mcpbeat

Calculator MCP Server

io.github.cyanheads/calculator-mcp-server
answering

Calculator MCP Server is answering right now. Last checked 5 min ago. 129 installs a week from npm. It exposes 1 tools. Last commit 2 Jul 2026.

Evaluate, simplify, and differentiate mathematical expressions.

Installs per day peak 71 · avg 22 · +8% w/w
a month agotoday
Uptime history 39 hours of history · worst hour 75%
39 hours agonow
100.0%
Uptime 24h
91 of 91 checks
1
Tools
read from the server
340 ms
Response time
average over 24h
129
Installs / week
npm and PyPI

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

run in your terminal
claude mcp add calculator-mcp-server --transport http https://calculator.caseyjhand.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "calculator-mcp-server": {
      "url": "https://calculator.caseyjhand.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.calculator-mcp-server]
url = "https://calculator.caseyjhand.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "calculator-mcp-server": {
      "url": "https://calculator.caseyjhand.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "calculator-mcp-server": {
      "url": "https://calculator.caseyjhand.com/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

calculate
calculate
Evaluate math expressions, simplify algebraic expressions, or compute symbolic derivatives. One expression per call. Supports arithmetic, trigonometry, statistics, matrices, complex numbers, units, and combinatorics.

Endpoints

URLTransportStateLatencyChecked
https://calculator.caseyjhand.com/mcp streamable-http answering 160 ms 5 min ago

Calculator MCP Server — questions

Answers built from our own checks of this server.

What can Calculator MCP Server do?
It exposes 1 tools, read directly from the server on our last check. Among them: calculate. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Calculator MCP Server working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 340 ms. The bar chart above shows every period we have measured.
How do I connect Calculator MCP Server?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Calculator MCP Server need an API key?
No. Calculator MCP Server completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Calculator MCP Server?
It answers our handshake in 340 ms on average, which is faster than 41% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Calculator MCP Server?
The npm package @cyanheads/calculator-mcp-server was installed 129 times in the last week. Week over week that is +8%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Calculator MCP Server open source?
Yes — it is published under the Apache-2.0 licence, written in TypeScript, 1 stars on GitHub and 2 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.