skill-builder

Guide developers in creating Anthropic Agent Skills with SKILL.md YAML frontmatter.

Updated Mar 8, 2026
One-click install
npx skills add https://github.com/ankitjh4/skill-builder --skill skill-builder-ankitjh4
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: skill-builder
Source: https://github.com/ankitjh4/skill-builder/tree/main/skill-builder
Command: npx skills add https://github.com/ankitjh4/skill-builder --skill skill-builder-ankitjh4

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) and scripts (resource) components.

What problem does it solve?

Skill creation becomes slow and inconsistent when you lack a repeatable process for planning, writing Anthropic Agent Skills, validating triggers, and iterating to quality.

Core Features & Use Cases

  • End-to-end skill development guidance: Plan use cases, define success criteria, and implement a high-quality SKILL.md structure aligned with Agent Skills expectations.
  • Trigger-accuracy and iteration workflow: Improve under-triggering or over-triggering using targeted evaluation prompts and feedback-driven refinement.
  • Operational correctness for portability: Ensure skills follow conventions like kebab-case folder naming, required YAML frontmatter fields, and progressive disclosure so the skill works across Claude surfaces.

Use Case Example: You want to create a new skill that turns a user’s project requirements into a structured plan and reusable deliverables, and you need a reliable method to write the right description triggers, instructions, and testing loop.

Quick Start

Use the skill-builder skill when you are asked to create a new skill or improve an existing one so you can generate a correct SKILL.md with proper triggers, instructions, and an iteration plan.

Frequently Asked Questions about skill-builder

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create an Anthropic Agent Skill with correct YAML frontmatter?

To create an Agent Skill, define a SKILL.md entry point with mandatory YAML frontmatter fields, use kebab-case folder naming, and write actionable operational instructions to ensure proper skill discovery.

What is the best way to fix under-triggering or over-triggering in Claude skills?

Fix skill trigger evaluation issues by applying targeted evaluation prompts and feedback-driven iteration testing to refine your SKILL.md description and improve trigger accuracy.

How do I structure optional components like scripts and references for agentic workflows?

Structure optional components like scripts and references by applying progressive disclosure formatting within your SKILL.md to maintain operational correctness and portability across Claude surfaces.

Do I need kebab-case naming for my SKILL.md file to ensure skill discovery?

Yes, kebab-case folder naming is a mandatory convention for skill discovery, alongside a required SKILL.md entry point containing the correct name and description in the YAML frontmatter.

Why does my Claude skill not trigger correctly across different surfaces?

Your skill may not trigger correctly due to missing mandatory YAML frontmatter fields, improper kebab-case naming, or a lack of progressive disclosure formatting required for cross-surface portability.