io.github.vukvukovich/hammerspoon-mcp
hammerspoon-mcp
Control macOS through Hammerspoon: windows, apps, and API search. Injection-safe by design.
alive probed 2026-10-15
38tools
8.1ktokens in Claude Opus 5.5
8.7ktokens in Claude Code
4.0 %of a 200k context window
4.7ko200k_base estimate
393 msto initialize
21 msto list tools
- Run it
- npx -y @vukvukovich/hammerspoon-mcp@0.4.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- hammerspoon-mcp 0.4.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/vukvukovich/hammerspoon-mcp
- Registry
- active, updated 2026-08-14 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| hs_ui_inspect | 266 | 6 % |
| hs_window_layout | 249 | 5 % |
| hs_api_search | 199 | 4 % |
| hs_open_url | 196 | 4 % |
| hs_notification | 186 | 4 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.vukvukovich/hammerspoon-mcp)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.