SKILLEMALL.ai
GitHub ↗ RU Sign in

BD Audio Mastering CLI

name: audio-mastering-cli description: CLI audio mastering without a reference track using ffmpeg; accepts audio or video inputs and outputs mastered WAV/MP3 or remuxed MP4. metadata: {"openclaw":{...

modbender/skill-library-mcp Agent Skills author: modbender MIT 2 files body ≈ 384 tokens Open the sourcegithub.com↗ analyzed 2 d ago

name: audio-mastering-cli description: CLI audio mastering without a reference track using ffmpeg; accepts audio or video inputs and outputs mastered WAV/MP3…

As a process D 43/100 · Unfinished process — weak spots: result and completion, when it triggers, inputs and preconditions

IntegrationMedia and videotype 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
B
79/100
safety, quality, tests
Safety 60%
89
Quality 40%
63
Run on models
none yet
Process rating
D
43/100
Unfinished process
Result and completion w 14
0
Inputs and preconditions w 11
0
Failures and branches w 10
0
the three weakest of ten parameters · all ten

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. Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
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 · 3

✓ No critical or high findings

Medium and low: 3
  • medium Dangerous commands cmd-execpolicy-bypass README.md:25
    Runs PowerShell with execution policy bypassed
    powershell -ExecutionPolicy Bypass -File ".\scripts\mast…ps1" -InputFile ".\water.wav" -MakeMp3
  • medium Dangerous commands cmd-execpolicy-bypass README.md:31
    Runs PowerShell with execution policy bypassed
    powershell -ExecutionPolicy Bypass -File ".\scripts\mast…ps1" -InputFile ".\coyo2.mov" -MakeMp3
  • low Dangerous commands cmd-execpolicy-bypass SKILL.md:25
    Runs PowerShell with execution policy bypassed (quoted — discussed, not commanded)
    `powershell -ExecutionPolicy Bypass -File "{baseDir}/scripts/mast…ps1" -InputFile "<ruta-archivo>" -MakeMp3`
    quoted

Files scanned: 2. 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 description-no-when description does not say WHEN to use the skill (no "use when")

Process rating: all ten parameters 43/100

  • 0Result and completion. Does not say what the result is
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 0Failures and branches. Linear process with no failure handling
  • 20When it triggers. No condition that starts the skill
  • 40Consistency. Frontmatter name (Audio Mastering CLI) differs from the folder (audio-mastering-cli)
  • 60Tools and files. Uses tools (bash) that frontmatter does not declare
  • 100Steps. 16 steps
  • 100Execution cost. Instruction body is 384 tokens
  • 100Running it twice. No mutating operations
  • 100Progress reporting. Reports progress

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
  • +4No input/output examples
  • +1No license
  • +2Single-language instructions
  • +3Description length 200: enough signal without eating the budget
  • +4Structure: 6 headings
  • +3Step-by-step instructions: 16 items

Quality base 70; lint remarks subtract, signals add up to 100. Result: 63.