fal3/claude-skills-collection · skills/cross-platform-app-development-skill/SKILL.md

Cross-Platform App Development Skill skillA

Cross-Platform App Development Skill is agent-read markdown (skill) from fal3/claude-skills-collection: Use when one Swift/SwiftUI product intentionally targets two or more of iOS, iPadOS, Mac Catalyst, macOS, watchOS, tvOS, or visionOS and needs shared-domain design, adaptive UI, capability boundaries, navigation, input, scenes, storage, or conditional compilation. Do not use for a single-platform feature or for non-Apple cross-platform frameworks..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add fal3/claude-skills-collection/Cross-Platform App Development Skill@git:20260814.a9c26d7
Exact content
mdr add fal3/claude-skills-collection/Cross-Platform App Development Skill@sha256:e3cee1142955354e

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_rqat4mdk2bdbgxdh.svg)](https://markdownregistry.com/a/art_rqat4mdk2bdbgxdh)

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Versions

versioncommittedcommitsizeaudit
git:20260814.a9c26d7 latest2026-08-14 a9c26d7 7,877 BA view · diff
v12025-10-22 4c2260c 11,461 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (7877 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

fal3/claude-skills-collection · 16 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rqat4mdk2bdbgxdh
GET https://markdownregistry.com/api/v1/resolve?ref=fal3/claude-skills-collection/Cross-Platform App Development Skill
GET https://markdownregistry.com/api/v1/blob/e3cee1142955354e994119c0701300e0f1450e801ae8026c207b8f9801c00828

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.