changelog

changelog is a skill for Claude Code from viknesh20-20/claude-code-tool-kit. It costs 45 tokens per session (691 once invoked), scanned A, original, MIT.

A changelog generator that reads Git history and organizes changes into Keep a Changelog sections such as Added, Fixed, Security, and Breaking Changes.

In plain words
What is it for?
Use it before a release or when documenting work since a tag. It can process the latest release range, all unreleased commits, or a specified reference.
Why use it?
It turns commit history into release notes, reducing the manual work of finding and categorizing changes.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it before a release or when documenting work since a tag. It can process the latest release range, all unreleased commits, or a specified reference.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/viknesh20-20/claude-code-tool-kit/changelog
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add viknesh20-20/claude-code-tool-kit --skill changelog
Clone the repo
git clone --depth 1 https://github.com/viknesh20-20/claude-code-tool-kit

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 changelog

README.md
[![agentmods](https://agentmods.dev/badge/skills/viknesh20-20/claude-code-tool-kit/changelog/github.svg)](https://agentmods.dev/skills/viknesh20-20/claude-code-tool-kit/changelog)
Your own site
<a href="https://agentmods.dev/skills/viknesh20-20/claude-code-tool-kit/changelog"><img src="https://agentmods.dev/badge/skills/viknesh20-20/claude-code-tool-kit/changelog/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 changelog

Your own site · 80×15
<a href="https://agentmods.dev/skills/viknesh20-20/claude-code-tool-kit/changelog"><img src="https://agentmods.dev/badge/skills/viknesh20-20/claude-code-tool-kit/changelog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 691 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.
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 $0.00045 $0.00691
Opus 5.5 $0.00018 $0.00276
Sonnet 5.5 $0.00009 $0.00138
Haiku 4.5 $0.00005 $0.00069

Measured 1mo ago against content hash 0675b2eb50a9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

changelog 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 1mo 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/changelog/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Generate Changelog

Git History

!git log --oneline --no-merges -50 2>/dev/null

Tags

!git tag --sort=-v:refname 2>/dev/null | head -10

Latest Tag

!git describe --tags --abbrev=0 2>/dev/null || echo "No tags found"


Instructions

Step 1: Determine Range

  • If a tag/ref is provided, use: git log <tag>..HEAD
  • If "last-release" is specified, find the most recent tag
  • If "unreleased" or no argument, show all commits since last tag

Step 2: Gather Commits

Run: git log <range> --oneline --no-merges

For each commit, extract:

  • Commit hash (short)
  • Commit message
  • Author
  • Date
  • PR number (if referenced)

Step 3: Categorize

Group commits using Keep a Changelog categories:

  • Added: New features, endpoints, commands, pages
  • Changed: Modifications to existing functionality, API changes
  • Fixed: Bug fixes, error corrections
  • Deprecated: Features marked for removal
  • Removed: Deleted features, removed dependencies
  • Security: Vulnerability fixes, security improvements
  • Breaking Changes: Changes that require consumer updates

Detection heuristics:

  • feat: / feature: / add: → Added
  • fix: / bugfix: / hotfix: → Fixed
  • refactor: / update: / change: → Changed
  • remove: / delete: / drop: → Removed
  • security: / vuln: / cve: → Security
  • BREAKING: / BREAKING CHANGE: → Breaking Changes
  • Other: categorize by reading the commit message

Step 4: Format Output

# Changelog

## [Unreleased] — YYYY-MM-DD

### Added
- Description of new feature (#PR)

### Changed
- Description of change (#PR)

### Fixed
- Description of fix (#PR)

### Removed
- Description of removal (#PR)

### Security
- Description of security fix (#PR)

### Breaking Changes
- Description of breaking change (#PR)

Step 5: Save or Display

  • If a CHANGELOG.md exists, prepend the new section
  • If not, create a new CHANGELOG.md
  • Always show the generated content for review before saving

Read the full file on GitHub · 97 lines

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. 1mo ago First seen · 97 lines · 45 tokens per session scan A 0675b2eb50a9

Subscribe to this mod's changes

changelog is a skill published in the GitHub repository viknesh20-20/claude-code-tool-kit (7 stars, last pushed 5mo ago), licensed MIT. It adds 45 tokens to every session and 691 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.