changelog-writer

changelog-writer is a skill for Claude Code, Codex from patricio0312rev/skillset. It costs 82 tokens per session (2,536 once invoked), scanned A, a copy of changelog-writer, MIT.

A tool that turns version-control history into changelogs and release notes. A changelog is a record of what changed between software versions, while semantic versioning uses version numbers to signal the type of change.

In plain words
What is it for?
Use it to group changes into additions, fixes, and other updates; flag incompatible changes; create Keep a Changelog documents; and draft release notes.
Why use it?
It saves time sorting commits, pull requests, and issue references into a readable release summary. It also helps identify breaking changes and choose a suitable version increase.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is See [MIGRATION_v2.md](./docs/MIGRATION_v2.md) for upgrade instructions..

Good fit Use it to group changes into additions, fixes, and other updates; flag incompatible changes; create Keep a Changelog documents; and draft release notes.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/patricio0312rev/skillset
agentmods
npx agentmods add skills/patricio0312rev/skillset/changelog-writer

Made for: Claude Code, Codex.

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-writer

README.md
[![agentmods](https://agentmods.dev/badge/skills/patricio0312rev/skillset/changelog-writer/github.svg)](https://agentmods.dev/skills/patricio0312rev/skillset/changelog-writer)
Your own site
<a href="https://agentmods.dev/skills/patricio0312rev/skillset/changelog-writer"><img src="https://agentmods.dev/badge/skills/patricio0312rev/skillset/changelog-writer/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-writer

Your own site · 80×15
<a href="https://agentmods.dev/skills/patricio0312rev/skillset/changelog-writer"><img src="https://agentmods.dev/badge/skills/patricio0312rev/skillset/changelog-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,536 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 100% copy Near-identical to another mod 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 $0.00082 $0.02536
Opus 5 $0.00041 $0.01268
Sonnet 5 $0.00016 $0.00507
Haiku 4.5 $0.00008 $0.00254

Measured 9d ago against content hash ff5a7f09d493, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

changelog-writer 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 9d 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.

Origin

This is a copy

100% identical to changelog-writer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

templates/foundation/changelog-writer/SKILL.md · 432 lines

How it starts

The opening of the file, as written. The whole thing — 432 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Changelog & Release Notes Writer

Generate professional changelogs and release notes from version control history.

Core Workflow

  1. Analyze commits: Parse git history since last release
  2. Categorize changes: Group by type (feat, fix, docs, etc.)
  3. Identify breaking changes: Flag incompatible changes
  4. Extract highlights: Surface most important changes
  5. Format document: Follow Keep a Changelog format
  6. Suggest version: Recommend semantic version bump
  7. Generate release notes: Create user-friendly summary

Commit Analysis

Extract Information From

  • Commit messages (preferably conventional commits)
  • PR titles and descriptions
  • Issue references (#123)
  • Merge commit messages
  • Commit authors

Parse Patterns

feat(auth): add OAuth2 support
^    ^      ^
|    |      └─ Description
|    └─ Scope (optional)
└─ Type

Types to Categories:

  • feat → Added
  • fix → Fixed
  • docs → Documentation
  • style, refactor → Changed
  • perf → Performance
  • test → Testing
  • chore, ci → Internal
  • BREAKING CHANGE → Breaking Changes

Changelog Format (Keep a Changelog)

# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

### Added

- New feature X
- Support for Y

### Changed

- Updated Z behavior

### Fixed

- Resolved issue #123

## [2.1.0] - 2024-01-15

### Added

- OAuth2 authentication support
- User profile management API
- Dark mode toggle

### Changed

- Improved error messages
- Updated dependencies to latest versions

### Deprecated

- Legacy authentication method (will be removed in 3.0.0)

### Fixed

- Memory leak in WebSocket connection
- Incorrect date formatting in reports
- Race condition in concurrent requests

### Security

- Patched XSS vulnerability in user input

## [2.0.0] - 2023-12-01

### Breaking Changes

- ⚠️ Removed support for Node.js 16
- ⚠️ Changed API response format for `/users` endpoint
- ⚠️ Renamed `config.yaml` to `config.yml`

### Added

- Complete API rewrite with improved performance
- WebSocket support for real-time updates

### Migration Guide

See [MIGRATION_v2.md](./docs/MIGRATION_v2.md) for upgrade instructions.

[unreleased]: https://github.com/user/project/compare/v2.1.0...HEAD
[2.1.0]: https://github.com/user/project/compare/v2.0.0...v2.1.0
[2.0.0]: https://github.com/user/project/releases/tag/v2.0.0

Read the full file on GitHub · 432 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. 9d ago First seen · 432 lines · 82 tokens per session scan A ff5a7f09d493

Subscribe to this mod's changes

changelog-writer is a skill published in the GitHub repository patricio0312rev/skillset (6 stars, last pushed 8mo ago), licensed MIT. It adds 82 tokens to every session and 2,536 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to changelog-writer, differing in 0 lines, and is treated as a copy.