The cloud companion is a small always-on VM the user owns. It receives the Mac's data repo over git-smart-HTTP, serves the phone over HTTPS from anywhere, and relays live session traffic. Setting one up means: provision a VM → point a hostname at it → wait for first boot → claim it → verify sync.
Walnut Setup Cloud Companion is a community-contributed Claude Code skill in the tools-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/walnut-setup-cloud-companion/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when the user says "set up my cloud companion", "I want to reach Walnut from my phone anywhere / away from home", "set up cloud sync", "deploy the cloud box", or asks why their phone only works on the home network.
The Walnut Setup Cloud Companion Claude Code skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 213,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/walnut-setup-cloud-companion curl -L https://claudskills.com/skills/walnut-setup-cloud-companion/SKILL.md \ -o ~/.claude/skills/walnut-setup-cloud-companion/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/walnut-setup-cloud-companion/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/walnut-setup-cloud-companion/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\walnut-setup-cloud-companion\SKILL.md on Windows. See the full install guide for step-by-step instructions.
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SKILL.md from the source repository to ~/.claude/skills/walnut-setup-cloud-companion/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Walnut Setup Cloud Companion is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{walnut-setup-cloud-companion-2026,
author = {EvanZhang008},
title = {Walnut Setup Cloud Companion [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/walnut-setup-cloud-companion/}
}Grade A · scanned 2026-11-01 — free static scan against the OWASP Agentic Skills Top 10.
The scan flagged 1 of 10 categories (network), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.
Browse all Dev Tools skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.