CC save-to-spotify
Create polished audio content and save to Spotify. Produces episodes with TTS narration, a rich timeline (chapters plus in-player images, external links, and Spotify entity cards), and a cover image. Also use for raw media saves, show/episode management, and timeline navigation.
As a process C 54/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions
What is at stake
Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.
Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.
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.
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
- 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 · 10
✓ No critical or high findings
Medium and low: 10
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medium Dangerous commands
cmd-pipe-to-shellreferences/cli-usage.md:12Downloads and executes remote code from an unrecognised host (pipe to shell) (the skill's own vendor host)curl -fsSL https://saveto.spotify.com/install.sh | bash
vendor-host -
medium Dangerous commands
cmd-pipe-to-shellreferences/cli-usage.md:21Downloads and executes remote code from an unrecognised host (pipe to shell) (the skill's own vendor host)curl -fsSL https://saveto.spotify.com/install.sh | bash -s -- --version 0.2.0
vendor-host -
medium Dangerous commands
cmd-pipe-to-shellreferences/cli-usage.md:24Downloads and executes remote code from an unrecognised host (pipe to shell) (the skill's own vendor host)curl -fsSL https://saveto.spotify.com/install.sh | bash -s -- --dir ~/.local/bin
vendor-host -
medium Dangerous commands
cmd-pipe-to-shellreferences/cli-usage.md:28Downloads and executes remote code from an unrecognised host (pipe to shell) (the skill's own vendor host)curl -fsSL https://saveto.spotify.com/install.sh | bash
vendor-host -
medium Dangerous commands
cmd-privilegereferences/cli-usage.md:39Privilege escalation / world-writable permissionssudo mv save…m64 /usr/local/bin/save-to-spotify
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medium Dangerous commands
cmd-privilegereferences/cli-usage.md:44Privilege escalation / world-writable permissionssudo mv save…d64 /usr/local/bin/save-to-spotify
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medium Dangerous commands
cmd-privilegereferences/cli-usage.md:49Privilege escalation / world-writable permissionssudo mv save…d64 /usr/local/bin/save-to-spotify
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medium Dangerous commands
cmd-privilegereferences/cli-usage.md:60Privilege escalation / world-writable permissionssudo mv save-to-spotify /usr/local/bin/
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medium Dangerous commands
cmd-pipe-to-shellreferences/onboarding.md:38Downloads and executes remote code from an unrecognised host (pipe to shell) (the skill's own vendor host)curl -fsSL https://saveto.spotify.com/install.sh | bash
vendor-host -
medium Dangerous commands
cmd-pipe-to-shellSKILL.md:37Downloads and executes remote code from an unrecognised host (pipe to shell) (the skill's own vendor host)curl -fsSL https://saveto.spotify.com/install.sh | bash
vendor-host
Files scanned: 12. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- note
frontmatter-keyunknown frontmatter key "id" - note
frontmatter-keyunknown frontmatter key "enabled"
Process rating: all ten parameters 54/100
- 0Result and completion. Does not say what the result is
- 0Progress reporting. Says nothing while it works
- 20When it triggers. No condition that starts the skill
- 30Inputs and preconditions. Does not say what the process needs to start
- 60Tools and files. Uses tools (bash, python) that frontmatter does not declare
- 70Failures and branches. 11 branches
- 85Steps. 30 steps, 1 vague phrases
- 100Consistency. Name and required fields are in place
- 100Execution cost. Instruction body is 3020 tokens
- 100Running it twice. Mutating operations check current state
- medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing
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
- +1No license
- +2Single-language instructions
- +3Description length 279: enough signal without eating the budget
- +4Structure: 19 headings
- +3Step-by-step instructions: 30 items
- +4Has examples (1 code blocks)
- +4Reference files are cited in the instructions (10 of 10)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 86.