io.github.mrfentmen/ninja-build-mcp
ninja-build-mcp
Is the io.github.mrfentmen/ninja-build-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-13.
Ninja MCP: parse build.ninja files, validate rules, builds and bindings.
alive probed 2026-11-15 · unchanged since 2026-11-13
- Run it
- npx -y @mrfentmen/ninja-build-mcp@1.0.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- ninja-build-mcp 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.3 % of a 1M context window
- Count
- 2.7k tokens in Claude Opus 5.5, exact, measured 2026-11-13. With the Claude Code prefix mcp__…__ on each tool name: 2.9k. The o200k_base estimate is 1.4k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/mrfentmen/awesome-servers
- Registry
- active, updated 2026-11-13 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.87×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| search | 269 | 144 | 10 % |
| diff | 244 | 131 | 9 % |
| get_record | 222 | 119 | 8 % |
| write_file | 218 | 117 | 8 % |
| list_records | 216 | 116 | 8 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.mrfentmen/nhl-mcp · alive
- io.github.mrfentmen/nhtsa-mcp · alive
- io.github.mrfentmen/nice-mcp · alive
- io.github.mrfentmen/nickel-mcp · alive
- io.github.mrfentmen/nit-mcp · alive
- io.github.mrfentmen/nix-mcp · alive
- io.github.mrfentmen/nix-packages-mcp · alive
- io.github.mrfentmen/nmodl-mcp · alive
Servers that mention build.
- ai.actwise/ideation · needs auth
- Aevia ai.aeviamodeler/aevia · needs auth
- AIS Gateway — the campus front desk for AIS MCP buildings ai.aislabs/gateway · alive
- Project Desk ai.atlier/project-desk · needs auth
- Augenix ai.augenix/build · alive
- AQL PropertyCheck — check one exact address (Gold Coast & Brisbane) ai.alphaquantlabs/propertycheck · alive
- B4 Index ai.benroberts/b4-index · alive
- Cactal ai.cactal/cactal · alive
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.