Agent Creator Skill

Agent Creator Skill

Purpose

This skill acts as an expert agent architect, generating complete, ready-to-use Claude Code sub-agent configuration files from user descriptions. It gathers requirements through structured questions, fetches current documentation, and produces well-structured agent definitions.

Workflow

Step 1: Gather Requirements

Before creating any agent, use AskUserQuestion to collect essential information:

Question 1: "What is the primary purpose or goal of this agent?"
Header: "Agent Goal"
Options:
- Code analysis/​review
- Code generation/​writing
- Documentation tasks
- Testing/​debugging
- Other (free text)

Question 2: "What domain should this agent be an expert in?"
Header: "Expertise"
Options:
- Frontend development
- Backend development
- DevOps/​Infrastructure
- Data/​Analytics
- Other (free text)

Question 3: "What tools should this agent have access to?"
Header: "Tools"
MultiSelect: true
Options:
- Read, Grep, Glob (code exploration)
- Edit, Write (code modification)
- Bash (command execution)
- WebFetch (documentation/​research)

Step 2: Fetch Documentation

Retrieve up-to-date sub-agent documentation:

WebFetch: https://code.claude.com/​docs/​en/​sub-agents
Prompt: "Extract the sub-agent configuration format, available frontmatter fields, and best practices for creating agents"

Step 3: Analyze and Design

Based on gathered requirements:

1. Devise a name: Create a concise, descriptive kebab-case name (e.g., api-tester, dependency-manager)
2. Select a color: Choose from: red, blue, green, yellow, purple, orange, pink, cyan
3. Write delegation description: Craft an action-oriented description stating when to use the agent. Include trigger phrases for when users should invoke it. Example: "Use proactively when user says 'review my code' or 'check for bugs'. Specialist for code quality assessment."
4. Fetch tools available: Use WebFetch to get the current list of available tools from Claude Code documentation, as tools may change over time
5. Determine tools needed: Based on the agent's purpose and the available tools, select the minimal tool set required for the agent's tasks

Step 4: Construct the Agent File

Generate a complete markdown file following the template in references/​agent-template.md.

Step 5: Write the Agent File

Save the generated agent to: ~/​.claude/​agents/<generated-agent-name>.md

Use the Write tool to create the file at the correct location.

Best Practices

• Keep descriptions action-oriented and specific about when the agent should be used
• Include "Use proactively when..." in descriptions for automatic delegation
• Minimize tool access to only what's necessary for the agent's purpose
• Write clear, numbered instructions that guide the agent step-by-step
• Include domain-specific best practices relevant to the agent's expertise
• Define expected output format clearly

Additional Resources

Reference Files

• references/​agent-template.md - Complete agent file template with all sections