synthesis-mac-sync SKILL.md skillA
synthesis-mac-sync from synthesisengineering/synthesis-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add synthesisengineering/synthesis-skills/synthesis-mac-sync@v3.1.0Pins v3.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- synthesisengineering/synthesis-skills
- Path
skills/synthesis-mac-sync/SKILL.md- Versions recorded
- 4
- Latest version
- v3.1.0, committed Oct 20, 2026
- First version recorded
- Jul 29, 2026
- Size
- 6,177 bytes
- Repository stars
- 23
- License
- Apache-2.0
Keep several Macs in step: config files through iCloud, repositories and remotes through git, and work moved with synthesis handoff. Use for: mac sync, run my mac-sync, sync config, push or pull config to iCloud, sync repos, repo status, leaving this Mac.
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
# Synthesis Mac Sync A methodology for keeping multiple Macs in sync using iCloud for configuration files and Git for repositories, run end to end by the agent: the user says "run my mac-sync" and the agent does it with as few approval prompts as possible. This skill is the protocol; the user's config file in the iCloud sync folder is the specifics (which files, which machines, which repos). Moving work from one Mac to another uses `synthesis handoff` and the steps in [leaving-and-arriving.md](references/leaving-and-arriving.md), shared with `synthesis-machine-sync`. ## Binding rules 1. **Never overwrite with empty.** If either side is empty or missing, keep the non-empty one; copy the newer side automatically; prompt only when both changed and timestamps cannot decide. 2. **Verify iCloud propagation:** after every push wait for upload (`brctl monitor --wait-uploaded`); before every pull trigger downloads and poll until no `.icloud` placeholder remains. Never write a cross-Mac handoff before upload is confirmed; skipping this loses data. …
Read the whole file at its exact version.
How to install
mdr add synthesisengineering/synthesis-skills/synthesis-mac-sync@sha256:94b64d6fad161858The line at the top of this page pins the label v3.1.0, 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.
[](https://markdownregistry.com/a/art_4xm4qwtfkqyicbjg)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jul 29, 2026 and Oct 20, 2026, about one every 28 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v3.1.0 latest | 2026-10-20 | 2613d54 | 6,177 B | A | view · diff |
| v3.0.0 | 2026-10-06 | f6adc68 | 6,177 B | A | view · diff |
| v2.1.0 | 2026-08-14 | ca67c50 | 46,097 B | A | view · diff |
| v2.0.0 | 2026-07-29 | 9b134e7 | 45,019 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6177 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
synthesisengineering/synthesis-skills · 23 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4xm4qwtfkqyicbjg GET https://markdownregistry.com/api/v1/resolve?ref=synthesisengineering/synthesis-skills/synthesis-mac-sync GET https://markdownregistry.com/api/v1/blob/94b64d6fad161858d0c074d87c6e81e7b94d68be68b492cd1a5cdb4a0e9513cd
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.