Crypto_MCP

Instructions

Implementation Reference

• src/service/digest.ts:107-112 (handler)

  Handler function that takes input string, computes SHA-256 hash using DigestUtil.sha256, and returns it as text content.

  ({ input }) => {
    const hash = DigestUtil.sha256(input);
    return {
      content: [{ type: "text", text: hash }],
    };
  }

• src/service/digest.ts:104-106 (schema)

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

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

• src/service/digest.ts:101-113 (registration)

  Registration of the 'sha256' tool on the McpServer, including name, description, schema, and handler.

  server.tool(
    "sha256",
    "Calculate SHA-256 hash of a string",
    {
      input: z.string().describe("The input string to hash"),
    },
    ({ input }) => {
      const hash = DigestUtil.sha256(input);
      return {
        content: [{ type: "text", text: hash }],
      };
    }
  );

• src/service/digest.ts:31-34 (helper)

  Helper utility function DigestUtil.sha256 that computes the SHA-256 hash of the input string using CryptoJS.

  static sha256(input: string): string {
    const hash = CryptoJS.SHA256(input);
    return hash.toString();
  }