engineering SKILL.md skillA

engineering from wellwelwel/lagune is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add wellwelwel/lagune/engineering@v1.2.2

Pins v1.2.2 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
wellwelwel/lagune
Path
.claude/skills/engineering/SKILL.md
Versions recorded
12
Latest version
v1.2.2, committed Nov 4, 2026
First version recorded
Jun 30, 2026
Size
5,473 bytes
Repository stars
174
License
Apache-2.0

Authoritative engineering reference covering code conventions, comments, TypeScript type rules, testing, and commit messages. Use before writing or changing any source file, and when suggesting a commit message.

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

# Engineering

This skill is the specialized, authoritative description of **how code is written**: the code conventions, the comment discipline, the type rules, testing, and commit messages. Consult it before writing or changing source, and whenever you apply the code conventions.

Where the project already has an established convention that contradicts one below, follow the project. These rules decide whatever the project leaves open.

## Code conventions

### Security

- Whenever you build or change code, use the `/lagune` skill ([**lagune.ai**](https://lagune.ai/llms.txt)), named `/lagune:lagune` when installed as a plugin, to improve safety by default.

### General

- **Arrow functions over `function`.** Declare with `const`. Use a `function` only when the `this` context strictly requires it.
- **Named exports only.** Never use `default export`.
- **Practice early return.** Handle edge cases up front and exit, rather than nesting the main logic.
- **No abbreviations.** Names are clear and explicit (for example `left`/`right`, not `a`/`b`, and `index`, not `i`).
- **Avoid nested `if-else-else-if`.** Favor clean, well-decoupled approaches when branching grows.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add wellwelwel/lagune/engineering@sha256:baa547631f3680e1

The line at the top of this page pins the label v1.2.2, 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_5lnik4nzajgddm6f.svg)](https://markdownregistry.com/a/art_5lnik4nzajgddm6f)

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

Versions

The registry has recorded 12 versions of this file, between Jun 30, 2026 and Nov 4, 2026, about one every 12 days.

versioncommittedcommitsizeaudit
v1.2.2 latest2026-11-04 03d3df7 5,473 BA view · diff
v1.2.02026-10-25 262b355 5,645 BA view · diff
v1.0.22026-10-03 a61876d 5,407 BA view · diff
git:20261003.2c5a4bd2026-10-03 2c5a4bd 2,963 BA view · diff
git:20261003.fb2ea8b2026-10-03 fb2ea8b 6,900 BA view · diff
git:20261003.d4e3cdf2026-10-03 d4e3cdf 7,518 BA view · diff
git:20261003.e33a0712026-10-03 e33a071 6,904 BA view · diff
git:20260710.8f519bb2026-07-10 8f519bb 6,458 BA view · diff
git:20260701.0399b272026-07-01 0399b27 6,484 BA view · diff
git:20260701.61583d12026-07-01 61583d1 6,719 BA view · diff
git:20260630.c99bee02026-06-30 c99bee0 6,494 BA view · diff
git:20260630.d0b86fa2026-06-30 d0b86fa 6,644 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 (5473 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

wellwelwel/lagune · 174 stars · license Apache-2.0 · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_5lnik4nzajgddm6f
GET https://markdownregistry.com/api/v1/resolve?ref=wellwelwel/lagune/engineering
GET https://markdownregistry.com/api/v1/blob/baa547631f3680e1b47adf49d496c26abb84ec0d3ecc094f8eda353e9b5e3d26

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 wellwelwel/lagune

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