mcproc: Skill for Claude Code

.claude/skills/release-preview/SKILL.md

release-preview is a skill for Claude Code from neptaco/mcproc. It costs 44 tokens per session (548 once invoked), scanned A, original, MIT.

A release-preview procedure for reviewing the changes planned for the next software release. It uses version tags, commit history, and the Unreleased section of a changelog—a file that records project changes.

In plain words
What is it for?
It is for previewing release contents, classifying commits, suggesting the next version number, and running Rust formatting, lint, and test checks.
Why use it?
It helps identify which changes belong in release notes and choose a major, minor, or patch version based on their impact.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

This is neptaco/mcproc's own configuration. It tells Claude Code how to work on mcproc itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcproc configures →

Reuse

Borrowing it

Nothing to install: this file belongs to neptaco/mcproc. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/neptaco/mcproc/main/.claude/skills/release-preview/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/neptaco/mcproc

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for release-preview

README.md
[![agentmods](https://agentmods.dev/badge/skills/neptaco/mcproc/release-preview/github.svg)](https://agentmods.dev/skills/neptaco/mcproc/release-preview)
Your own site
<a href="https://agentmods.dev/skills/neptaco/mcproc/release-preview"><img src="https://agentmods.dev/badge/skills/neptaco/mcproc/release-preview/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for release-preview

Your own site · 80×15
<a href="https://agentmods.dev/skills/neptaco/mcproc/release-preview"><img src="https://agentmods.dev/badge/skills/neptaco/mcproc/release-preview.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 548 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00044 $0.00548
Opus 5.5 $0.00018 $0.00219
Sonnet 5.5 $0.00009 $0.00110
Haiku 4.5 $0.00004 $0.00055

Measured 2mo ago against content hash 450f1a11fd5d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

release-preview scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/release-preview/SKILL.md · 76 lines

What it actually says

リリースプレビュー

次回リリースに含まれる変更をプレビューします。

実行手順

以下のコマンドを順番に実行してください:

1. 現在の状態確認

git describe --tags --abbrev=0 2>/dev/null || echo "タグなし"
git branch --show-current
git status --short

2. 前回リリースからのコミット一覧

最新タグがある場合:

git log --oneline --no-merges $(git describe --tags --abbrev=0)..HEAD

タグがない場合:

git log --oneline --no-merges -20

3. CHANGELOG の Unreleased セクション確認

CHANGELOG.md の先頭部分を確認し、Unreleased セクションがあるか確認:

head -50 CHANGELOG.md

4. 変更の分類

コミット一覧から以下を分類して報告:

リリースノートに含まれるもの:

  • feat: 新機能
  • fix: バグ修正
  • BREAKING CHANGE: 破壊的変更

リリースノートに含まれないもの:

  • docs:, test:, chore:, ci:, build:, refactor:, style:, perf:

5. 推奨バージョンの提示

変更タイプ 次のバージョン
BREAKING CHANGE あり メジャーアップ(例: v1.x.x → v2.0.0)
feat: あり マイナーアップ(例: v1.0.x → v1.1.0)
fix: のみ パッチアップ(例: v1.0.0 → v1.0.1)

6. 品質チェック

cargo fmt -- --check && cargo clippy --all-targets -- -D warnings && cargo test

次のステップ

リリースを実行する場合:

/release v<VERSION>
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 76 lines · 44 tokens per session scan A 450f1a11fd5d

Subscribe to this mod's changes

release-preview is a skill published in the GitHub repository neptaco/mcproc (10 stars, last pushed 25d ago), licensed MIT. It adds 44 tokens to every session and 548 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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