io.github.coo-quack/calc-mcp
calc-mcp
21 MCP tools for math, randomness, dates, encoding, hashing, and more — deterministic and accurate.
alive probed 2026-10-14
21tools
5.6ktokens in Claude Opus 5.5
5.8ktokens in Claude Code
2.8 %of a 200k context window
3.2ko200k_base estimate
408 msto initialize
18 msto list tools
- Run it
- npx -y @coo-quack/calc-mcp@2.1.4 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- calc-mcp 2.1.4
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/coo-quack/calc-mcp
- Registry
- active, updated 2026-10-13 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| random | 395 | 12 % |
| datetime | 355 | 11 % |
| hash | 191 | 6 % |
| date | 185 | 6 % |
| ip | 175 | 6 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.coo-quack/calc-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.