Is Hammerspoon MCP server safe?
Probably. Read the findings first.
Use with care. Some checks failed or could not be verified.
What to know before installing
- highShell command built from a string (injection risk)
How Hammerspoon compares
Against every graded Media MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 62/100
- higher than 16% of 1,337 Media servers
- Tools that change things
- 12%
- typical: 4%. Fewer write tools means less an agent can break
What its tools let an agent do: 66 read · 9 change
Public scan report
scanner v0.1.9 · 2026-09-23 · same rubric, same numbers if you re-run it
1 high1 medium
- Code scan21 source files scanned8/25
- –Live reliabilityno gateway calls yet and no remote to proben/a
- –Tool poisoningtools not inspected (local package is not executed); not countedn/a
- Auth qualitylocal package, no credentials required12/15
- Maintenancelast push 47 days ago12/15
- Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Findings (2)
- mediumeval / new Function used
exec.evaldist/audio-tools.js: …t per-device) return bridge.eval(` if _mcpAudioWatcher then _mcpA…
- highShell command built from a string (injection risk)
exec.shell-concatdist/bridge.js: … try { const result = execSync(`${this.hsPath} -c '${escaped}'`, { timeout: t…
Overall 62/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON
Other servers that do what Hammerspoon does
- MacosControl macOS settings, apps, windows, audio, Music, displays, screenshots, and Focus mode via MCP.not reviewedGrowingA
- FunASRTranscribe local audio with FunASR and SenseVoice using private, on-device inference.not reviewedEstablishedA
- FFmpegTrim, convert, resize, compress, and remix audio and video.not reviewedEstablishedA
