Calculator for Zed

io.github.slettmayer/calc-mcp-server

Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.

client:Zed transport:stdio runtime:pypi

Install Calculator in Zed

~/.config/zed/settings.json · windows: %APPDATA%\Zed\settings.json

{
  "context_servers": {
    "calc-mcp-server": {
      "command": "uvx",
      "args": [
        "calc-mcp-server"
      ]
    }
  }
}

Merge this into your existing settings object — do not replace the file. Zed docs