check

check is a skill for Claude Code, Codex from qwerfunch/cladding. It costs 73 tokens per session (529 once invoked), scanned A, original, MIT.

A project health check that runs 15 software checks, including type checks, tests, security checks, coverage, performance, and visual checks. It can also detect drift between project files and specifications.

In plain words
What is it for?
Use it for a full project snapshot, a continuous-integration gate, or a pre-commit verification when the project uses spec.yaml.
Why use it?
It gives one overall result before a commit or CI run, so regressions and incomplete checks are easier to spot. Strict mode treats warnings as errors.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions .claude-plugin.

Good fit Use it for a full project snapshot, a continuous-integration gate, or a pre-commit verification when the project uses spec.yaml.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/qwerfunch/cladding/check
Install

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.

Any agent
npx skills add qwerfunch/cladding --skill check
Clone the repo
git clone --depth 1 https://github.com/qwerfunch/cladding

Made for: Claude Code, Codex.

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/qwerfunch/cladding/check/github.svg)](https://agentmods.dev/skills/qwerfunch/cladding/check)
Your own site
<a href="https://agentmods.dev/skills/qwerfunch/cladding/check"><img src="https://agentmods.dev/badge/skills/qwerfunch/cladding/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/qwerfunch/cladding/check"><img src="https://agentmods.dev/badge/skills/qwerfunch/cladding/check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 529 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 $0.00073 $0.00529
Opus 5.5 $0.00029 $0.00212
Sonnet 5.5 $0.00015 $0.00106
Haiku 4.5 $0.00007 $0.00053

Measured 1mo ago against content hash 8e9cf445c426, 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 1mo 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.

plugins/antigravity/skills/check/SKILL.md · 35 lines

What it actually says

Cladding check

Run clad check from the project root. Runs the 15 Iron Law stages — Type / Lint / Drift / Commit / Arch / Secret / Unit / Coverage / Spec-conformance / Deliverable-smoke / Smoke / Performance / Visual / Audit / UAT — and aggregates the worst exit code.

  • 0 — every stage cleared or skipped clean.
  • 1 — at least one stage actually failed (fix-required).
  • 2 — every result is skip (no fail-required input on the project yet).

--strict promotes warn-severity drift findings to error, matching the CI / pre-publish gate. The Drift stage runs every active detector under src/stages/detectors/ — npm run build:plugin Phase D recounts them and writes the integer into each plugin manifest (e.g. plugins/claude-code/.claude-plugin/plugin.json), so the number is never hand-maintained.

--internal shows stage codes (stage_1.1) instead of business names (Type). Default is the business-name surface; the audit log keeps internal ids regardless.

clad check
clad check --strict
clad check --internal

Gate economy (tiers)

Pick the cheapest tier that answers your question — the full pre-push suite is expensive and grows with the project:

  • clad check --tier=pre-commit — drift / arch / secret only (spec-vs-code, no full unit suite). Use for fast inner-loop feedback while implementing.
  • clad check --tier=pre-push --strict — the full gate (type / lint / unit / cov + drift). This is what clad done <featureId> already runs, so do NOT run it separately right before clad done — one authoritative full gate per feature, not two. A GREEN run refreshes spec/attestation.yaml with the running Cladding version, strict blocking mode, detector-catalog SHA-256, module hashes, and feature markers. See docs/feature-cycle.md § Gate economy.
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. 1mo ago First seen · 35 lines · 73 tokens per session scan A 8e9cf445c426

Subscribe to this mod's changes

check is a skill published in the GitHub repository qwerfunch/cladding (16 stars, last pushed 1mo ago), licensed MIT. It adds 73 tokens to every session and 529 once invoked, about $0.0003 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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