mcp-codex-worker: Skill for Claude Code

.claude/skills/worker-validation-and-qa/SKILL.md

worker-validation-and-qa is a skill for Claude Code from sorryorc/mcp-codex-worker. It costs 30 tokens per session (191 once invoked), scanned A, original, MIT.

A checklist and evidence standard for reviewing changes made by coding workers or automated agents. It distinguishes passing tests from proof that the result is semantically correct.

In plain words
What is it for?
Use it before accepting worker output to review tests, repository scope, execution receipts, missing checks, and the need for independent semantic review.
Why use it?
It helps prevent incomplete, unsafe, or misunderstood work from being accepted just because a command ran or a test passed.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions Codex.

This is sorryorc/mcp-codex-worker's own configuration. It tells Claude Code how to work on mcp-codex-worker 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 mcp-codex-worker configures →

Reuse

Borrowing it

Nothing to install: this file belongs to sorryorc/mcp-codex-worker. 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/sorryorc/mcp-codex-worker/main/.claude/skills/worker-validation-and-qa/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/sorryorc/mcp-codex-worker

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 worker-validation-and-qa

README.md
[![agentmods](https://agentmods.dev/badge/skills/sorryorc/mcp-codex-worker/worker-validation-and-qa/github.svg)](https://agentmods.dev/skills/sorryorc/mcp-codex-worker/worker-validation-and-qa)
Your own site
<a href="https://agentmods.dev/skills/sorryorc/mcp-codex-worker/worker-validation-and-qa"><img src="https://agentmods.dev/badge/skills/sorryorc/mcp-codex-worker/worker-validation-and-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 worker-validation-and-qa

Your own site · 80×15
<a href="https://agentmods.dev/skills/sorryorc/mcp-codex-worker/worker-validation-and-qa"><img src="https://agentmods.dev/badge/skills/sorryorc/mcp-codex-worker/worker-validation-and-qa.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 191 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.
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 $0.00030 $0.00191
Opus 5.5 $0.00012 $0.00076
Sonnet 5.5 $0.00006 $0.00038
Haiku 4.5 $0.00003 $0.00019

Measured 2mo ago against content hash 7594f4f62890, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

worker-validation-and-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 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.

.claude/skills/worker-validation-and-qa/SKILL.md · 35 lines

What it actually says

Worker Validation And QA

Evidence Bar

  • Passing checks prove only the checked behavior.
  • A receipt proves runtime execution shape, not semantic correctness.
  • A low trajectory score is a review signal.
  • Critical tasks need independent semantic review or main-thread review.

Acceptance Checklist

  • Relevant tests passed.
  • Scope is clean.
  • Receipt abnormal verdict is accepted or explicitly handled.
  • Episode has no unexpected missing gates.
  • No new blocking behavior without blocking_policy=enforce.

When Not To Use

Do not use this for writing user-facing docs. Use worker-docs-and-writing.

Verification

  • npm test
  • npm run codex:guard

Provenance and maintenance

Add failed QA cases to tests before changing acceptance rules.

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. 2mo ago First seen · 35 lines · 30 tokens per session scan A 7594f4f62890

Subscribe to this mod's changes

worker-validation-and-qa is a skill published in the GitHub repository sorryorc/mcp-codex-worker (2 stars, last pushed 1mo ago), licensed MIT. It adds 30 tokens to every session and 191 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.

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