Calculator MCP

Instructions

Implementation Reference

• src/tools/sqrt.ts:6-17 (handler)

  Full implementation of the 'sqrt' tool, including schema definition and the handler function that computes Math.sqrt(a).

  export const sqrt: Tool = {
    schema: {
      name: "sqrt",
      description: "Square root of a number",
      inputSchema: zodToJsonSchema(z.object({ a: z.number() })),
    },
    handle: async (params) => {
      const a = params.a as number;
      const result = Math.sqrt(a);
      return { content: [{ type: "text", text: `The square root of ${a} is ${result}` }] };
    },
  };

• src/tools/sqrt.ts:7-11 (schema)

  Input schema for the sqrt tool using Zod for validation (expects object with 'a' number).

  schema: {
    name: "sqrt",
    description: "Square root of a number",
    inputSchema: zodToJsonSchema(z.object({ a: z.number() })),
  },

• src/server.ts:7-9 (registration)

  The 'sqrt' tool is imported and registered in the main tools array used by the MCP server.

  import { add, div, mod, mul, sqrt, sub } from "./tools";
  
  const tools = [add, div, mod, mul, sqrt, sub];

• src/tools/index.ts:5-5 (registration)

  Re-export of the sqrt tool from the tools index module.

  export * from "./sqrt";