SKILLEMALL.ai

BC masonry

AI-powered image and video generation using the Masonry CLI. Generate images, videos, check job status, and manage media assets.

modbender/skill-library-mcp Agent Skills author: modbender MIT 1 file body ≈ 742 tokens Open the sourcegithub.com analyzed 2 d ago

AI-powered image and video generation using the Masonry CLI.

As a process C 63/100 · Has gaps — weak spots: inputs and preconditions, failures and branches, consistency

IntegrationMedia and videotype and topics are labelled automatically from the skill text
JSON
Technical rating
B
89/100
safety, quality, tests
Safety 60%
90
Quality 40%
87
Run on models
none yet
Process rating
C
63/100
Has gaps
Inputs and preconditions w 11
0
Failures and branches w 10
0
Progress reporting w 2
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

    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 · 2

    ✓ No critical or high findings

    Medium and low: 2
    • medium Dangerous commands cmd-pipe-to-shell SKILL.md:7
      Downloads and executes remote code from an unrecognised host (pipe to shell) (the skill's own vendor host)
      compatibility: Requires masonry CLI installed (curl -sSL https://media.masonry.so/cli/install.sh | sh)
      vendor-host
    • medium Dangerous commands cmd-pipe-to-shell SKILL.md:30
      Downloads and executes remote code from an unrecognised host (pipe to shell) (the skill's own vendor host)
      curl -sSL https://media.masonry.so/cli/install.sh | sh
      vendor-host

    Files scanned: 1. Evidence is masked. Grey chips explain why severity was lowered.

    Against the Agent Skills spec

    ✓ No remarks against the Agent Skills spec

    Process rating: all ten parameters 63/100

    • 0Inputs and preconditions. Does not say what the process needs to start
    • 0Failures and branches. Linear process with no failure handling
    • 0Progress reporting. Says nothing while it works
    • 40Consistency. Frontmatter name (masonry) differs from the folder (masonry-generate-image-and-video)
    • 60Result and completion. Output format stated, no completion criterion
    • 70When it triggers. States when to use, but not when not to
    • 100Tools and files. Tools declared in frontmatter
    • 100Steps. 9 steps
    • 100Execution cost. Instruction body is 742 tokens
    • 100Running it twice. No mutating operations

    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)
    • +1No license
    • +2Single-language instructions
    • +3Description length 128: enough signal without eating the budget
    • +4Structure: 12 headings
    • +3Step-by-step instructions: 9 items
    • +3Output format is stated explicitly
    • +4Has examples (9 code blocks)

    Quality base 70; lint remarks subtract, signals add up to 100. Result: 87.