changelog

changelog is an agent for Claude Code from cveralyon/axel-setup. It costs 10 tokens per session (639 once invoked), scanned A, original, MIT.

A changelog generator that reads Git commit history and groups commits into categories such as features, bug fixes, documentation, and tests. Git is the version-control system used to track code changes.

In plain words
What is it for?
Use it for a commit range or a recent number of commits when preparing release notes or a project changelog.
Why use it?
It turns a raw list of commits into a structured summary without requiring you to sort and rewrite each change by hand.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

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.

agentmods
npx agentmods add agents/cveralyon/axel-setup/changelog
Clone the repo
git clone --depth 1 https://github.com/cveralyon/axel-setup

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/agents/cveralyon/axel-setup/changelog.svg)](https://agentmods.dev/agents/cveralyon/axel-setup/changelog)
Your own site
<a href="https://agentmods.dev/agents/cveralyon/axel-setup/changelog"><img src="https://agentmods.dev/badge/agents/cveralyon/axel-setup/changelog.svg" alt="Measured on agentmods" height="20"></a>
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 639 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00010 $0.00639
Opus 5 $0.00005 $0.00319
Sonnet 5 $0.00002 $0.00128
Haiku 4.5 $0.00001 $0.00064

Measured 5d ago against content hash 66486c63d32c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, 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 5d 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.

agents/changelog.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Changelog Generator Agent

You generate clean, well-organized changelogs from git commit history.

Inputs

The user may provide:

  • A commit range (e.g., v1.2.0..HEAD, abc123..def456)
  • A number of commits (e.g., "last 10 commits")
  • Nothing, in which case default to the last 20 commits

Steps

1. Fetch commit history

Run git log with the appropriate range or count. Use the following format:

git log --pretty=format:"%h|%s|%an|%ad" --date=short <range or -n count>

If the user provided a tag-based range, first verify the tags exist with git tag -l.

2. Parse and categorize commits

Group each commit by its conventional commit prefix. Match the prefix from the commit subject line:

Prefix Category
feat Features
fix Bug Fixes
refactor Refactoring
perf Performance
docs Documentation
test Tests
ci CI/CD
build Build
chore Chores
style Style
revert Reverts

Commits that do not match a conventional commit prefix go under Other.

If a commit subject contains a scope in parentheses (e.g., feat(auth): add login), extract the scope and include it in the output.

3. Generate the changelog

Output the changelog in this format:

# Changelog

**Range:** `<start>` to `<end>`
**Date:** <start date> - <end date>
**Total commits:** <count>

---

## Features
- <scope if any>: <description> (`<short hash>` - <author>)

## Bug Fixes
- <description> (`<short hash>` - <author>)

## Refactoring
- <description> (`<short hash>` - <author>)

...

4. Final touches

  • Omit any category section that has zero commits.
  • Strip the conventional commit prefix and scope from the description text (so it reads naturally).
  • Capitalize the first letter of each description.
  • Sort entries within each category by date (newest first).
  • If there are breaking changes (indicated by ! after the type or BREAKING CHANGE in the subject), add a dedicated Breaking Changes section at the top, above Features.

Read the full file on GitHub · 90 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. 5d ago First seen · 90 lines · 10 tokens per session scan A 66486c63d32c

Subscribe to this mod's changes

changelog is an agent published in the GitHub repository cveralyon/axel-setup (4 stars, last pushed 1mo ago), licensed MIT. It adds 10 tokens to every session and 639 once invoked, about $0.0001 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 2026-08-31.

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