changelog

changelog is a skill for Claude Code, Codex from natnew/awesome-ai-scientists. It costs 79 tokens per session (413 once invoked), scanned A, original, MIT.

A skill that creates or updates a CHANGELOG.md file from Git commit history. A changelog is a dated list of changes made to a project.

In plain words
What is it for?
Use it to generate a changelog from scratch or add commits since the newest dated section, then review the wording before committing the file.
Why use it?
It saves time when recording changes for releases or merges and keeps new entries ordered by date.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code.

Good fit Use it to generate a changelog from scratch or add commits since the newest dated section, then review the wording before committing the file.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/natnew/awesome-ai-scientists/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 natnew/awesome-ai-scientists --skill changelog
Clone the repo
git clone --depth 1 https://github.com/natnew/awesome-ai-scientists

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/natnew/awesome-ai-scientists/changelog/github.svg)](https://agentmods.dev/skills/natnew/awesome-ai-scientists/changelog)
Your own site
<a href="https://agentmods.dev/skills/natnew/awesome-ai-scientists/changelog"><img src="https://agentmods.dev/badge/skills/natnew/awesome-ai-scientists/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/natnew/awesome-ai-scientists/changelog"><img src="https://agentmods.dev/badge/skills/natnew/awesome-ai-scientists/changelog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 413 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 $0.00079 $0.00413
Opus 5 $0.00039 $0.00206
Sonnet 5 $0.00016 $0.00083
Haiku 4.5 $0.00008 $0.00041

Measured 11d ago against content hash ad620d3b9d0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, 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 11d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/changelog.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/SKILL.md · 48 lines

What it actually says

Changelog Skill

Workflow

  1. Run the script from the project root:
python skills/changelog/scripts/changelog.py

On macOS or Linux, substitute python3 if python is not on your PATH. On Windows, the bundled python launcher is correct. Claude Code can invoke either; pick whichever resolves to a Python 3 interpreter on your system.

  1. The script handles both cases automatically:

    • No CHANGELOG.md: reads full git history, writes the file with all dates
    • CHANGELOG.md exists: finds the newest ## YYYY-MM-DD heading, fetches commits after that date, prepends new sections
  2. Review the output, edit bullet wording if needed, then commit CHANGELOG.md as part of the merge commit.

Format

# Changelog

## 2026-03-31

- Add responsive design to layout and CSS
- Add Vitest test suite for components and routes

## 2026-03-30

- Initial project scaffold
  • One # Changelog title at the top
  • Date headings as ## YYYY-MM-DD, newest first
  • Each commit is one bullet; wording may be cleaned up manually after generation

Notes

  • Run from the project root (same directory as .git/)
  • Commit subjects come directly from git log; clean them up manually if needed
  • The script is idempotent: re-running when nothing is new prints a message and exits without modifying the file
Files

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.

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. 11d ago First seen · 48 lines · 79 tokens per session scan A ad620d3b9d0f

Subscribe to this mod's changes

changelog is a skill published in the GitHub repository natnew/awesome-ai-scientists (18 stars, last pushed 1mo ago), licensed MIT. It adds 79 tokens to every session and 413 once invoked, about $0.0004 per session on Opus 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.

Related

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git-worktree-isolation

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changelog-gen

A changelog generator that turns Git history into a version-by-version record of project changes. A changelog is a readable summary of new features, fixes, breaking changes, documentation, and other updates.

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