Koskamo

exact-calc MCP

An MCP server providing exact arithmetic for AI agents by outsourcing calculations to two independently written engines: Python exact rational/decimal arithmetic and a separate C++ evaluator. Results are only returned when both engines agree, ensuring accuracy for operations where LLMs typically fail, such as 0.1 + 0.2 or large integer powers.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

exact-calc MCP logo, by flacalesCommunity listingLocal stdioSource reviewed; not executedPublished by flacales
You need:pip install -e .
Vendor documentation

What you can do with it

  • Perform exact arithmetic for AI agents
  • Cross-check results using two independent engines
  • Calculate precise fractions and decimals

Source and maintenance

Community listingRegistry 0.1.0
mcp-registry: io.github.flacales/exact-calc-mcp@0.1.0Source repository
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

exact-calc-mcp 0.1.0

pypiuvx
exact-calc-mcp package definition
{
  "version": "0.1.0",
  "transport": "stdio",
  "identifier": "exact-calc-mcp",
  "runtimeHint": "uvx",
  "registryType": "pypi",
  "runtimeArguments": [
    {
      "type": "positional",
      "value": "exact-calc-mcp",
      "description": "Package to run; the console script is started with --serve"
    },
    {
      "type": "positional",
      "value": "--serve",
      "description": "Start as an MCP stdio server"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "exact-calc-mcp": {
      "command": "uvx",
      "args": [
        "exact-calc-mcp==0.1.0"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "exact-calc-mcp": {
      "command": "uvx",
      "args": [
        "exact-calc-mcp==0.1.0"
      ]
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "exact-calc-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "exact-calc-mcp==0.1.0"
      ]
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "exact-calc-mcp": {
      "command": "uvx",
      "args": [
        "exact-calc-mcp==0.1.0"
      ]
    }
  }
}

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