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Calculator MCP server — evaluate, simplify, and differentiate math expressions.
npx @getmcp/cli add io.github.cyanheads/calculator-mcp-serverRequires Node.js 18+. Community-contributed server. Review source before installing.
Config file: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"io.github.cyanheads/calculator-mcp-server": {
"command": "bun",
"args": [
"@cyanheads/calculator-mcp-server",
"run",
"start:stdio"
],
"env": {
"CALC_MAX_EXPRESSION_LENGTH": "1000",
"CALC_EVALUATION_TIMEOUT_MS": "5000",
"CALC_MAX_RESULT_LENGTH": "100000",
"MCP_LOG_LEVEL": "info"
}
}
}
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