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docs(license): switch repo to PolyForm Perimeter

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Clarify that the skills can be used in closed-source workflows while prohibiting repackaging them as a competing product. Also add attribution language for referenced Apple materials.
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Derek Pearson
2026-03-12 17:09:00 -04:00
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Required Notice: Copyright (c) 2025 dpearson2699 (https://github.com/dpearson2699)
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
<https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
# PolyForm Perimeter License 1.0.0
Preamble
<https://polyformproject.org/licenses/perimeter/1.0.0>
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How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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You should have received a copy of the GNU General Public License along
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Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
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Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
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The hypothetical commands `show w' and `show c' should show the appropriate
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You should also get your employer (if you work as a programmer) or your
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necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Moe Ghoul>, 1 April 1989
Moe Ghoul, President of Vice
This General Public License does not permit incorporating your program into
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consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.
**Use** means anything you do with the software requiring one
of your licenses.
README.md
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# Swift iOS Skills — Agent Skills for iOS 26+ & SwiftUI Development
[![License: GPLv2](https://img.shields.io/badge/License-GPLv2-blue.svg)](LICENSE)
[![License: PolyForm Perimeter](https://img.shields.io/badge/License-PolyForm%20Perimeter%201.0.0-blue.svg)](LICENSE)
[![GitHub stars](https://img.shields.io/github/stars/dpearson2699/swift-ios-skills)](https://github.com/dpearson2699/swift-ios-skills/stargazers)
[![Swift 6.2](https://img.shields.io/badge/Swift-6.2-F05138.svg)](https://swift.org)
[![Platform](https://img.shields.io/badge/Platform-iOS%20%7C%20macOS-000000.svg?logo=apple)](https://developer.apple.com)
@@ -205,6 +205,8 @@ skills/
`SKILL.md` contains YAML frontmatter (`name`, `description`) and markdown instructions. The `references/` folder holds longer examples, advanced patterns, and lookup tables that the main file points to.
This repository contains original instructional content and examples for Apple platform development. Where Apple frameworks, APIs, documentation, WWDC sessions, or trademarks are referenced, those materials remain the property of Apple Inc. The license for this repository applies to this project's original content only and does not claim ownership of or relicense Apple's documentation, trademarks, sample code, or other third-party materials.
## Compatibility
These skills work with any agent that supports the [Agent Skills standard](https://agentskills.io), including:
@@ -237,4 +239,14 @@ To upgrade Claude Code bundles, reinstall the bundles you use (old bundle names
## License
GPLv2 -- see [LICENSE](LICENSE)
[PolyForm Perimeter 1.0.0](https://polyformproject.org/licenses/perimeter/1.0.0/) -- see [LICENSE](LICENSE)
**What this means in practice:**
- Using these skills to build your iOS app -- allowed
- Using these skills inside a closed-source commercial workflow -- allowed
- Forking the repo and contributing back -- allowed
- Sharing the skills with a teammate -- allowed
- Taking the skills, rebranding them as "Premium iOS Agent Skills," and selling them -- not allowed (that's a competing product)
This project is not affiliated with, endorsed by, or sponsored by Apple Inc.