index.ts•2.67 kB
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
export function registerEnergyConverter(server: McpServer) {
server.registerTool("convert_energy", {
description: "Convert between different energy units",
inputSchema: {
value: z.number().describe("Energy value to convert"),
fromUnit: z.enum([
"joule", "kilojoule", "calorie", "kilocalorie", "btu",
"watt-hour", "kilowatt-hour", "electronvolt", "foot-pound"
]).describe("Source energy unit"),
toUnit: z.enum([
"joule", "kilojoule", "calorie", "kilocalorie", "btu",
"watt-hour", "kilowatt-hour", "electronvolt", "foot-pound"
]).describe("Target energy unit")
},
// VS Code compliance annotations
annotations: {
title: "Convert Energy",
description: "Convert between different energy units",
readOnlyHint: false
}
}, async ({ value, fromUnit, toUnit }) => {
try {
// Conversion factors to joules
const toJoules: Record<string, number> = {
"joule": 1,
"kilojoule": 1000,
"calorie": 4.184,
"kilocalorie": 4184,
"btu": 1055.06,
"watt-hour": 3600,
"kilowatt-hour": 3600000,
"electronvolt": 1.602176634e-19,
"foot-pound": 1.355818
};
// Convert to joules first
const joules = value * toJoules[fromUnit];
// Convert from joules to target unit
const result = joules / toJoules[toUnit];
const units: Record<string, string> = {
"joule": "J",
"kilojoule": "kJ",
"calorie": "cal",
"kilocalorie": "kcal",
"btu": "BTU",
"watt-hour": "Wh",
"kilowatt-hour": "kWh",
"electronvolt": "eV",
"foot-pound": "ft·lb"
};
return {
content: [{
type: "text",
text: `Energy Conversion Results:
${value} ${units[fromUnit]} = ${result.toExponential(6)} ${units[toUnit]}
Formatted Results:
• Scientific: ${result.toExponential(6)} ${units[toUnit]}
• Fixed: ${result.toFixed(6)} ${units[toUnit]}
• Compact: ${result.toPrecision(6)} ${units[toUnit]}
Intermediate (Joules): ${joules.toExponential(6)} J
Common Energy Equivalents:
• 1 kWh = 3.6 MJ = 860 kcal
• 1 BTU = 1055 J = 252 cal
• 1 eV = 1.602 × 10⁻¹⁹ J`
}]
};
} catch (error) {
return {
content: [{
type: "text",
text: `Error converting energy: ${error instanceof Error ? error.message : 'Unknown error'}`
}]
};
}
}
);
}