Borrowing it
Nothing to install: this file belongs to managedcode/GeminiSharpSDK. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/managedcode/GeminiSharpSDK/main/.codex/skills/mcaf-formatting/SKILL.mdgit clone --depth 1 https://github.com/managedcode/GeminiSharpSDKWrote 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/managedcode/geminisharpsdk/mcaf-formatting)<a href="https://agentmods.dev/skills/managedcode/geminisharpsdk/mcaf-formatting"><img src="https://agentmods.dev/badge/skills/managedcode/geminisharpsdk/mcaf-formatting/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/managedcode/geminisharpsdk/mcaf-formatting"><img src="https://agentmods.dev/badge/skills/managedcode/geminisharpsdk/mcaf-formatting.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00049 | $0.00325 |
| Opus 5.5 | $0.00020 | $0.00130 |
| Sonnet 5.5 | $0.00010 | $0.00065 |
| Haiku 4.5 | $0.00005 | $0.00032 |
Grade A, and why
mcaf-formatting 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 2mo 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.
What it actually says
MCAF: Formatting
Outputs
- Formatted code changes (consistent with repo style)
- Evidence: formatting command(s) run and any follow-up build/tests
Workflow
- Use the canonical
formatcommand fromAGENTS.md(do not invent commands). - Run the formatter on the smallest scope possible (if your tools allow it).
- Review the diff:
- ensure changes are formatting-only
- if the formatter touched many files, separate the change or confirm it was explicitly requested
- Verify (follow
AGENTS.mdfor sequencing + required commands):- for formatting-only changes: run the smallest meaningful verification the repo requires (build/tests/analyze as applicable)
- for formatting as part of a behaviour change: follow the repo’s normal order (don’t reorder the pipeline)
- If
format/linters are missing or flaky:- fix
AGENTS.mdto point to a real, repeatable command - only then rerun formatting
- fix
- Report what was run and what changed.
Guardrails
- Do not introduce unrelated refactors under the cover of formatting.
- Keep formatting changes and behaviour changes reviewable.
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.
- 2mo ago First seen · 33 lines · 49 tokens per session scan A aeb5bb72eae1
mcaf-formatting is a skill published in the GitHub repository managedcode/GeminiSharpSDK (2 stars, last pushed 2d ago), licensed MIT. It adds 49 tokens to every session and 325 once invoked, about $0.0002 per session on Opus 5.5. 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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