xplat

xplat is a command for Claude Code from dansasser/claude-code-marketplace. It costs 0 tokens per session (307 once invoked), scanned A, original, MIT.

A quick command that checks a project for common Windows-and-Linux compatibility problems, such as path formats, environment variables, temporary paths, line endings, file-name casing, and shell commands.

In plain words
What is it for?
Use it before sharing or releasing code to find specific cross-platform problems and suggested fixes.
Why use it?
It gives a fast pass-or-fail result for portability issues without running the complete quality pipeline or changing its recorded state.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the preflight plugin — 2 skills, 8 commands, 11 agents shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/dansasser/claude-code-marketplace/xplat
Clone the repo
git clone --depth 1 https://github.com/dansasser/claude-code-marketplace

Made for: Claude Code.

Or install preflight, the plugin that ships this one along with the rest of its 2 skills, 8 commands, 11 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for xplat

README.md
[![agentmods](https://agentmods.dev/badge/commands/dansasser/claude-code-marketplace/xplat.svg)](https://agentmods.dev/commands/dansasser/claude-code-marketplace/xplat)
Your own site
<a href="https://agentmods.dev/commands/dansasser/claude-code-marketplace/xplat"><img src="https://agentmods.dev/badge/commands/dansasser/claude-code-marketplace/xplat.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 307 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00307
Opus 5 $0.00000 $0.00153
Sonnet 5 $0.00000 $0.00061
Haiku 4.5 $0.00000 $0.00031

Measured 5d ago against content hash 8fca546a0c85, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

xplat scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/preflight/commands/xplat.md · 66 lines

What it actually says

Quick cross-platform compatibility check.

Purpose

Run just the cross-platform checks without the full pipeline.

Process

Check for common cross-platform issues:

  • Hardcoded path separators (/ or )
  • Platform-specific environment variables
  • Hardcoded temp paths
  • Shell command compatibility
  • Line ending issues
  • Case sensitivity problems

Usage

/xplat

Output

CROSS-PLATFORM CHECK

Paths:           OK
Line endings:    OK
Env vars:        OK
Case sensitivity: OK
Shell commands:  OK
Temp paths:      OK

Status: PASS - No cross-platform issues found

Or on failure:

CROSS-PLATFORM CHECK

Issues found: 3

1. src/config.py:47 [env_vars]
   Code: home = os.environ['HOME']
   Fix: Use Path.home()

2. src/utils.py:23 [paths]
   Code: path = 'data/config.yaml'
   Fix: Use Path('data') / 'config.yaml'

3. tests/test_io.py:89 [temp_paths]
   Code: tmp = '/tmp/test.txt'
   Fix: Use Path(tempfile.gettempdir()) / 'test.txt'

Status: FAIL - 3 issues need fixing

Note

This is a quick check - it does NOT update pipeline state. For full pipeline with state tracking, use /preflight or /gate 3.

Use the cross-platform agent for this check.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 66 lines · 0 tokens per session scan A 8fca546a0c85

Subscribe to this mod's changes

xplat is a command published in the GitHub repository dansasser/claude-code-marketplace (9 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 307 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.