Calc MCP server

by coo-quack·io.github.coo-quack/calc-mcp·v2.1.1

21 MCP tools for math, randomness, dates, encoding, hashing, and more — deterministic and accurate.

B83/100grade B

What users say

No reviews yet

Safety scan

B83/100

Adoption

Growing

9 stars267 downloads/wk

Reviews

Nobody has reviewed Calc yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

No tool declarations could be read from the package source. They show once the server is installed.

scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

1 medium

Code scan2 source files scanned20/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 1 days ago15/15
Maintainer identityregistry namespace matches repository owner7/10

mediumeval / new Function usedexec.eval

dist/index.js: …ludes("Cloudflare"))return!1;try{return new Function(""),!0}catch(e){return!1}});function Bi(…

Overall 83/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

Runs npx -y @coo-quack/calc-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add calc-mcp -- npx -y @coo-quack/calc-mcp

Is Calc MCP server safe?: Mostly: it is graded B (83/100). Read the Calc safety report
How do I install Calc?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Calc need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Calc maintained?: The last commit was 2 days ago (2026-09-18). The latest release is v2.1.1.