mastering-prep SKILL.md skillA

mastering-prep from glincker/ableton-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add glincker/ableton-skills/mastering-prep@git:20260427.d8961b6

Pins git:20260427.d8961b6 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
glincker/ableton-skills
Path
skills/mastering-prep/SKILL.md
Versions recorded
1
Latest version
git:20260427.d8961b6, committed Apr 27, 2026
Size
3,815 bytes
Repository stars
47
License
MIT

Use when the user is finishing a track and wants to check it's ready to send to a mastering engineer or for self-mastering. Audits headroom, peak levels, mono compatibility, frequency balance, LUFS. Examples - "is this ready to master?", "audit my mix before export", "check my levels".

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

# Mastering Prep

Pre-master audit. Confirm the mix is in a clean state for either external mastering or self-mastering. Does NOT apply final mastering — that's a separate workflow with explicit user intent.

## Workflow

### 1. Read the master bus

- `get_track_info` for master
- `get_device_parameters` for any plugins on master
- Check current peak level, RMS, LUFS if available

### 2. Run the audit checklist

For each item, mark ✅ pass or ❌ fail with the specific reading:

| Check | Target | What to look for |
| --- | --- | --- |
| **Peak level** | -3 to -6 dB | Master should have headroom — never above -1 dB |
| **No master limiter active for export-to-mastering** | Off | Mastering engineer wants raw mix; remove limiter from master |
| **No master compressor over 2 dB GR** | <2 dB | Heavy mastering compression on a pre-master is destructive |
| **LUFS integrated** | -16 to -20 LUFS for pre-master | Too loud = no headroom for mastering |
| **Mono compatibility** | All elements audible in mono | Toggle Utility's mono switch — verify nothing disappears |
| **Phase coherence** | Above 0.0 (positive) | Use Spectrum or Stereo & Phase — dips below 0 = destructive cancellation |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add glincker/ableton-skills/mastering-prep@sha256:09dca15c458a41fc

The line at the top of this page pins the label git:20260427.d8961b6, 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_r5r5cznzmm6rq7ol.svg)](https://markdownregistry.com/a/art_r5r5cznzmm6rq7ol)

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

Versions

The registry has recorded 1 version of this file, committed on Apr 27, 2026.

versioncommittedcommitsizeaudit
git:20260427.d8961b6 latest2026-04-27 d8961b6 3,815 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 (3815 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

glincker/ableton-skills · 47 stars · license MIT · pushed 2026-09-23 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_r5r5cznzmm6rq7ol
GET https://markdownregistry.com/api/v1/resolve?ref=glincker/ableton-skills/mastering-prep
GET https://markdownregistry.com/api/v1/blob/09dca15c458a41fcebfbe63e3baa5e7944fa66cc27b69630f331795543529f79

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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