What is changelog-gen?

A tool that builds a CHANGELOG.md file from Git commits and pull requests between releases. A changelog is a record of what changed in each software version.

Use it to generate Keep a Changelog-formatted release notes and links for versions managed with conventional commits and semantic versioning.

It saves time assembling release notes and gives users a consistent history of added, changed, fixed, removed, or security-related work.

changelog-gen — Skill for Claude Code by andregusman-raiz

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 andregusman-raiz/a-gusman-claude --skill changelog-gen

Clone the repo

git clone --depth 1 https://github.com/andregusman-raiz/a-gusman-claude

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/andregusman-raiz/a-gusman-claude/changelog-gen/github.svg)](https://agentmods.dev/skills/andregusman-raiz/a-gusman-claude/changelog-gen)

Your own site

<a href="https://agentmods.dev/skills/andregusman-raiz/a-gusman-claude/changelog-gen"><img src="https://agentmods.dev/badge/skills/andregusman-raiz/a-gusman-claude/changelog-gen/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/andregusman-raiz/a-gusman-claude/changelog-gen"><img src="https://agentmods.dev/badge/skills/andregusman-raiz/a-gusman-claude/changelog-gen.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,866 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 warn 7 Sept 2026

SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Excessive Agency · line 4
Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.

Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00046	$0.01866
Opus 5.5	$0.00018	$0.00746
Sonnet 5.5	$0.00009	$0.00373
Haiku 4.5	$0.00005	$0.00187

Measured 1mo ago against content hash 45adf559021f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

changelog-gen 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.

skills/changelog-gen/SKILL.md · 220 lines

How it starts

The opening of the file, as written. The whole thing — 220 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Changelog Gen Skill

Gerar changelogs automaticos a partir de git history, commits convencionais e PRs.

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/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

### Added
- New feature X for doing Y

### Changed
- Updated dependency Z to v2.0

### Deprecated
- Old API endpoint /v1/foo (use /v2/foo instead)

### Removed
- Dropped support for Node 16

### Fixed
- Bug where login failed with special characters (#123)

### Security
- Updated jwt library to patch CVE-2026-XXXX

## [1.2.0] - 2026-03-26

### Added
- Feature A (#100)
- Feature B (#101)

### Fixed
- Bug C (#102)

## [1.1.0] - 2026-03-15

### Added
- Initial release

[Unreleased]: https://github.com/owner/repo/compare/v1.2.0...HEAD
[1.2.0]: https://github.com/owner/repo/compare/v1.1.0...v1.2.0
[1.1.0]: https://github.com/owner/repo/releases/tag/v1.1.0

Categorias (Conventional Commits -> Changelog)

Commit Prefix	Changelog Section
`feat:`	Added
`fix:`	Fixed
`refactor:`	Changed
`perf:`	Changed
`docs:`	Changed
`deprecate:`	Deprecated
`BREAKING CHANGE:`	Changed (com destaque)
`security:`	Security
`chore:`	(ignorar)
`ci:`	(ignorar)
`test:`	(ignorar)

Git Log Parsing

Entre tags

# Commits entre duas tags
git log v1.0.0..v2.0.0 --oneline --no-merges

# Com corpo completo (para breaking changes)
git log v1.0.0..v2.0.0 --format="%H %s%n%b" --no-merges

# Desde ultima tag ate HEAD
LAST_TAG=$(git describe --tags --abbrev=0)
git log ${LAST_TAG}..HEAD --oneline --no-merges

# Todas as tags ordenadas por data
git tag --sort=-creatordate | head -10

Filtrar por tipo

# Apenas features
git log v1.0.0..HEAD --oneline --no-merges --grep="^feat"

# Apenas fixes
git log v1.0.0..HEAD --oneline --no-merges --grep="^fix"

# Breaking changes
git log v1.0.0..HEAD --format="%H %s%n%b" | grep -B1 "BREAKING CHANGE"

Read the full file on GitHub · 220 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.

1mo ago First seen · 220 lines · 46 tokens per session scan A 45adf559021f

Subscribe to this mod's changes

changelog-gen is a skill published in the GitHub repository andregusman-raiz/a-gusman-claude (18 stars, last pushed 1mo ago), licensed MIT. It adds 46 tokens to every session and 1,866 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 2026-09-03.

Claude Code Git and workflow Releases Writing and docs ai-agents automation developer-tools

release-announcement

Write a release announcement — changelog, blog post, in-app note, or social post — that leads with user impact, names the audience, and includes upgrade/migration steps without filler.

paperclipai/paperclip · 42 tokens

release-notes

Generate user-facing release notes from tickets, PRDs, or changelogs. Creates clear, engaging summaries organized by category (new features, improvements, fixes). Use when writing release notes, creating changelogs, announcing product updates, or summarizing what shipped.

phuryn/pm-skills · 57 tokens

changelog-gen