world-of-claudecraft: Skill for Claude Code

.claude/skills/qa/SKILL.md

qa is a skill for Claude Code from levy-street/world-of-claudecraft. It costs 33 tokens per session (813 once invoked), scanned A, original, MIT.

A final quality check for a code change before it is marked complete. It reviews the changed files and brings in the project-specific reviewers named by the checklist.

In plain words
What is it for?
Use it to review a feature, fix, or group of changes at the end of development. It can focus on a named feature, phase, or list of files.
Why use it?
It helps catch missing tests, broken project rules, and overlooked problems before the change is considered finished.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

This is levy-street/world-of-claudecraft's own configuration. It tells Claude Code how to work on world-of-claudecraft 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 world-of-claudecraft configures →

About the project

World of ClaudeCraft is a browser-based classic-style multiplayer online game with a persistent shared world that can also run locally or be controlled through a Python reinforcement-learning interface. Players can quest and raid in the online world, while developers can host it themselves and train AI agents to play. The catalogue skills, agents, instructions, hooks, and setting support workflows for interacting with and developing the game.

levy-street/world-of-claudecraft · 2,251 stars · on GitHub · worldofclaudecraft.com

Reuse

Borrowing it

Nothing to install: this file belongs to levy-street/world-of-claudecraft. 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/levy-street/world-of-claudecraft/main/.claude/skills/qa/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/levy-street/world-of-claudecraft

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 qa

README.md
[![agentmods](https://agentmods.dev/badge/skills/levy-street/world-of-claudecraft/qa/github.svg)](https://agentmods.dev/skills/levy-street/world-of-claudecraft/qa)
Your own site
<a href="https://agentmods.dev/skills/levy-street/world-of-claudecraft/qa"><img src="https://agentmods.dev/badge/skills/levy-street/world-of-claudecraft/qa/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 qa

Your own site · 80×15
<a href="https://agentmods.dev/skills/levy-street/world-of-claudecraft/qa"><img src="https://agentmods.dev/badge/skills/levy-street/world-of-claudecraft/qa.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 813 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 warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 42
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 43
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
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 $0.00033 $0.00813
Opus 5 $0.00016 $0.00407
Sonnet 5 $0.00007 $0.00163
Haiku 4.5 $0.00003 $0.00081

Measured 13d ago against content hash 531b88e2946d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

qa 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 13d 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.

.claude/skills/qa/SKILL.md · 56 lines

What it actually says

You are running the project's end-of-contribution QA gate. Do this now, before the change is called done.

  1. Scope the review from the diff: git diff --name-only for uncommitted work. For committed work, merge-base against the branch's own base, never main (work is based off the latest release branch and main trails it, so a merge-base against main sweeps the whole release into scope). Fallback chain: the upstream, else the newest origin/release/* branch, else origin/main:

    base=$(git rev-parse --abbrev-ref '@{upstream}' 2>/dev/null) ||
      base=$(git for-each-ref --sort=-creatordate --format='%(refname:short)' \
        'refs/remotes/origin/release/*' | head -1)
    git diff --name-only "$(git merge-base HEAD "${base:-origin/main}")"..HEAD
    

    If the user passed an argument (a feature name, phase, or file list), use it to focus the scope.

  2. Dispatch the qa-checklist agent over that scope. It is the read-only gate: it scales its own depth to the size of the change, checks every repo invariant in play, and ends with an adversarial "what is missing" pass. Let it run; do not duplicate its work inline.

  3. If the change is more than a trivial single-surface edit, also fan out a small coverage pass in parallel: one agent for correctness, one for test coverage, one for dead code, each prompted for COVERAGE (report every gap with confidence and severity), not filtering.

  4. Dispatch the domain reviewer agents that qa-checklist names for the surfaces this diff touches (for example privacy-security-review, migration-safety, database-performance-reviewer for SQL, indexes, query call sites, pool or lock behavior, timeout policy, or stored-data growth, cross-platform-sync, architecture-reviewer, and on a release branch release-malware-audit). Spawn them fresh; never have the implementer review its own work.

  5. Run the deterministic floor yourself so the verdict rests on green checks, not only agent reasoning: npm run ci:changed (Biome on the changed files), npx tsc --noEmit, and npx vitest run tests/architecture.test.ts tests/localization_fixes.test.ts. Report any red.

  6. Adversarially confirm each consequential finding before acting on it (about half of raw findings do not survive a second look). Then fix every BLOCKING and SHOULD-FIX finding, in focused commits. Report what you fixed and what remains as VERIFY (needs a run or E2E) or NICE-TO-HAVE.

End with a one-line verdict: READY or NOT READY, and the list of any VERIFY items the maintainer still has to run by hand (for example npm run perf:tour, npm run test:browser, or the mobile E2E scripts). READY is advisory judgment; node scripts/gate_select.mjs is the deterministic pre-merge contract (same step list as npm run gate with a selective test substitution; release tier on release/**; see docs/qa-gate.md), so if it has not run green this session, list it as the first VERIFY item. npm run gate remains the deeper full-suite check when you want it.

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. 13d ago First seen · 56 lines · 33 tokens per session scan A 531b88e2946d

Subscribe to this mod's changes

qa is a skill published in the GitHub repository levy-street/world-of-claudecraft (2,251 stars, last pushed yesterday), licensed MIT. It adds 33 tokens to every session and 813 once invoked, about $0.0002 per session on Opus 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.