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 invalid-strictgit 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/invalid-strict)<a href="https://agentmods.dev/skills/lorem-dev/skillkeeper-test-repo/invalid-strict"><img src="https://agentmods.dev/badge/skills/lorem-dev/skillkeeper-test-repo/invalid-strict/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/invalid-strict"><img src="https://agentmods.dev/badge/skills/lorem-dev/skillkeeper-test-repo/invalid-strict.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 | $0.00018 | $0.00403 |
| Opus 5.5 | $0.00007 | $0.00161 |
| Sonnet 5.5 | $0.00004 | $0.00081 |
| Haiku 4.5 | $0.00002 | $0.00040 |
Grade A, and why
invalid-strict 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
invalid-strict
This skill is expected to fail resolution. It is a negative fixture, and
the second of the two in this repository - the other is
deep-nesting/l2/l3/l4/too-deep-skill.
skillkeeper.requires is a scalar where a list of strings is required. The
namespaced block is the strict half of the two spellings: a malformed value
there is refused rather than coerced, and refusing it means the whole manifest
fails to parse, so the skill does not resolve.
Contrast the flat field, which is lenient: requires: oops at the top level
would be read as a one-element list, and an unusable entry would be dropped
with a note while the skill survived. Strictness is the point of the
namespaced block, and this fixture is what pins it.
Expected behaviour
The resolver reports one warning naming this manifest:
Skipping invalid requires/invalid-strict/SKILL.md: "skillkeeper.requires" must
be a list of strings
repo lint reclassifies it as SK003, an error, with no skill path -
there is no resolved skill to attribute it to:
SK003: Skipping invalid requires/invalid-strict/SKILL.md:
"skillkeeper.requires" must be a list of strings
Because this skill never resolves, skillkeeper skill install invalid-strict
fails with Skill not found in any tracked repository, and it is absent from
skill list output for the repository. Nothing else in the requires group
references it, so no other skill reports an SK001 on its account.
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 · 47 lines · 18 tokens per session scan A 76ae6d628a3e
invalid-strict is a skill published in the GitHub repository lorem-dev/skillkeeper-test-repo (2 stars, last pushed 2mo ago), licensed MIT. It adds 18 tokens to every session and 403 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.
invalid-strict compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| invalid-strictlorem-dev/skillkeeper-test-repo | Skill | 2 | 2mo ago | MIT | A | 18 | 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 |