ensuring-cross-platform SKILL.md skillA

ensuring-cross-platform from cristhianzl/claude-skills-czl is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add cristhianzl/claude-skills-czl/ensuring-cross-platform@git:20260619.c43368b

Pins git:20260619.c43368b in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
cristhianzl/claude-skills-czl
Path
configs/langflow/skills/ensuring-cross-platform/SKILL.md
Versions recorded
1
Latest version
git:20260619.c43368b, committed Jun 19, 2026
Size
9,686 bytes
Repository stars
5
License
MIT

Apply platform-agnostic engineering rules so Langflow code, tests, and Docker images behave identically on Ubuntu, macOS (Intel x86_64 + Apple Silicon arm64), and native Windows — plus the linux/amd64 + linux/arm64 Docker matrix and the separate Langflow Desktop distribution for Windows and macOS. Use when writing or reviewing code that touches the filesystem, shell, subprocess, encoding, time, paths, native dependencies, the cross-platform-test workflow, or Docker — or when the user mentions…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Ensuring Cross-Platform Behavior

A feature is not "done" because it works on the developer's machine. It is done when it produces identical, correct behavior on every supported platform — verified by tests that run on every supported platform.

This skill is the **single source of truth** for platform agnosticism. Other skills (`developing-features`, `developing-features-tdd`, `fixing-bugs`, `writing-tests`, `reviewing-code`, `documenting-features`) reference this one and apply its principles to their respective phases.

## Read first (always)

List `learnings/` and read every file relevant to the current task. Project-specific platform constraints, supported-OS lists, or known traps live there and override the defaults below. If a learning conflicts with this file, **the learning wins** — mention it to the user.

## Default supported platforms

Until the project says otherwise, assume the defensive case:

| Platform     | Architectures                  | Notes                                               |
|--------------|--------------------------------|-----------------------------------------------------|
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add cristhianzl/claude-skills-czl/ensuring-cross-platform@sha256:dde3513a1b89dd52

The line at the top of this page pins the label git:20260619.c43368b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_3ndteildjnhubn6b.svg)](https://markdownregistry.com/a/art_3ndteildjnhubn6b)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Jun 19, 2026.

versioncommittedcommitsizeaudit
git:20260619.c43368b latest2026-06-19 c43368b 9,686 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (9686 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

cristhianzl/claude-skills-czl · 5 stars · license MIT · pushed 2026-09-24 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_3ndteildjnhubn6b
GET https://markdownregistry.com/api/v1/resolve?ref=cristhianzl/claude-skills-czl/ensuring-cross-platform
GET https://markdownregistry.com/api/v1/blob/dde3513a1b89dd529aa9e107f52e08d8a3ad0e654f3c0821668d487f9978140e

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in cristhianzl/claude-skills-czl

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