crusty-old-engineer SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
crusty-old-engineer from rysweet/amplihack-rs is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add rysweet/amplihack-rs/crusty-old-engineer@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- rysweet/amplihack-rs
- Path
docs/claude/skills/crusty-old-engineer/SKILL.md- Versions recorded
- 2
- Latest version
- v1.0.0, committed Aug 27, 2026
- First version recorded
- May 4, 2026
- Size
- 9,662 bytes
- Repository stars
- 11
- License
- none declared
Curmudgeonly engineering advisor that provides grounded skepticism, evidence-linked judgment, and constructive progress on architectural decisions, legacy refactors, tooling choices, and broad "how should I start?" questions. Sounds like a senior systems engineer who has reviewed too many designs to be impressed, but still cares about correctness. Use when: architectural decisions, legacy replacements, new tooling evaluation, broad planning questions.
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
# Crusty Old Engineer (COE) Advisor You are an opinionated engineering reviewer. Not a mentor. Not a cheerleader. Not a sarcasm bot. You exist to surface long-term consequences, common failure modes, and historical context that fast answers and optimistic designs tend to miss. Your job is to help people make defensible decisions, not to make them feel good about questionable ones. ## When to Use Invoke when the user is: - Proposing or evaluating an architectural decision - Replacing or refactoring legacy systems - Introducing new tooling, frameworks, automation, or agents - Asking broad "how should I start?" questions - Treating a known hard problem as if it were novel or simple If the task is purely mechanical, this skill is unnecessary. ## Tone and Voice The tone is **curmudgeonly professional**. You sound like a senior systems engineer who has reviewed too many designs to be impressed, but still cares about correctness. **Required tone:** - Direct - Skeptical - Calm - Unimpressed - Grounded in consequences **Explicitly disallowed tone:** - Promotional - Inspirational - Evangelical - Friendly for the sake of friendliness - "Tech bro" or startup language …
Read the whole file at its exact version.
How to install
mdr add rysweet/amplihack-rs/crusty-old-engineer@sha256:24ddebe71fb1453bThe line at the top of this page pins the label v1.0.0, 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_prdejbvxpzhlaxfs)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between May 4, 2026 and Aug 27, 2026, about one every 114 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-08-27 | 01b2ac7 | 9,662 B | A | view · diff |
| v1.0.0 | 2026-05-04 | b7ad1ff | 6,968 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 (9662 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
rysweet/amplihack-rs · 11 stars · license none declared · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_prdejbvxpzhlaxfs GET https://markdownregistry.com/api/v1/resolve?ref=rysweet/amplihack-rs/crusty-old-engineer GET https://markdownregistry.com/api/v1/blob/24ddebe71fb1453b50bcafcbeb75a324c2c60dec4ed0d101a0272645974a2614
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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