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 agentmods add skills/howells/arc/commitnpx skills add howells/arc --skill commitgit clone --depth 1 https://github.com/howells/arcWhat 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 | $0.00055 | $0.02758 |
| Opus 5 | $0.00028 | $0.01379 |
| Sonnet 5 | $0.00011 | $0.00552 |
| Haiku 4.5 | $0.00006 | $0.00276 |
Grade A, and why
commit 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.
How it starts
The opening of the file, as written. The whole thing — 262 lines — stays where its author put it; the contents beside it link to each section on GitHub.
<arc_runtime>
Requires the full Arc bundle. Arc-owned paths (agents/, references/, disciplines/, templates/, scripts/, rules/, skills/) resolve from the plugin root — the directory containing agents/ and skills/. Everything else is the user's repository.
</arc_runtime>
<rules_context> Load before committing:
rules/git.md— commit-message, husky, and lint-staged conventions this skill must respect. Its Hooks section describes repo setup (audit/launch territory), not a commit-time obligation — an unsatisfied MUST there is a note, not a task.references/diff-review-checklist.md— apply during the pre-commit review step (step 1).
</rules_context>
Commit Changes
Commit, push, and publish changes, intelligently splitting into separate commits when changes span multiple domains.
Usage:
/arc:commit- Auto-analyze and commit (may create multiple commits)/arc:commit push- Commit, push, then publish changed npm packages if present/arc:commit publish- Alias for the push-and-publish path
On the push/publish path, /arc:commit publishes a package whose version is already committed and not yet on the registry. /arc:release owns bumping versions, changelogs, and coordinated multi-package releases. Route version bumps there instead of doing them here.
The canonical order across both skills is commit → push → publish → tag.
Read the user's invocation: no argument means commit only; "push" or "publish" both mean the push-and-publish path.
Inspect Current Git State
Run these commands first and read the output before deciding on a commit strategy:
git status --porcelain 2>/dev/null || echo "(no changes)"
git diff --stat 2>/dev/null | head -20 || echo "(no diff)"
git log --oneline -5 2>/dev/null || echo "(no commits)" # style reference
git status --porcelain is the authoritative file list (the stat is a preview, and it truncates); read the contents of untracked files before judging them stray.
If there are no changes, tell the user and stop.
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.
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.
- 2d ago First seen · 262 lines · 55 tokens per session scan A e6ce07c62904
commit is a skill published in the GitHub repository howells/arc (25 stars, last pushed 18d ago), licensed MIT. It adds 55 tokens to every session and 2,758 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.
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