Git Commit with Auto-Changelog

A git commit helper that creates a searchable Markdown changelog entry for each commit. Each entry records what changed, why, problems, dependencies, tests, and next steps.

In plain words
What is it for?
Use it when committing code changes to set up or update the changelog, index entries, and record testing notes.
Why use it?
It preserves the reasoning and practical details behind code changes instead of leaving only a short commit message.

Skill for Claude CodeCodex

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 skills/justfinethanku/cc-changelog-plugin/commit
Any agent
npx skills add justfinethanku/cc-changelog-plugin --skill commit
Clone the repo
git clone --depth 1 https://github.com/justfinethanku/cc-changelog-plugin

Made for: Claude Code, Codex.

Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,413 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 $0.00040 $0.02413
Opus 5 $0.00020 $0.01207
Sonnet 5 $0.00008 $0.00483
Haiku 4.5 $0.00004 $0.00241

Measured 2d ago against content hash 85467cafc6c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Git Commit with Auto-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 2d 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/commit/SKILL.md · 347 lines

How it starts

The opening of the file, as written. The whole thing — 347 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Git Commit with Auto-Changelog Skill

Automatically documents code changes in a searchable changelog when committing to git.

Purpose

Every commit creates a structured changelog entry that captures:

  • What changed (files, features, fixes)
  • Why (decision rationale)
  • Issues encountered
  • Dependencies added
  • Testing notes
  • Next steps

All entries are indexed in an auto-generated README for easy searching.

Usage

The skill activates automatically when you ask to commit changes:

"Commit these changes"
"Let's commit this work"
"Create a git commit with changelog for this session"

You can optionally provide a summary:

"Commit with message: Implement sectional evaluation system"

What This Skill Does

1. First-Time Setup (if changelog/ doesn't exist)

  • Creates changelog/ directory
  • Creates .changelog-keywords.txt with default tags
  • Creates initial README.md index
  • Logs the setup as first changelog entry

2. Every Commit

  • Analyzes git changes (git diff --stat)
  • Suggests keywords based on file paths
  • Prompts for changelog details (what, why, issues)
  • Generates timestamped markdown entry
  • Regenerates README index
  • Stages all changes (code + changelog)
  • Creates commit with descriptive message
  • Optionally pushes to remote

3. Maintains Searchability

  • Auto-updates README with one-line summaries
  • Groups entries by month
  • Creates keyword index at bottom
  • Enables Cmd+F searching across all sessions

Process Flow

  1. Check for changes

    • Run git status
    • If no changes, exit with message
    • If changes exist, proceed
  2. First-time setup check

    • Look for changelog/ directory
    • If missing, create full structure
    • Add setup entry to changelog
  3. Analyze changes

    • Run git diff --stat for file summary
    • Parse file paths to suggest keywords
    • Count lines added/removed
  4. Prompt user for details

    • Session description (or use provided message)
    • Why these changes were made
    • Issues encountered (optional)
    • Keywords (show suggestions, allow editing)
    • Dependencies added (if package.json changed)

Read the full file on GitHub · 347 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. 2d ago First seen · 347 lines · 40 tokens per session scan A 85467cafc6c5

Subscribe to this mod's changes

Git Commit with Auto-Changelog is a skill published in the GitHub repository justfinethanku/cc-changelog-plugin (4 stars, last pushed 10mo ago), licensed MIT. It adds 40 tokens to every session and 2,413 once invoked, about $0.0002 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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