Crypto_MCP

Instructions

Implementation Reference

• src/service/digest.ts:152-157 (handler)

  MCP tool handler that invokes DigestUtil.sha224 on the input and formats the result as MCP text content.

  ({ input }) => {
    const hash = DigestUtil.sha224(input);
    return {
      content: [{ type: "text", text: hash }],
    };
  }

• src/service/digest.ts:149-151 (schema)

  Zod input schema defining a single string parameter for the string to hash.

  {
    input: z.string().describe("The input string to hash"),
  },

• src/service/digest.ts:146-158 (registration)

  Registration of the sha224 tool on the MCP server, specifying name, description, schema, and handler.

  server.tool(
    "sha224",
    "Calculate SHA-224 hash of a string",
    {
      input: z.string().describe("The input string to hash"),
    },
    ({ input }) => {
      const hash = DigestUtil.sha224(input);
      return {
        content: [{ type: "text", text: hash }],
      };
    }
  );

• src/service/digest.ts:57-64 (helper)

  Static utility method in DigestUtil class that computes the SHA-224 hash using CryptoJS.

   * Calculate SHA-224 hash of a string
   * @param input The input string to hash
   * @returns 56-character hexadecimal SHA-224 hash
   */
  static sha224(input: string): string {
    const hash = CryptoJS.SHA224(input);
    return hash.toString();
  }