Borrowing it
Nothing to install: this file belongs to go-to-k/cdkd. 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/go-to-k/cdkd/main/.claude/skills/check/SKILL.mdgit clone --depth 1 https://github.com/go-to-k/cdkdWrote 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/go-to-k/cdkd/check)<a href="https://agentmods.dev/skills/go-to-k/cdkd/check"><img src="https://agentmods.dev/badge/skills/go-to-k/cdkd/check/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/go-to-k/cdkd/check"><img src="https://agentmods.dev/badge/skills/go-to-k/cdkd/check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00021 | $0.01662 |
| Opus 5.5 | $0.00008 | $0.00665 |
| Sonnet 5.5 | $0.00004 | $0.00332 |
| Haiku 4.5 | $0.00002 | $0.00166 |
Grade A, and why
check 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 today.
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 — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Local Quality Check
Run all local quality checks. Use during development to verify the current state quickly.
First: self-review on four axes
Walk these BEFORE the commands below and before committing. A green suite says the tests pass, not that the work is good, and none of these four is something a runner reports.
- Implementation gaps — the parallel change forgotten in a sibling command; a test or a doc not added.
- Oddities — dead code, leftover names, a half-applied refactor.
- Polish opportunities — small in-scope improvements; default to including them when they touch the same files and carry no behavior-break risk.
- Regression risk — the full suite, and the call sites of anything renamed or removed.
Say out loud what you found, then fix it before running the checks.
Steps
Run these sequentially and report results.
-
Worktree pre-flight:
[ -d node_modules ] || vp install --frozen-lockfile.git worktree adddoes not copynode_modules, and without itvp checkfails with an unnamedtypescript(tsconfig-error): Invalid tsconfig — Cannot find type definition file for 'node', reading like a broken fixture tsconfig. -
vp check --fix(typecheck + lint + Prettier, auto-fix), thenvp run check— the exact command CI'scheck-build-testjob runs. They are NOT equivalent:vp check --fixhas passed with 0 errors on a treevp run checkfailed. Do not substitutevp run lint:fix, which does not touch Prettier, so alint:fix-only run passes locally while CI failsFormatting issues found. Run both; CI parity comes from the second. -
vp run typecheck:test— type-checkstsconfig.test.json(tests/**).vp checkonly type-checkstsconfig.json(src + types), which excludes**/*.test.ts, andvp test'sType Errorsline covers only*.test-d.ts. A wrongimport typeor stale mock shape in a test file is invisible without this step. -
vp run build.
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.
- today Changed cc1d3988197e
- 9d ago Changed a3f5f37cce40
- 1mo ago Changed · +17 lines e1fa60ec6667
- 1mo ago Changed · -1 lines c649aa81a995
- 1mo ago Changed · -84 lines ed6961926203
- 1mo ago Changed · -43 lines e7971ef440d6
- 1mo ago Changed · +63 lines 81247b6d00d6
- 1mo ago Changed · +24 lines 3b5d58197f00
- 1mo ago Changed · +22 lines 74d146c6ebcf
- 1mo ago First seen · 129 lines · 21 tokens per session scan A 994b5cfdc43b
check is a skill published in the GitHub repository go-to-k/cdkd (156 stars, last pushed today), licensed Apache-2.0. It adds 21 tokens to every session and 1,662 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 2026-08-30.
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