@jarroba/mcp-calc

MCP server (stdio, local) for maths a model gets wrong: arithmetic WITH UNITS and dimensional checking (adding metres to kilos is an error, not a silent number), equations and linear systems that say whether the answer is EXACT or approximate, multi-line

npm · fingerprint 6d43e53bae5e3834e158cfc9 · repository · RSS

5tools

1recorded versions

17mtracked

tracking started

What changed

Nothing, since tracking began. That is the good outcome, and it is what most servers look like.

Current tools

Show all 5 tool fingerprints

calc_derive

19386b3ebda25261

calc_eval

6992f21fd447ea04

calc_sheet

8ccc837208b945ce

calc_solve

9af3a3aaf51d795b

calc_steps

39258eb313e212bd

Watch this server yourself

If you run this server, put the proxy in front of it. It pins these exact fingerprints on first connect and stops the session if they move.

npx -y mcp-pin@0.2.3 -- <your @jarroba/mcp-calc command>

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Badge

The badge states one fact about time and nothing else. It never claims a server is safe.

[![mcp-pin](https://mcp-pin.gautamkhosla.com/badge/3e686cc9320c95a1.svg)](https://mcp-pin.gautamkhosla.com/servers/3e686cc9320c95a1.html)