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 lorem-dev/skillkeeper-test-repo --skill format-skillgit clone --depth 1 https://github.com/lorem-dev/skillkeeper-test-repoWrote 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/lorem-dev/skillkeeper-test-repo/format-skill)<a href="https://agentmods.dev/skills/lorem-dev/skillkeeper-test-repo/format-skill"><img src="https://agentmods.dev/badge/skills/lorem-dev/skillkeeper-test-repo/format-skill/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/lorem-dev/skillkeeper-test-repo/format-skill"><img src="https://agentmods.dev/badge/skills/lorem-dev/skillkeeper-test-repo/format-skill.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 | $0.00016 | $0.00257 |
| Opus 5.5 | $0.00006 | $0.00103 |
| Sonnet 5.5 | $0.00003 | $0.00051 |
| Haiku 4.5 | $0.00002 | $0.00026 |
Grade A, and why
format-skill 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
format-skill
The second skill in the tooling group. Its job is to prove that a group is a
namespace rather than a wrapper around a single skill: both this skill and
lint-skill resolve with group: tooling, and the group directory itself never
resolves as a skill.
It also carries a nested body file, config/format.toml, so a grouped skill has
the same directory-recreation and empty-directory-pruning behaviour to check as
the ungrouped documented-skill.
This skill ships neither GUIDE.md nor RULES.md. That makes it the grouped
"no guidance" case, and it is useful in one specific scenario: install
lint-skill and format-skill for the same agent, then uninstall
lint-skill. The guidance file must lose lint-skill's block, and - if that
block was the file's only content and SkillKeeper created the file - the file
itself must be deleted rather than left behind empty.
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.
- 2mo ago First seen · 25 lines · 16 tokens per session scan A f840aeb18575
format-skill is a skill published in the GitHub repository lorem-dev/skillkeeper-test-repo (2 stars, last pushed 2mo ago), licensed MIT. It adds 16 tokens to every session and 257 once invoked, about $0.0001 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.
format-skill compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| format-skilllorem-dev/skillkeeper-test-repo | Skill | 2 | 2mo ago | MIT | A | 16 | Claude Code, Codex |
| pcbwayaklofas/kicad-happy | Skill | 1.6k | today | MIT | A | 119 | Claude Code |
| asc-subscription-localizationrorkai/app-store-connect-cli-skills | Skill | 1.1k | today | MIT | A | 60 | Claude Code |
| happiness-skillkangarooking/cangjie-skill | Skill | 12k | 1mo ago | MIT | A | 136 | Claude Code, Codex |
| remotion-best-practicesguanyang/open-agent-hub | Skill | 986 | today | MIT | A | 116 | Claude Code |
| influence-psychologywondelai/skills | Skill | 2.6k | 5d ago | MIT | A | 156 | Claude Code |
| jobs-to-be-donewondelai/skills | Skill | 2.6k | 5d ago | MIT | A | 137 | Claude Code |