io.github.marcimastro98/xenon-widgets
xenon-widgets
Is the io.github.marcimastro98/xenon-widgets MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-11.
Build widgets for the Xenon dashboard: SDK reference, install, runtime errors, tile screenshots.
alive probed 2026-11-15 · unchanged since 2026-11-11
- Run it
- npx -y xenon-mcp@1.0.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- xenon-widgets 1.0.1
- Capabilities
- tools
- Instructions
- 266 characters
- Of a 1M window
- 0.2 % of a 1M context window
- Count
- 1.7k tokens in Claude Opus 5.5, exact, measured 2026-10-31. With the Claude Code prefix mcp__…__ on each tool name: 1.8k. The o200k_base estimate is 1.0k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/marcimastro98/Xenon
- Registry
- active, updated 2026-11-10 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.67×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| new_widget | 325 | 195 | 19 % |
| install_widget | 239 | 143 | 14 % |
| my_widgets | 210 | 126 | 12 % |
| check_widget | 209 | 125 | 12 % |
| widget_issues | 199 | 119 | 12 % |
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Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.