cdkd: Skill for Claude Code

.claude/skills/check/SKILL.md

check is a skill for Claude Code from go-to-k/cdkd. It costs 21 tokens per session (1,662 once invoked), scanned A, original, Apache-2.0.

A local project check that runs type checking, code-style checks, formatting, builds, and tests.

In plain words
What is it for?
Use it during development to verify that the current code works and to apply automatic formatting or fixes where supported.
Why use it?
It catches problems before code is sent to continuous integration—the automated checks run by a project after changes are submitted.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is go-to-k/cdkd's own configuration. It tells Claude Code how to work on cdkd itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything cdkd configures →

View source ↗ go-to-k/cdkd
Reuse

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.

Copy the file
curl -O https://raw.githubusercontent.com/go-to-k/cdkd/main/.claude/skills/check/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/go-to-k/cdkd

Made for: Claude Code.

Wrote 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.

agentmods badge for check

README.md
[![agentmods](https://agentmods.dev/badge/skills/go-to-k/cdkd/check/github.svg)](https://agentmods.dev/skills/go-to-k/cdkd/check)
Your own site
<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.

agentmods 80×15 button for check

Your own site · 80×15
<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>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,662 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce 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

Measured today against content hash cc1d3988197e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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.

.claude/skills/check/SKILL.md · 127 lines

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.

  1. Implementation gaps — the parallel change forgotten in a sibling command; a test or a doc not added.
  2. Oddities — dead code, leftover names, a half-applied refactor.
  3. Polish opportunities — small in-scope improvements; default to including them when they touch the same files and carry no behavior-break risk.
  4. 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.

  1. Worktree pre-flight: [ -d node_modules ] || vp install --frozen-lockfile. git worktree add does not copy node_modules, and without it vp check fails with an unnamed typescript(tsconfig-error): Invalid tsconfig — Cannot find type definition file for 'node', reading like a broken fixture tsconfig.

  2. vp check --fix (typecheck + lint + Prettier, auto-fix), then vp run check — the exact command CI's check-build-test job runs. They are NOT equivalent: vp check --fix has passed with 0 errors on a tree vp run check failed. Do not substitute vp run lint:fix, which does not touch Prettier, so a lint:fix-only run passes locally while CI fails Formatting issues found. Run both; CI parity comes from the second.

  3. vp run typecheck:test — type-checks tsconfig.test.json (tests/**). vp check only type-checks tsconfig.json (src + types), which excludes **/*.test.ts, and vp test's Type Errors line covers only *.test-d.ts. A wrong import type or stale mock shape in a test file is invisible without this step.

  4. vp run build.

Read the full file on GitHub · 127 lines

Changes

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.

  1. today Changed cc1d3988197e
  2. 9d ago Changed a3f5f37cce40
  3. 1mo ago Changed · +17 lines e1fa60ec6667
  4. 1mo ago Changed · -1 lines c649aa81a995
  5. 1mo ago Changed · -84 lines ed6961926203
  6. 1mo ago Changed · -43 lines e7971ef440d6
  7. 1mo ago Changed · +63 lines 81247b6d00d6
  8. 1mo ago Changed · +24 lines 3b5d58197f00
  9. 1mo ago Changed · +22 lines 74d146c6ebcf
  10. 1mo ago First seen · 129 lines · 21 tokens per session scan A 994b5cfdc43b

Subscribe to this mod's changes

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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