prefer-builtin-update SKILL.md skillA

prefer-builtin-update from ncaq/konoka is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ncaq/konoka/prefer-builtin-update@git:20260821.fe783c4

Pins git:20260821.fe783c4 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ncaq/konoka
Path
plugins/prefer-builtin-update/skills/prefer-builtin-update/SKILL.md
Versions recorded
2
Latest version
git:20260821.fe783c4, committed Aug 21, 2026
First version recorded
Aug 21, 2026
Size
2,972 bytes
Repository stars
3
License
Apache-2.0

Use the builtin Edit tool (or Write for full rewrites) instead of sed, perl, or Python one-liners when modifying files. Use when editing, replacing, or rewriting file contents.

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

# ファイル更新には組み込みのEditツールを使う

ファイルの内容を書き換える用事に、
sedやperlやPythonなどのプログラムを持ち出さないでください。
組み込みの`Edit`ツールを使ってください。
ファイルの新規作成や全体の書き直しには`Write`ツールを使ってください。

## 理由

`Edit`ツールは変更箇所が差分として表示されるため、
承認する人間が実行前に何が変わるのかを正確に確認できます。
プログラムによる置換は実行するまで結果が分からず、
毎回スクリプトの中身を読んで安全性を判断する負担が発生します。
実行後の差分も読みにくくなります。

`Edit`ツールは対象文字列が一意に定まらなければ失敗するため、
意図しない箇所を巻き込む事故が起きにくいです。
sedの正規表現による置換は想定外の行にもマッチして、
気付かないうちにファイルを壊すことがあります。

汎用スクリプト言語のワンライナーは、
シェルのクォートとスクリプト側のクォートが干渉して壊れやすく、
リトライを繰り返す原因にもなります。

## 対比

避ける:

```console
sed -i 's/foo/bar/' src/main.rs
perl -i -pe 's/foo/bar/' README.md
python3 -c "content = open('config.json').read().replace('foo', 'bar'); open('config.json', 'w').write(content)"
```

使う:
`Edit`ツールで書き換え前後の文字列を指定して置き換えます。
複数箇所を書き換える場合も、
`Edit`ツールを箇所ごとに呼び出してください。

## 例外

ものすごい量の機械的な置換で、
`Edit`ツールでは呼び出し回数が現実的でない場合に限り、
プログラムによる置換を使って構いません。

その場合もワンライナーは使わず、
`Write`ツールで置換処理をスクリプトファイルとして書き出してから実行してください。
ファイルとして残すことで人間が実行前に内容を検証できます。
実行前に対象ファイルの範囲と置換内容を説明し、
実行後は`git diff`などで結果の差分を確認してください。

## hookによる補助

このプラグインのPreToolUseフックが、
Bashツール経由のin-place編集やワンライナーによるファイル書き込みを検出して拒否します。
リトライ往復を削減するための補助動作なので、
依存しないでください。
フックは全ての書き換えパターンを検出できません。
なので最初から`Edit`ツールを使ってください。

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ncaq/konoka/prefer-builtin-update@sha256:dcc40539bfeab5e6

The line at the top of this page pins the label git:20260821.fe783c4, 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_7coo2p3rkdhdzmxo.svg)](https://markdownregistry.com/a/art_7coo2p3rkdhdzmxo)

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

Versions

The registry has recorded 2 versions of this file, all committed on Aug 21, 2026.

versioncommittedcommitsizeaudit
git:20260821.fe783c4 latest2026-08-21 fe783c4 2,972 BA view · diff
git:20260821.941ccc22026-08-21 941ccc2 2,737 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 (2972 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

ncaq/konoka · 3 stars · license Apache-2.0 · pushed 2026-10-19 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_7coo2p3rkdhdzmxo
GET https://markdownregistry.com/api/v1/resolve?ref=ncaq/konoka/prefer-builtin-update
GET https://markdownregistry.com/api/v1/blob/dcc40539bfeab5e65356691ef9b100de3f1032ee011885d0241ad3d4f2591093

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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