Cursor calculator mcp server calculate
How to: Cursor calculator mcp server calculate
Add calculator mcp server to Cursor
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01
Open ~/.cursor/mcp.json and merge this in. Keep any servers already there.
{
"mcpServers": {
"calculator-mcp-server": {
"url": "https://calculator.caseyjhand.com/mcp"
}
}
}-
02
Save the file and restart Cursor.
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03
Ask for something calculate does. Cursor lists the server's tools on connect and calls calculate itself — you do not invoke it by name.
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04
If nothing happens, check the server is running and that calculator mcp server's identifier in your config matches the one above exactly.
Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs
Set these first
calculator mcp server will not start until these are set, so calculate never becomes available.
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CALC_MAX_EXPRESSION_LENGTH -
CALC_EVALUATION_TIMEOUT_MS -
CALC_MAX_RESULT_LENGTH -
MCP_LOG_LEVEL
Same tool, other clients
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.