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CF Skill Builder

Create new Claude Code Skills with proper YAML frontmatter, progressive disclosure structure, and complete directory organization. Use when you need to build custom skills for specific workflows, generate skill templates, or understand the Claude Skills specification.

ruvnet/claude-flow Agent Skills author: ruvnet MIT 1 file body ≈ 5 315 tokens Open the sourcegithub.com↗ analyzed 31 h ago

Create new Claude Code Skills with proper YAML frontmatter, progressive disclosure structure, and complete directory organization.

As a process F 34/100 · No process to follow — References files that are not bundled: docs/ADVANCED.md, docs/API_REFERENCE.md, resources$examples/

GeneratorGitHubAI 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
82/100
safety, quality, tests
Safety 60%
100
Quality 40%
55
Run on models
none yet
Process rating
F
34/100
No process to follow
References files that are not bundled: docs/ADVANCED.md, docs/API_REFERENCE.md, resources$examples/
Tools and files w 18
0
Result and completion w 14
0
Failures and branches w 10
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 Builder (ruvnet/claude-flow)

The same skill appears in 1 more place: RA-Skills

How to improve

  1. The SKILL.md body is over 5,000 tokens: move reference detail into references/ and load it when needed.
  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: 1. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning name-format name should be kebab-case (lowercase letters, digits, hyphens)
  • warning body-long SKILL.md body ≈ 5315 tokens (recommended < 5000); move details to references/
  • warning missing-ref reference to a missing file: docs/ADVANCED.md
  • warning missing-ref reference to a missing file: docs/API_REFERENCE.md
  • warning missing-ref reference to a missing file: resources$examples/
  • warning missing-ref reference to a missing file: docs/TROUBLESHOOTING.md
  • warning missing-ref reference to a missing file: docs/CONFIGURATION.md
  • warning missing-ref reference to a missing file: docs/CICD.md
  • warning missing-ref reference to a missing file: ..$related-skill-1/
  • warning missing-ref reference to a missing file: ..$related-skill-2/

Process rating: all ten parameters 34/100

Will not run. References files that are not bundled: docs/ADVANCED.md, docs/API_REFERENCE.md, resources$examples/
  • 0Tools and files. 8 referenced file(s) missing: docs/ADVANCED.md, docs/API_REFERENCE.md, resources$examples/
  • 0Result and completion. Does not say what the result is
  • 0Failures and branches. Linear process with no failure handling
  • 0Progress reporting. Says nothing while it works
  • 20When it triggers. No condition that starts the skill
  • 30Running it twice. 7 mutating operations with no state check
  • 40Consistency. Frontmatter name (Skill Builder) differs from the folder (skill-builder)
  • 70Inputs and preconditions. Inputs and preconditions are listed
  • 70Execution cost. Instruction body is 5315 tokens
  • 100Steps. 69 steps

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
  • -217 emoji in the instructions: noise for the model
  • +1No license
  • +2Single-language instructions
  • +3Description length 268: enough signal without eating the budget
  • +4Structure: 60 headings
  • +3Step-by-step instructions: 69 items
  • +4Has examples (54 code blocks)

Quality base 70; lint remarks subtract, signals add up to 100. Result: 55.