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Create or update a Codex skill with appropriately scoped instructions and any needed supporting resources.

openai/codex Agent Skills author: openai Apache-2.0 7 files · 3 scripts body ≈ 3 777 tokens Open the sourcegithub.com↗ analyzed 6 d ago

Create or update a Codex skill with appropriately scoped instructions and any needed supporting resources.

As a process D 43/100 · Unfinished process — References files that are not bundled: references/redlining.md, references/ooxml.md, scripts/rotate_pdf.py

GeneratorAWSSoftware developmentAI and agentstype and topics are labelled automatically from the skill text
Runs in: Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) OpenClaw Goose OpenCode
JSON
Technical rating
C
86/100
safety, quality, tests
Safety 60%
100
Quality 40%
65
Run on models
none yet
Process rating
D
43/100
Unfinished process
References files that are not bundled: references/redlining.md, references/ooxml.md, scripts/rotate_pdf.py
Tools and files w 18
0
Result and completion w 14
0
Inputs and preconditions w 11
0
the three weakest of ten parameters · all ten

How to improve

  1. Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
  2. The text references files that are not there: add them or drop the references.
For the model run — optional
  • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 0

✓ No critical or high findings

Files scanned: 7. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning description-no-when description does not say WHEN to use the skill (no "use when")
  • warning missing-ref reference to a missing file: references/redlining.md
  • warning missing-ref reference to a missing file: references/ooxml.md
  • warning missing-ref reference to a missing file: scripts/rotate_pdf.py
  • warning missing-ref reference to a missing file: references/schema.md
  • warning missing-ref reference to a missing file: references/policies.md
  • warning missing-ref reference to a missing file: references/api_docs.md
  • warning missing-ref reference to a missing file: assets/logo.png
  • warning missing-ref reference to a missing file: assets/slides.pptx
  • warning missing-ref reference to a missing file: assets/font.ttf
  • warning missing-ref reference to a missing file: assets/frontend-template/
  • warning missing-ref reference to a missing file: references/aws.md

Process rating: all ten parameters 43/100

Will not run. References files that are not bundled: references/redlining.md, references/ooxml.md, scripts/rotate_pdf.py
  • 0Tools and files. 11 referenced file(s) missing: references/redlining.md, references/ooxml.md, scripts/rotate_pdf.py
  • 0Result and completion. Does not say what the result is
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 0Progress reporting. Says nothing while it works
  • 20When it triggers. No condition that starts the skill
  • 30Running it twice. 11 mutating operations with no state check
  • 100Steps. 19 steps
  • 100Failures and branches. 2 branches, has a failure section
  • 100Consistency. Name and required fields are in place
  • 100Execution cost. Instruction body is 3777 tokens

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +5Description has no quoted example phrases that should trigger the skill
  • +4Description does not say when NOT to use the skill (false activations)
  • +3Description length 106: 120–800 characters recommended
  • +3Output format is not stated: the model decides each time
  • +2Single-language instructions
  • +4Structure: 16 headings
  • +3Step-by-step instructions: 19 items
  • +4Has examples (10 code blocks)
  • +4Reference files are cited in the instructions (1 of 1)
  • +3All 3 scripts are documented
  • +1License stated

Quality base 70; lint remarks subtract, signals add up to 100. Result: 65.

In the sandbox Скрипты не запустились

The skill's scripts were run in a throwaway machine: no network, fake keys in the home directory, a tracer watching. We wrote down what they did. Reaching for the network or for secrets caps the technical grade at C; a quiet run adds no points.

Запущено 3 скрипта; каждому дали двадцать секунд, поддельный домашний каталог с ключами и сеть, в которой ничего нет.

Ни один не дошёл до работы — им не хватило зависимостей, аргументов или файлов. Это не отзыв о поведении: наблюдать было не за чем.

scripts/generate_openai_yaml.pyне запустился: generate_openai_yaml.py: error: the following arguments are required: skill_dir
scripts/init_skill.pyне запустился: init_skill.py: error: the following arguments are required: skill_name, --path
scripts/quick_validate.pyне запустился: Usage: python quick_validate.py <skill_directory>

12 Oct 2026