What is vibe-cross-platform?

Cross-platform coding rules for Mistral Vibe, a program that runs on Linux, macOS, and Windows. They explain how to handle file paths, shells, terminal output, and platform-specific behavior when tests run mainly on Linux.

Use them when adding platform-specific logic, handling Windows support, composing paths, processing terminal streams, or writing tests for different operating systems.

They prevent code from working only on the developer's computer or relying on one operating system's shell and path rules. They also address terminal data that may arrive in incomplete pieces.

How mistralai/mistral-vibe configures Claude Code and Codex

About the project

Mistral Vibe is a command-line coding assistant that lets users converse with a codebase and use natural language to explore or change projects. Developers use it for file editing, code searching, version-control tasks, and shell commands through Mistral’s models. Its catalogue add-ons provide skills and instructions for customizing the assistant’s workflows.

mistralai/mistral-vibe · 4,933 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to mistralai/mistral-vibe. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/mistralai/mistral-vibe/main/.agents/skills/vibe-cross-platform/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/mistralai/mistral-vibe

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/mistralai/mistral-vibe/vibe-cross-platform/github.svg)](https://agentmods.dev/skills/mistralai/mistral-vibe/vibe-cross-platform)

Your own site

<a href="https://agentmods.dev/skills/mistralai/mistral-vibe/vibe-cross-platform"><img src="https://agentmods.dev/badge/skills/mistralai/mistral-vibe/vibe-cross-platform/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/mistralai/mistral-vibe/vibe-cross-platform"><img src="https://agentmods.dev/badge/skills/mistralai/mistral-vibe/vibe-cross-platform.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 502 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00043	$0.00502
Opus 5	$0.00022	$0.00251
Sonnet 5	$0.00009	$0.00100
Haiku 4.5	$0.00004	$0.00050

Measured 11d ago against content hash 86cdaf83588e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

vibe-cross-platform 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 11d 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.

.agents/skills/vibe-cross-platform/SKILL.md · 28 lines

What it actually says

Vibe Cross-Platform

Vibe ships on Linux, macOS, and Windows, but CI runs the test suite on Linux only. The machine you develop on is not the machine that gates the PR — code and tests must pass on every platform, and must be provably correct on the platforms CI cannot exercise.

Code rules

Never rely on host-specific behavior (shell, path separator, line ending, available binaries, $SHELL, case sensitivity). Assume the same code runs under cmd.exe, Git Bash, zsh, and sh.
Branch platform-specific logic behind the helpers in vibe.core.utils.platform (is_windows(), resolve_windows_shell()), not ad-hoc sys.platform checks. Keep POSIX-only assumptions (forward slashes, POSIX shlex escaping, $SHELL) out of shared paths and scope Windows-only handling to is_windows().
Use pathlib.Path for path composition; never hardcode / or \\.

Terminal data

Treat terminal and PTY data as arbitrarily chunked streams: normalize CRLF before interpreting lone \r as an in-place redraw, buffer incomplete control sequences until their terminator arrives, and add Linux-runnable regression tests covering CRLF plus every split boundary of representative control sequences.

Testing

Test other-platform code paths on Linux by monkeypatching sys.platform, env vars, and probes like shutil.which — do not @pytest.mark.skipif them away. A Windows-only behavior with no Linux-runnable test is untested in CI.
When an assertion depends on the platform, force it explicitly (e.g. monkeypatch.setattr(module, "is_windows", lambda: True)) instead of letting the test pass only because of the host it happened to run on. A test that would flip its result on a different OS is a bug.

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.

11d ago First seen · 28 lines · 43 tokens per session scan A 86cdaf83588e

Subscribe to this mod's changes

vibe-cross-platform is a skill published in the GitHub repository mistralai/mistral-vibe (4,933 stars, last pushed today), licensed Apache-2.0. It adds 43 tokens to every session and 502 once invoked, about $0.0002 per session on Opus 5. 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 2026-08-30.

Languages

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Guide for writing ast-grep rules to perform structural code search and analysis. Use when users need to search codebases using Abstract Syntax Tree (AST) patterns, find specific code structures, or perform complex code queries that go beyond simple text search. This skill should be used when users ask to search for…

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mistral-vibe: Skill for Claude Code