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.