AI-powered extension for Gemini CLI that creates custom agents through natural conversation

Agent Creator Extension for Gemini CLI

An AI-powered extension for Gemini CLI that makes creating custom agents effortless through natural conversation.

🎯 What It Does

This extension provides the /new-agent command that guides you through creating custom agent definitions using AI-assisted conversation. Instead of manually writing TOML files or filling out forms, you simply chat with the AI about what you want to build.

⚡ Quick Start

Installation

1. Clone this repository into your Gemini extensions directory:

   git clone https://github.com/jduncan-rva/gemini-agent-creator.git ~/.gemini/extensions/agent-creator
   

2. Restart Gemini CLI to load the extension

3. Verify installation:

   /extensions list
   

   You should see agent-creator in the list.

Usage

Quick Mode (AI Expands Your Idea)

Provide a brief description and let the AI flesh out a complete agent:

/new-agent "reviews code for security vulnerabilities"

The AI will:

1. Analyze your description
2. Generate a comprehensive agent definition with smart defaults
3. Show you the complete TOML configuration
4. Ask for your approval before saving

Example descriptions:

• "reviews python code for bugs"
• "generates API documentation"
• "writes unit tests for functions"
• "explains complex code in simple terms"
• "finds performance bottlenecks"

Interactive Mode (Guided Conversation)

Run without arguments for step-by-step guidance:

/new-agent

The AI will guide you through:

1. Defining what your agent does
2. Selecting which tools it needs
3. Writing its behavior and instructions
4. Defining input parameters
5. Reviewing the generated configuration
6. Saving to ~/.gemini/agents/

📝 Example Session

Quick Mode Example

> /new-agent "analyzes code for performance issues"

Great! I'll create a performance analysis agent for you.

Based on