Extensions Overview

server.registerTool(
  'fetch_posts',
  {
    description: 'Fetches posts from API',
    inputSchema: z.object({}).shape,
  },
  async () => {
    const response = await fetch('https://api.example.com/posts');
    return { content: [{ type: 'text', text: JSON.stringify(await response.json()) }] };
  }
);

# commands/fs/grep-code.toml
prompt = """
Please summarize the findings for the pattern `{{args}}`.

Search Results:
!{grep -r {{args}} .}
"""

# My Extension Instructions

You are an expert developer assistant specializing in Python.
When analyzing code:
1. Check for PEP 8 compliance
2. Suggest type hints where missing
3. Recommend modern Python idioms

{
  "contextFileName": "GEMINI.md"
}

---
name: security-audit
description: Expertise in auditing code for security vulnerabilities
---

# Security Auditor

When auditing code:
1. Look for common vulnerabilities (OWASP Top 10)
2. Check for hardcoded secrets or API keys
3. Suggest remediation steps for any findings

export default {
  beforeToolCall: async (toolName, params) => {
    console.log(`Executing ${toolName}`);
    // Validate, modify, or block the tool call
    return params;
  },
  afterToolCall: async (toolName, result) => {
    console.log(`Completed ${toolName}`);
    return result;
  }
};

{
  "themes": {
    "myTheme": {
      "primary": "#00ff00",
      "secondary": "#0000ff",
      "background": "#1e1e1e",
      "text": "#ffffff"
    }
  }
}