Mmcp.market

changelog skill

by Donchitos·Donchitos/Claude-Code-Game-Studios·25k stars·MIT

Auto-generate a changelog from git commits and sprint data. Internal and player-facing versions.

A100/100content scan

Is the changelog skill safe?

Clean: nothing in its files matched our rules. We read 1 file in the folder on 2026-09-28.

No findings.

Install the changelog skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description.

git clone --depth 1 https://github.com/Donchitos/Claude-Code-Game-Studios.git /tmp/Claude-Code-Game-Studios
mkdir -p ~/.claude/skills
cp -r /tmp/Claude-Code-Game-Studios/.claude/skills/changelog ~/.claude/skills/changelog
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

!bash "${CLAUDESKILLDIR}/../../hooks/yaml-helper.sh" resolve_config --keys automation

Automation mode: Resolve modes.automation (project.local.yaml → project.yaml → default collaborative). Every AskUserQuestion call and every file write follows .claude/docs/automation-modes.md (collaborative asks always · guided major-only · autonomous logs and proceeds; automationalwaysask categories always prompt).

Recent History

Recent commits:

!git log --oneline -30 2>/dev/null || true

Recent tags (newest first):

!git tag --list --sort=-v:refname 2>/dev/null | head -5

Provenance check — before trusting the history above

The commits above may not belong to this game. This skill's history blocks are auto-resolved before the body runs, so the read has already happened — what this check governs is whether that output is usable, not whether it is fetched.

UI, or a bug in those), Framework / maintenance (subjects naming skills, hooks, agents, the test plan, CI, or the framework's own docs), or Unclear — and treat Unclear as Framework.

  1. Read the injected commit subjects above.
  2. Classify each one as Game (mechanics, content, balance, art, audio,
  1. Decide from the counts:

of how many you used.

  • At least one Game commit → proceed using only those, and state how many
  • Zero Game commits → stop, using the message below.

Filter per commit; a repo containing maintenance work is not a wrong repo.

Every project on this framework accumulates commits touching hooks, CI and

skills — the game repo is the framework repo. Listing those as a hard STOP

fires on virtually every real project and contradicts step 2 whenever the

history is mostly the game's. The harm is those commits becoming release copy,

and excluding them prevents that precisely.

This rule is kept identical to /patch-notes' on purpose — the two read the

same history for different audiences, and they must not disagree about whose

history it is. Change both together.

The genuine wrong-history signal is different: Game commits naming a product that design/ and src/ never mention. If you see that, stop.

If no commit in the range is this game's, say so and stop:

"The git history in this repo does not appear to belong to [game]. The recent

commits describe [what they actually describe]. I cannot generate a changelog

from it — point me at the right history, or supply the change list directly."

Why this is a hard stop, not a warning. This exact failure is real, not hypothetical: a batch of framework-internal commits produced player-facing copy reading "Fixed an issue where progress from your last session could be lost on launch" — a session-hook timeout rendered as a gameplay fix for a game with no save system. It was fluent, plausible, and entirely false. A reader cannot tell the difference; only this check can.

Do not treat the preamble's existence as evidence. Injected output means the command ran, never that its subject is your game.

Both blocks are resolved before this skill runs. Use them as the starting point for Phase 2 rather than re-running the same commands.

Phase 1: Parse Arguments

Read the argument for the target version or sprint number. If a version is given, use the corresponding git tag. If a sprint number is given, use the sprint date range.

Verify the repository is initialized: run git rev-parse --is-inside-work-tree to confirm git is available. If not a git repo, inform the user and abort gracefully.

Phase 2: Gather Change Data

Read the git log since the last tag or release:

git log --oneline [last-tag]..HEAD

If no tags exist, bound the range explicitly — git log --oneline -n 100. Do not fall back to the full log: on an established repo that is thousands of lines for a changelog covering one release, and the oldest of them are the least relevant. If 100 commits does not reach far enough back, say so and ask for a start ref rather than widening blindly.

Read sprint reports from production/sprints/ for the relevant period to understand planned work and context behind changes.

Read completed design documents from design/gdd/ for any new features implemented during this period.

Phase 3: Categorize Changes

Categorize every change into one of these categories:

  • New Features: Entirely new gameplay systems, modes, or content
  • Improvements: Enhancements to existing features, UX improvements, performance gains
  • Bug Fixes: Corrections to broken behavior
  • Balance Changes: Tuning of gameplay values, difficulty, economy
  • Known Issues: Issues the team is aware of but have not yet resolved
  • Miscellaneous: Changes that do not fit the above categories, or commits whose messages are too vague to classify confidently

For each commit, check whether the message contains a task ID or story reference (e.g. [STORY-123], TR-, #NNN, or similar). Count commits that lack any task reference and include this count in the Phase 4 Metrics section as: Commits without task reference: [N].

Phase 4: Generate Internal Changelog

# Internal Changelog: [Version]
Date: [Date]
Sprint(s): [Sprint numbers covered]
Commits: [Count] ([first-hash]..[last-hash])

## New Features
- [Feature Name] -- [Technical description, affected systems]
  - Commits: [hash1], [hash2]
  - Owner: [who implemented it]
  - Design doc: [link if applicable]

## Improvements
- [Improvement] -- [What changed technically and why]
  - Commits: [hashes]
  - Owner: [who]

## Bug Fixes
- [BUG-ID] [Description of bug and root cause]
  - Fix: [What was changed]
  - Commits: [hashes]
  - Owner: [who]

## Balance Changes
- [What was tuned] -- [Old value -> New value] -- [Design intent]
  - Owner: [who]

## Technical Debt / Refactoring
- [What was cleaned up and why]
  - Commits: [hashes]

## Miscellaneous
- [Change that didn't fit other categories, or vague commit message]
  - Commits: [hashes]

## Known Issues
- [Issue description] -- [Severity] -- [ETA for fix if known]

## Metrics
- Total commits: [N]
- Files changed: [N]
- Lines added: [N]
- Lines removed: [N]
- Commits without task reference: [N]

Phase 5: Generate Player-Facing Changelog

# What is New in [Version]

## New Features
- **[Feature Name]**: [Player-friendly description of what they can now do
  and why it is exciting. Focus on the experience, not the implementation.]

## Improvements
- **[What improved]**: [How this makes the game better for the player.
  Be specific but avoid jargon.]

## Bug Fixes
- Fixed an issue where [describe what the player experienced, not what was
  wrong in the code]
- Fixed [player-visible symptom]

## Balance Changes
- [What changed in player-understandable terms and the design intent.
  Example: "Healing potions now restore 50 HP (up from 30) -- we felt
  players needed more recovery options in late-game encounters."]

## Known Issues
- We are aware of [issue description in player terms] and are working on a
  fix. [Workaround if one exists.]

---
Thank you for playing! Your feedback helps us make the game better.
Report issues at [link].

Phase 6: Output

Output both changelogs to the user. The internal changelog is the primary working document. The player-facing changelog is ready for community posting after review.

Phase 7: Offer File Write

After presenting the changelogs, ask the user:

"May I write this changelog to docs/CHANGELOG.md?

[A] Yes, append this entry (recommended if the file already exists)

[B] Yes, overwrite the file entirely

[C] No — I'll copy it manually"

recommendation to [A] append.

  • Check whether docs/CHANGELOG.md exists before asking. If it does, default the

the existing file (newest entries first).

More skills from Donchitos/Claude-Code-Game-Studios

  • AadoptBrownfield audit — do existing artifacts actually work? Numbered migration plan. Unlike /project-stage-detect, checks compliance not existence.
  • Aarchitecture-decisionCreate an ADR documenting a technical decision: context, alternatives considered, consequences.
  • Aarchitecture-reviewTraceability matrix mapping GDD requirements to ADRs. Finds gaps, cross-ADR conflicts, engine compatibility. PASS/CONCERNS/NOT ASSESSED/FAIL.
  • Aart-bibleAuthor the Art Bible — visual identity gating asset production. Run before /map-systems.
  • Aasset-auditAudit assets against naming conventions, file size budgets, format standards. Finds orphaned assets, missing references.
  • Aasset-specPer-asset visual specs plus AI generation prompts from GDDs and character profiles. After the art bible.
  • Abalance-checkFind balance outliers, broken progressions, degenerate strategies, economy imbalances in formulas and data. 'Check game balance'.
  • AbrainstormGuided concept ideation using professional studio techniques, player psychology, creative exploration.
  • Abug-reportStructured bug report from a description, or analyze code for potential bugs. Reproduction steps, severity.
  • Abug-triageRe-evaluate open bugs — priority vs severity, assign to sprints, surface systemic trends. Run when the count grows.
  • Acode-reviewArchitectural code review — coding standards, SOLID, testability, performance concerns.
  • Aconsistency-checkScan GDDs against the entity registry for cross-document conflicts. Grep-first approach targets conflicting sections, different stats.

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