and performance.

主な機能

01Support for specialized agents, slash commands, and production tools

02Rigorous quality validation including token budget checks (<5,000 tokens)

03Automated SKILL.md generation with validated YAML frontmatter

04Multi-agent orchestration for requirement gathering and architectural design

0516 GitHub stars

06Automated test case generation for activation and edge case validation

ユースケース

01Standardizing custom slash commands across a development team

02Rapidly prototyping domain-specific agents for specialized coding environments

03Ensuring existing Claude Code skills meet official Anthropic performance best practices

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add rysweet/amplihack skill-builder

For use in Claude.ai and ChatGPT

Download Skill