This server enables LLMs to use calculator for precise numerical calculations.
If you want an AI assistant working directly with Calculator, the calculator mcp server is the bridge. This server enables LLMs to use calculator for precise numerical calculations.
A Model Context Protocol server for calculating. This server enables LLMs to use calculator for precise numerical calculations.
Once connected, the assistant can call this tool directly:
calculate — Calculates/evaluates the given expressionThe server is distributed via PyPI as mcp-server-calculator, so most clients can run it without a manual build step. Add it to your MCP client's configuration and restart the client to pick it up — the copy-paste configs for Claude Desktop, Claude Code and Cursor are on this page.
Developer-tool servers are usually the first ones people connect, because they turn "help me with this code" into an assistant that can actually read the repo and act on it. Calculator sits in that group, and the shape of its toolset — calculate — tells you what it is really for. Worth comparing against the other developer tools servers in this directory before you commit to one, since several overlap in scope but differ sharply in setup cost and permissions.
| Tool | What it does |
|---|---|
| calculate | Calculates/evaluates the given expression. |
{
"mcpServers": {
"server-calculator": {
"command": "uvx",
"args": ["mcp-server-calculator"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
Kill hallucinated APIs — version-accurate, up-to-date library documentation injected straight into context.
Microsoft's official browser automation server — drive a real browser through the accessibility tree, no screenshots needed.
GitHub's official server — repos, issues, pull requests, Actions and code security, straight from your assistant.
Issue tracking at the speed of conversation — Linear's official hosted server with OAuth and zero install.
Local repository surgery — status, diffs, commits, branches and history for any repo on disk.
Timezone sanity for AI — current time anywhere and correct conversions, without the model doing date math.