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exact-calc MCP server

by flacales·io.github.flacales/exact-calc-mcp·v0.1.0
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Exact arithmetic for AI agents. Two independent engines cross-check every result.

B82/100grade B
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Safety scan
B82/100

full report

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

exact-calc tools (5)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • are_equal

    Test whether two expressions are mathematically equal.

  • calculate

    Evaluate an arithmetic expression exactly, with cross-validation.

  • engine_status

    Report which calculation engines are available.

  • to_fraction

    Convert a decimal string to its exact fraction.

  • verify

    Compute an expression and report how confident the result is.

Public scan report

scanner v0.1.10 · 2026-10-02 · same rubric, same numbers if you re-run it

1 medium
  • Code scan7 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 0 days ago15/15
  • Maintainer identityregistry namespace matches repository owner6/10

Findings (1)

  • mediumeval / new Function usedexec.eval
    exact_calc_mcp-0.1.0/exact_calc_mcp/engine_py.py: …确计算引擎 两个关键设计决定，都是踩过坑才想明白的： 1. **为什么不用 eval()** eval() 会把 `__import__('os').syste…
Overall 82/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How exact-calc compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
82/100
higher than 63% of 48,255 servers
Tools
5
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break

What its tools let an agent do: 5 read

Install exact-calc in Claude Code, Cursor or VS Code

claude mcp add exact-calc-mcp -- uvx exact-calc-mcp
Add to Cursor

exact-calc: common questions

Is exact-calc MCP server safe?
Mostly: it is graded B (82/100). Read the exact-calc safety report
How do I install exact-calc?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does exact-calc need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is exact-calc maintained?
The last commit was 33 days ago (2026-10-02). The latest release is v0.1.0.
How does exact-calc compare with other MCP servers?
safety score 82/100 (higher than 63% of 48,255 servers); tools 5 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.