harness-sync SKILL.md skillA

harness-sync from harnessprotocol/harness-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add harnessprotocol/harness-kit/harness-sync@git:20260727.387edcf

Pins git:20260727.387edcf in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
harnessprotocol/harness-kit
Path
plugins/harness-share/skills/harness-sync/SKILL.md
Versions recorded
2
Latest version
git:20260727.387edcf, committed Jul 27, 2026
First version recorded
Mar 13, 2026
Size
18,054 bytes
Repository stars
10
License
Apache-2.0

Use when user invokes /harness-sync or wants to sync AI tool configurations across any of the 8 supported targets (Claude Code, Cursor, GitHub Copilot, Codex, OpenCode, Windsurf, Gemini CLI, Junie). 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.

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

# Sync Harness Configurations Across Platforms

You are syncing AI tool configurations across any combination of the 8 supported targets: Claude Code, Cursor, GitHub Copilot, Codex, OpenCode, Windsurf, Gemini CLI, and Junie. You will inventory what is installed and configured on each platform, report any divergence, and execute the sync direction the user chooses.

This skill depends on harness-compile: the push path reuses harness-compile's compilation logic to write the selected source platform's content to all target platforms.

## Workflow Order (MANDATORY)

**Follow these steps in order. Do not skip any step.**

---

### Step 1: Detect platforms

Check for any `--target <platform>` flag the user passed. If present, restrict the entire workflow to that platform only. Valid values: `claude-code`, `cursor`, `copilot`, `codex`, `opencode`, `windsurf`, `gemini`, `junie`. For sync, `--target <platform>` means "treat this platform as the only target for push output." It does not restrict which platforms are scanned in Step 2 — all detected platforms are still inventoried so divergence can be identified.

Otherwise, scan the working directory for platform indicators:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add harnessprotocol/harness-kit/harness-sync@sha256:3f931cedbdfc74e2

The line at the top of this page pins the label git:20260727.387edcf, 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_pr7wrtutqeqtytoo.svg)](https://markdownregistry.com/a/art_pr7wrtutqeqtytoo)

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

Versions

The registry has recorded 2 versions of this file, between Mar 13, 2026 and Jul 27, 2026, about one every 136 days.

versioncommittedcommitsizeaudit
git:20260727.387edcf latest2026-07-27 387edcf 18,054 BA view · diff
git:20260313.da677362026-03-13 da67736 14,884 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 (18054 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

harnessprotocol/harness-kit · 10 stars · license Apache-2.0 · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_pr7wrtutqeqtytoo
GET https://markdownregistry.com/api/v1/resolve?ref=harnessprotocol/harness-kit/harness-sync
GET https://markdownregistry.com/api/v1/blob/3f931cedbdfc74e29b994697bc23628e0bf673e481b9d62744ceb3ad53088586

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 harnessprotocol/harness-kit

Other files named harness-sync

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