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 Mathews-Tom/armory --skill changelog-composergit clone --depth 1 https://github.com/Mathews-Tom/armoryWrote 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/mathews-tom/armory/changelog-composer)<a href="https://agentmods.dev/skills/mathews-tom/armory/changelog-composer"><img src="https://agentmods.dev/badge/skills/mathews-tom/armory/changelog-composer/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/mathews-tom/armory/changelog-composer"><img src="https://agentmods.dev/badge/skills/mathews-tom/armory/changelog-composer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Prompt Injection · line 149 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
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 | $0.00067 | $0.01734 |
| Opus 5 | $0.00034 | $0.00867 |
| Sonnet 5 | $0.00013 | $0.00347 |
| Haiku 4.5 | $0.00007 | $0.00173 |
Grade A, and why
changelog-composer 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 10d 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 — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Changelog Composer
Transforms raw git history and PR descriptions into polished, audience-appropriate changelogs. Parses conventional commits, classifies changes by impact category, filters internal-only modifications, and produces structured release notes with PR links — following Keep a Changelog conventions.
Reference Files
| File | Contents | Load When |
|---|---|---|
references/conventional-commits.md |
Commit type parsing, scope extraction, breaking change indicators | Repository uses conventional commits |
references/categorization-rules.md |
Change classification logic, audience filtering, severity ordering | Always |
references/audience-filter.md |
User-facing vs internal change detection, exclusion patterns | Always |
references/changelog-formats.md |
Keep a Changelog, GitHub Releases, announcement copy templates | Format selection needed |
Prerequisites
- git — access to the repository history
- gh (optional) — GitHub CLI for PR description extraction
- A tagging strategy (semver tags) for identifying release boundaries
Workflow
Phase 1: Gather Raw Changes
Collect all changes between the previous release and the current state:
- Identify boundaries — Find the last release tag:
git describe --tags --abbrev=0. If no tags exist, use the initial commit or a user-specified starting point. - Extract commits —
git log <last-tag>..HEAD --oneline --no-merges - Extract PR titles —
gh pr list --state merged --base main --search "merged:>YYYY-MM-DD"or parse merge commit messages. - Parse conventional commits — If the repository follows conventional commits
(
feat:,fix:,docs:, etc.), extract type, scope, and description. Seereferences/conventional-commits.md. - Collect breaking change indicators — Look for
BREAKING CHANGE:in commit bodies,!after type (feat!:), or explicit annotations in PR descriptions.
What ships with it
5 files 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.
- 10d ago First seen · 166 lines · 67 tokens per session scan A eb6de9d21c5f
changelog-composer is a skill published in the GitHub repository Mathews-Tom/armory (316 stars, last pushed 4d ago), licensed MIT. It adds 67 tokens to every session and 1,734 once invoked, about $0.0003 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.
Other skills, from other repositories
mx-pr
Draft a pull request from the feature spec and git log, run an autonomous commit-history cleanup (content check), then publish to GitHub or GitLab (Bitbucket experimental) — or hand off. Use when a feature branch is ready for PR, standalone or from mx-flow. Usage: /mx-pr [name].
safe-public-release
Use when publishing, open-sourcing, exporting, sanitizing, or moving code, agent skills, prompts, templates, fixtures, datasets, workshop assets, or other artifacts from a private repository, vendor/runtime environment, or mixed working directory into a public repository or registry. Builds a provenance inventory…
git-workflow-and-versioning
Structures git workflow practices. Use when making any code change. Use when committing, branching, resolving conflicts, splitting uncommitted work in a messy working tree into clean atomic commits, opening or reviewing a pull request (PR), pushing to a remote, or when you need to organize work across multiple…
comet-archive
A workflow for the fifth stage of Comet Classic: archiving a completed change, merging its specification updates, and finishing the branch. It uses Comet commands and a fixed layout for tracking the change.
finishing-a-development-branch
A process for finishing a completed development branch. A branch is a separate line of code changes that can later be merged or submitted as a pull request.
skillshare-changelog
Generate CHANGELOG.md entry from recent commits in conventional format. Also syncs the website changelog page. Use this skill whenever the user asks to: generate a changelog, document what changed between tags, or create a new CHANGELOG entry. If you see requests like "write the changelog for v0.17", "what changed…