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agent-builder

Guide creation of Claude Code sub-agents with Anthropic frontmatter and prompt patterns.

1|Updated Feb 16, 2026
Search Tags:#skill development#prompt engineering#claude code#agent#builder
One-click install
npx skills add https://github.com/hunterbrewer04/claude-toolkit --skill agent-builder-hunterbrewer04
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: agent-builder
Source: https://github.com/hunterbrewer04/claude-toolkit/tree/main/skills/agent-builder
Command: npx skills add https://github.com/hunterbrewer04/claude-toolkit --skill agent-builder-hunterbrewer04

SYSTEM DOCUMENTATION & REQUIREMENTS

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

What problem does it solve?

This Skill streamlines the creation of Claude Code sub-agents, ensuring they adhere to best practices and are easily discoverable and usable by Claude.

Core Features & Use Cases

  • Guided Agent Creation: Walks users through defining an agent's purpose, frontmatter, system prompt, and installation.
  • Best Practice Enforcement: Provides guidance on naming conventions, description writing, and prompt structuring.
  • Use Case: You need to create a new agent to summarize code files. This Skill will guide you through defining its name, triggers, model, and writing an effective system prompt to ensure it performs the summarization task accurately.

Quick Start

Use the agent-builder skill to create a new agent that summarizes code.

Frequently Asked Questions about agent-builder

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

FAQPage Schema
How do I build Claude Code sub-agents that follow Anthropic patterns?▼

To build Claude Code sub-agents that follow Anthropic patterns, use a guided creation process to define the agent's purpose, frontmatter, system prompts, and installation scope, ensuring best practices for naming and discoverability.

What do I need to define when creating a new agent for Claude Code?▼

When creating a new agent for Claude Code, you need to define its purpose, trigger conditions, model selection, tool usage, and frontmatter, alongside writing an effective system prompt tailored to the specific task.

How do I install Claude Code agents for global and project-local scopes?▼

Installing Claude Code agents for global and project-local scopes involves following specific installation procedures during the agent creation workflow to ensure the sub-agent is discoverable and usable by Claude in the desired environment.

What's the best way to write system prompts for Claude Code sub-agents?▼

The best way to write system prompts for Claude Code sub-agents is to follow Anthropic patterns for prompt structuring, ensuring the prompt accurately defines the agent's purpose and guides its performance for tasks like code summarization.

Does this agent creation process enforce naming conventions and discoverability?▼

Yes, the agent creation process enforces best practice guidance on naming conventions and description writing to ensure the generated Claude Code sub-agents are easily discoverable and usable by Claude.

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