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Harness Sync

Category: General  ·  Sub-category: general-misc  ·  Last updated:
Use when user invokes /harness-sync or wants to sync AI tool configurations across Claude Code, Cursor, and GitHub Copilot. Inventories installed skills, instruction blocks, and MCP configs on all detected platforms, reports divergence, and lets the user push or pull changes. Push path reuses harness-compile logic. Pull path updates harness.yaml and recompiles. Never overwrites without explicit confirmation.
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From the source SKILL.md

You are syncing AI tool configurations across Claude Code, Cursor, and GitHub Copilot. You will inventory what is installed and configured on each platform, report any divergence, and execute the sync direction the user chooses.

What this skill does

Harness Sync is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/harness-sync/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when user invokes /harness-sync or wants to sync AI tool configurations across Claude Code, Cursor, and GitHub Copilot. Inventories installed skills, instruction blocks, and MCP configs on all detected platforms, reports divergence, and lets the user push or pull changes.

Who uses this skill

The Harness Sync Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/harness-sync
curl -L https://claudskills.com/skills/harness-sync/SKILL.md \
  -o ~/.claude/skills/harness-sync/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/harness-sync/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/harness-sync/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\harness-sync\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Harness Sync Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/harness-sync/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Harness Sync skill do?
Use when user invokes /harness-sync or wants to sync AI tool configurations across Claude Code, Cursor, and GitHub Copilot. Inventories installed skills, instruction blocks, and MCP configs on all detected platforms, reports divergence, and lets the user push or pull changes. Push path reuses harness-compile logic. Pull path updates harness.yaml and recompiles. Never overwrites without explicit confirmation.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Harness Sync skill?
Use Harness Sync when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Harness Sync" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the Harness Sync skill fit in?
A Claude Code skill is a 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. Harness Sync is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
harnessprotocol. (2026). Harness Sync [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/harness-sync/
BibTeX
@misc{harness-sync-2026,
  author    = {harnessprotocol},
  title     = {Harness Sync [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/harness-sync/}
}

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Security scan

Grade A · scanned 2026-07-06 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

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Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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