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CF skill-creator

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.

ClawHub Agent Skills author: chindden v0.1.0 8 files body ≈ 4 349 tokens Open the sourceclawhub.ai↗ analyzed 35 h ago

Guide for creating effective skills.

As a process F 37/100 · Will not run — References files that are not bundled: FORMS.md, REFERENCE.md, EXAMPLES.md

GeneratorWordAWSGoogle CloudAI and agentsWriting and documentstype and topics are labelled automatically from the skill text
Runs in: OpenClaw 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) Goose OpenCode
JSON
Technical rating
C
74/100
safety, quality, tests
Safety 60%
95
Quality 40%
69
Run on models
52
No improvement model run: 61% with skill · 43% without
Process rating
F
37/100
Will not run
References files that are not bundled: FORMS.md, REFERENCE.md, EXAMPLES.md
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
This is a copy of a skill from another catalog; the rating counts the canonical one: skill-creator (ClawHub)

What is at stake

Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.

Dangerous commands medium severity

Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.

If you install

The skill contains commands that delete files, rewrite disks or execute code fetched from the network. The agent may run them without asking if it believes the instructions require it.

For the author

Replace destructive commands with safe equivalents that ask for confirmation, scope them to one folder, and stop piping curl into a shell: pin a version and a checksum.

How to improve

  1. 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 · 1

✓ No critical or high findings

Medium and low: 1
  • medium Dangerous commands cmd-autorun-instruction SKILL.md:262
    Instructs the agent to auto-run a script on every session
    When creating a new skill from scratch, always run the `init_skill.py` script. The script conveniently generates a new template skill directory that automatically includes everything a skill requires,

Files scanned: 8. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning missing-ref reference to a missing file: FORMS.md
  • warning missing-ref reference to a missing file: REFERENCE.md
  • warning missing-ref reference to a missing file: EXAMPLES.md
  • warning missing-ref reference to a missing file: DOCX-JS.md
  • warning missing-ref reference to a missing file: REDLINING.md
  • warning missing-ref reference to a missing file: OOXML.md
  • warning missing-ref reference to a missing file: scripts/rotate_pdf.py
  • warning missing-ref reference to a missing file: references/finance.md
  • warning missing-ref reference to a missing file: references/mnda.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/frontend-template/
  • warning missing-ref reference to a missing file: assets/font.ttf
  • warning missing-ref reference to a missing file: assets/hello-world/
  • warning missing-ref reference to a missing file: references/schema.md

Process rating: all ten parameters 37/100

Will not run. References files that are not bundled: FORMS.md, REFERENCE.md, EXAMPLES.md
  • 0Tools and files. 17 referenced file(s) missing: FORMS.md, REFERENCE.md, EXAMPLES.md
  • 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
  • 50When it triggers. No condition that starts the skill
  • 55Failures and branches. 1 branches
  • 60Steps. 69 steps, 7 vague phrases
  • 70Execution cost. Instruction body is 4349 tokens
  • 100Consistency. Name and required fields are in place
  • 100Running it twice. Mutating operations check current state

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)
  • +3Output format is not stated: the model decides each time
  • -5TODO / placeholder text left in the skill
  • -31 of 3 scripts are never mentioned in SKILL.md
  • +2Single-language instructions
  • +3Description length 226: enough signal without eating the budget
  • +4Structure: 22 headings
  • +3Step-by-step instructions: 69 items
  • +4Has examples (8 code blocks)
  • +4Reference files are cited in the instructions (2 of 2)
  • +1License stated

Quality base 70; lint remarks subtract, signals add up to 100. Result: 69.

Model run · 7 Sept 2026

With the skill
61%
+17 pp vs baseline
Without the skill (baseline)
43%
triggers: +100% / −100%

No improvement Pass rate 61% is below threshold 80% · 7 cases · $0.080

External checks

ClawHub: suspicious
The skill is a coherent skill-authoring helper, but its packaging script can accidentally include sensitive local files through symlinks.
LLM: suspicious (high) · VirusTotal: suspicious · 10 Sept 2026