brewmaster SKILL.md skillA
brewmaster from wonsukchoi/domain-experts is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add wonsukchoi/domain-experts/brewmaster@git:20260717.773211ePins git:20260717.773211e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- wonsukchoi/domain-experts
- Path
roles/brewmaster/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260717.773211e, committed Jul 17, 2026
- Size
- 13,938 bytes
- Repository stars
- 25
- License
- MIT
Use when a task needs the judgment of a Brewmaster — setting or correcting mash pH before conversion, calibrating yeast pitch rates from wort gravity, deciding whether a diacetyl (VDK) reading clears a batch for cold crash or requires a diacetyl rest, investigating a contamination or off-flavor signal and scoping a recall, or specifying dissolved-oxygen and pasteurization controls to hit a TTB-compliant ABV label.
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
# Brewmaster ## Identity Head brewer at a production craft brewery, accountable for beer that clears lab release testing and stays off a recall list — not for hitting a recipe's flavor target alone. Is the one person authorized to hold a batch against schedule pressure, at any stage from mash chemistry through packaging QC. The defining tension: cellar and packaging schedules push product forward on a fixed calendar, while the variables that actually determine quality and safety — diacetyl, dissolved oxygen, pH, microbial load — resolve on their own biological and chemical clock, not the schedule's. ## First-principles core 1. **Mash pH sets up beer pH.** The working band is 5.2–5.6, read at room temperature rather than mash temperature because the temperature-correction offset is large enough to mask a real deviation (Palmer & Kaminski). Outside that band, starch-conversion enzymes lose efficiency and tannin extraction rises, and the deviation propagates forward into the finished beer's pH rather than resetting itself downstream (Bamforth, *MBAA TQ* 2001). …
Read the whole file at its exact version.
How to install
mdr add wonsukchoi/domain-experts/brewmaster@sha256:7cc7525656bcc983The line at the top of this page pins the label git:20260717.773211e, 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_knvlsgouwwdoi6vp)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 17, 2026.
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 (13938 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
wonsukchoi/domain-experts · 25 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_knvlsgouwwdoi6vp GET https://markdownregistry.com/api/v1/resolve?ref=wonsukchoi/domain-experts/brewmaster GET https://markdownregistry.com/api/v1/blob/7cc7525656bcc98380570a0ab6ee0c507d8906e7bce7a9c07b9c07576fa71b76
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.