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Cal Server MCP Server

@pwh-pwh

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基本情報

カテゴリ

その他

ライセンス

MIT

トランスポート

stdio

作者

pwh-pwh

投稿者

coderpwh

Cal Server MCP Server について

用于计算数学表达式的MCP

#mcp-server

Cal Server MCP Server の設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "cal-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@smithery/cli",
        "install",
        "@pwh-pwh/cal-mcp",
        "--client",
        "claude"
      ]
    }
  }
}

Cal Server MCP Server のツール

ツール一覧はまだありません

この掲載には表示できるツール一覧がまだありません。サーバーにツールがないという意味ではありません。対応機能はプロジェクトのドキュメントをご確認ください。

上のボタンで一時的なサンドボックスでこのサーバーを実行し、ツール一覧を取得できます。

概要

What is Cal Server?

Cal Server is a lightweight mathematical expression calculation service built with FastMCP and the Bun runtime. It uses the expr-eval library to parse and evaluate user-input expressions and communicates via standard input/output (stdio), serving as a simple, efficient calculation tool with built-in constants.

How to use Cal Server?

Install automatically via Smithery (npx -y @smithery/cli install @pwh-pwh/cal-mcp --client claude) or manually (clone the repository, run bun install). Configure your MCP client with the command bunx cal-mcp. Start the service with bun run index.ts and invoke the cal tool with a string expression parameter (exp) to get the result.

Key features of Cal Server

  • Supports mathematical expression calculation via the cal tool
  • Includes built-in constants: E, PI, true, false
  • Accepts a single string expression parameter
  • Built on FastMCP for MCP protocol compatibility
  • Runs on the Bun runtime environment
  • Communicates exclusively over stdio

Use cases of Cal Server

  • Evaluating arithmetic expressions within an AI agent conversation
  • Computing results that use constants like PI or E without manual lookup
  • Performing quick math operations in a lightweight, serverless context

よくある質問

1

What runtime is required for Cal Server?

Cal Server requires the Bun runtime (latest version recommended). You can install it from https://bun.sh/.

2

How does Cal Server communicate?

It communicates over standard input and output (stdio). It does not support HTTP or other transports.

3

What built-in constants does Cal Server support?

The server includes the constants E, PI, true, and false, which map to Bun’s `Math.E`, `Math.PI`, `true`, and `false`.

4

What happens if an invalid expression is entered?

If the input is not a valid mathematical expression, Cal Server may throw an error. Ensure expressions are syntactically correct.

5

What are the known limits of Cal Server?

The service only supports stdio transport and does not include authentication. Expressions must be mathematically valid; otherwise an error may occur.

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