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.
npx skills add glincker/claude-code-marketplace --skill changelog-generatorgit clone --depth 1 https://github.com/glincker/claude-code-marketplaceWrote 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.
[](https://agentmods.dev/skills/glincker/claude-code-marketplace/changelog-generator)<a href="https://agentmods.dev/skills/glincker/claude-code-marketplace/changelog-generator"><img src="https://agentmods.dev/badge/skills/glincker/claude-code-marketplace/changelog-generator/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.
<a href="https://agentmods.dev/skills/glincker/claude-code-marketplace/changelog-generator"><img src="https://agentmods.dev/badge/skills/glincker/claude-code-marketplace/changelog-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00018 | $0.01604 |
| Opus 5.5 | $0.00007 | $0.00642 |
| Sonnet 5.5 | $0.00004 | $0.00321 |
| Haiku 4.5 | $0.00002 | $0.00160 |
Grade A, and why
changelog-generator 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.
How it starts
The opening of the file, as written. The whole thing — 271 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Changelog Generator
Automatically generate CHANGELOG.md from git commit history following Keep a Changelog format. Groups changes by type, links commits, and maintains semantic versioning.
What This Skill Does
- Parses git commit history
- Groups changes by type (Added, Changed, Fixed, etc.)
- Follows Keep a Changelog format
- Links to commits and PRs
- Supports conventional commits
- Updates existing CHANGELOG.md
Instructions
Phase 1: Analyze Git History
# Get commits since last release
git log v1.0.0..HEAD --pretty=format:"%H|%s|%an|%ad" --date=short
# Or all commits if no releases
git log --pretty=format:"%H|%s|%an|%ad" --date=short
Phase 2: Parse Commit Messages
Detect commit types (Conventional Commits):
feat: Add user authentication → Added
fix: Resolve login bug → Fixed
docs: Update README → Documentation
refactor: Simplify auth logic → Changed
perf: Optimize database queries → Changed
test: Add unit tests → Testing
chore: Update dependencies → Maintenance
Phase 3: Generate 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
- User authentication with JWT tokens [#42](https://github.com/user/repo/pull/42)
- Password reset functionality [@johndoe](https://github.com/johndoe) [abc123](https://github.com/user/repo/commit/abc123)
- Two-factor authentication support
### Changed
- Improved error handling in API endpoints
- Updated UI components to use new design system
- Refactored database connection pooling
### Fixed
- Login button not working on mobile devices [#38](https://github.com/user/repo/issues/38)
- Memory leak in background job processor
- SQL injection vulnerability in search endpoint
### Security
- Updated dependencies with known vulnerabilities
- Implemented rate limiting on auth endpoints
- Added CSRF protection
## [1.2.0] - 2025-01-10
### Added
- Dark mode support
- Export data to CSV functionality
### Fixed
- Cache invalidation issue
- Timezone handling in date picker
## [1.1.0] - 2025-01-05
### Added
- User profile customization
- Email notifications
### Changed
- Improved performance of dashboard queries
## [1.0.0] - 2025-01-01
### Added
- Initial release
- Core functionality
- Basic user management
- API endpoints
[Unreleased]: https://github.com/user/repo/compare/v1.2.0...HEAD
[1.2.0]: https://github.com/user/repo/compare/v1.1.0...v1.2.0
[1.1.0]: https://github.com/user/repo/compare/v1.0.0...v1.1.0
[1.0.0]: https://github.com/user/repo/releases/tag/v1.0.0
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 271 lines · 18 tokens per session scan A 38c8b0c62b7b
changelog-generator is a skill published in the GitHub repository glincker/claude-code-marketplace (37 stars, last pushed 27d ago), licensed Apache-2.0. It adds 18 tokens to every session and 1,604 once invoked, about $0.0001 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 2026-08-30.
Other skills, from other repositories
atlas-changelog
Maintain per-repo and cross-repo changelogs — append structured entries after agent work. Use when asked to "log this change", "update changelog", "what changed", "change history".
write-changelog
Generates a CHANGELOG.md entry for a release by summarizing git commits since the last tag. Groups changes by type: Added, Changed, Fixed, Removed. Follows Keep a Changelog format (https://keepachangelog.com). Invoked when the user asks to update the changelog, write release notes, or prepare a release.
Changelog Curator
Maintains and formats a CHANGELOG.md following Keep a Changelog conventions from git history or PR list.
Release Notes Generator
Generates clear, user-friendly release notes from a git log or list of PRs.
Changelog Generator
Generate release notes from git commits, updates, or feature lists.
Release Engineering
Semantic versioning, changelog generation, and release/hotfix management so releases are predictable and reversible.