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BC spotify-linux

Control Spotify on Linux via MPRIS DBus. Use when: (1) launching Spotify from command line, (2) playing/pausing/skipping tracks, (3) searching songs and switching playback to a specific track, (4) any Spotify playback control task on Linux.

ClawHub Agent Skills author: 七朔 v1.0.1 MIT-0 3 files · 1 script body ≈ 1 584 tokens Open the sourceclawhub.ai↗ analyzed 4 d ago

As a process C 56/100 · Has gaps — weak spots: result and completion, when it triggers, failures and branches

ReferenceInfrastructuretype 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
86/100
safety, quality, tests
Safety 60%
96
Quality 40%
71
Run on models
none yet
Process rating
C
56/100
Has gaps
Result and completion w 14
0
Failures and branches w 10
0
Progress reporting w 2
0
the three weakest of ten parameters · all ten

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 · 4

    ✓ No critical or high findings

    Medium and low: 4
    • low Dangerous commands cmd-background-process scripts/launch_spotify.sh:25
      Starts a background / autostarted process
      setsid -f spotify >/dev/null 2>&1
    • low Dangerous commands cmd-background-process SKILL.md:40
      Starts a background / autostarted process
      # 2. Launch with setsid (fully detached, survives agent restarts)
    • low Dangerous commands cmd-background-process SKILL.md:41
      Starts a background / autostarted process
      DISPLAY=:0 XAUTHORITY="$XAUTHORITY" setsid -f spotify >/dev/null 2>&1
    • low Dangerous commands cmd-background-process SKILL.md:53
      Starts a background / autostarted process (quoted — discussed, not commanded)
      Key: `setsid -f` puts Spotify in its own session, independent of the launching process tree. Without it, `nohup &` still binds the process to the same session and it dies when the parent session termi
      quoted

    Files scanned: 3. Evidence is masked. Grey chips explain why severity was lowered.

    Against the Agent Skills spec

    • warning frontmatter-yaml SKILL.md: the frontmatter is not valid YAML (YAML parse error: Nested mappings are not allowed in compact mappings at line 2, column 14: description: Control Spotify on Linux via MPRIS DBus. Use when: (1) launching S… ^ ); fields were read line by line. The usual cause is a colon inside an unquoted value

    Process rating: all ten parameters 56/100

    • 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
    • 40Consistency. Frontmatter name (spotify-linux) differs from the folder (spotify-cachyos-linux)
    • 70Inputs and preconditions. Inputs and preconditions are listed
    • 100Tools and files. No external tools needed
    • 100Steps. 13 steps
    • 100Execution cost. Instruction body is 1584 tokens
    • 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
    • -31 of 1 scripts are never mentioned in SKILL.md
    • +1No license
    • +2Single-language instructions
    • +3Description length 240: enough signal without eating the budget
    • +4Structure: 11 headings
    • +3Step-by-step instructions: 13 items
    • +4Has examples (7 code blocks)

    Quality base 70; lint remarks subtract, signals add up to 100. Result: 71.

    External checks

    ClawHub: clean
    This skill is a narrowly scoped Spotify-on-Linux controller, but users should expect it to launch Spotify, change playback, and leave the Spotify app running.
    LLM: benign (high) · VirusTotal: · 29 May 2026