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fen-extension-author

Write, review, and debug Fen extensions with the Fen API.

Updated Apr 26, 2026
Search Tags:#debugging#ai tools#programming#extension development#fen
One-click install
npx skills add https://github.com/acmiyaguchi/fen --skill fen-extension-author
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: fen-extension-author
Source: https://github.com/acmiyaguchi/fen/tree/main/extensions/behaviors/companions/skills/bundled/fen-extension-author
Command: npx skills add https://github.com/acmiyaguchi/fen --skill fen-extension-author

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

Fen Extension Author Skill provides a platform to write, review, or debug Fen extensions.

Core Features & Use Cases

  • Fen Extension Development: Offers an environment for creating, editing, and debugging Fen extensions.
  • Project & User Extensions: Support for both project-local and user-global Fen extensions.
  • Documentation & Guidance: Includes references and guidelines on the Fen extension contract, tools, and development workflow.
  • Performance & Safety: Encourages best practices for reload, state, and API boundary handling to ensure efficient and secure extensions.
  • Testing & Iteration: Provides commands for testing and iteration within Fen's interactive environment.

Quick Start

Enter fen extension author --help to begin writing Fen extensions.

Frequently Asked Questions about fen-extension-author

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

FAQPage Schema
How do I write and debug extensions for the Fen AI platform?▼

To debug Fen extensions, use a dedicated development framework that helps you manage state, handle API boundaries, and follow reload rules for efficient and secure code.

Can I create both project-local and user-global Fen extensions?▼

Yes, Fen extension development supports both project-local and user-global extensions, allowing you to scope functionality modifications to specific projects or across your entire environment.

What are the best practices for Fen extension state management and reload rules?▼

Best practices for Fen extension state management involve following provided guidelines on reload rules, performance considerations, and API boundary handling to ensure safe and efficient execution.

Does Fen extension development provide tools for testing and iteration?▼

Fen extension development provides specific commands for testing and iteration within Fen's interactive environment, allowing you to safely review and debug your extension code.

Where can I find documentation on the Fen extension contract and development workflow?▼

Documentation for the Fen extension contract, tools, and development workflow is included directly within the framework, offering references and guidelines to help you build extensions correctly.

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