Calculator MCP

A simple Model Context Protocol (MCP) server that provides basic calculator functionality through MCP tools. It runs locally over stdio via the published package.

People connecting this server to Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

VERIFIED ACTIVE

LAST COMMIT 2025-10-28 · ★ 2 · #659 OF 848 MAINTAINED OTHER · VERIFIED 2026-08-25

JavaScript servers · how we verify → /methodology

01 · Install Calculator MCP

Claude Code

claude mcp add tech-sushant-calculator-mcp -- npx -y @tech-sushant/calculator-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "tech-sushant-calculator-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@tech-sushant/calculator-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license no standard license detected - usage rights unclear; check the repo before commercial use

npm package @tech-sushant/calculator-mcp - published under the repo owner's npm scope (@tech-sushant)

registry namespace io.github.tech-sushant is GitHub-verified and matches the repo owner

03 · Who maintains Calculator MCP

calculator-mcp is maintained by tech-sushant. It's the only MCP server we track from this author; the repo dates to Oct 2025.

04 · Facts

repository
github.com/tech-sushant/calculator-mcp
category
other - ranked #659 of 848 actively-maintained other servers as of 2026-08-25.
registry
io.github.tech-sushant/calculator-mcp (active, first published 2025-10-17 · 2 versions)
packages
npm:@tech-sushant/calculator-mcp

05 · Calculator MCP FAQ

What is Calculator MCP?

A simple Model Context Protocol (MCP) server that provides basic calculator functionality through MCP tools. It runs locally over stdio via the published package.

Is Calculator MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2025-10-28. We re-verify nightly.

How do I install Calculator MCP?

Run `npx -y @tech-sushant/calculator-mcp`. You can also paste the ready-made client config above.

Does Calculator MCP run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

06 · Alternatives to Calculator MCP

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