AWS Cognito MCP Server

Implementation Reference

• index.ts:343-391 (handler)

  The handler function for the reset_password_veryify_code tool. It creates a CognitoUser instance and uses confirmPassword to verify the code and set the new password, returning success or error messages.

  async ({ username, code, newPassword }) => {
      const cognitoUser = new CognitoUser({
          Username: username,
          Pool: userPool,
      });
  
      return new Promise((resolve, reject) => {
          cognitoUser.confirmPassword(code, newPassword, {
              onSuccess: () => {
                  console.log('Password reset completed');
                  resolve({
                      content: [
                          {
                              type: "text" as const,
                              text: "Password reset successfully",
                          },
                          {
                              type: "text" as const,
                              text: `Username: ${username}`,
                          },
                          {
                              type: "text" as const,
                              text: `Verification code: ${code.substr(0, 2)}****${code.substr(-2)}`,
                          },
                          {
                              type: "text" as const,
                              text: `Password length: ${newPassword.length} characters`,
                          }
                      ]
                  });
              },
              onFailure: (err) => {
                  console.error('Password reset failed:', err.message);
                  reject({
          content: [
              {
                              type: "text" as const,
                              text: `Password reset failed: ${err.message}`,
                          },
                          {
                              type: "text" as const,
                              text: `Error code: ${(err as any).code || 'Unknown'}`,
                          }
                      ]
                  });
              }
          });
      });
  }

• index.ts:338-342 (schema)

  Zod schema defining the input parameters: username, code, and newPassword.

  {
      username: z.string(),
      code: z.string(),
      newPassword: z.string(),
  },

• index.ts:336-392 (registration)

  Registration of the reset_password_veryify_code tool using server.tool, including name, schema, and handler.

  server.tool(
      "reset_password_veryify_code",
      {
          username: z.string(),
          code: z.string(),
          newPassword: z.string(),
      },
      async ({ username, code, newPassword }) => {
          const cognitoUser = new CognitoUser({
              Username: username,
              Pool: userPool,
          });
  
          return new Promise((resolve, reject) => {
              cognitoUser.confirmPassword(code, newPassword, {
                  onSuccess: () => {
                      console.log('Password reset completed');
                      resolve({
                          content: [
                              {
                                  type: "text" as const,
                                  text: "Password reset successfully",
                              },
                              {
                                  type: "text" as const,
                                  text: `Username: ${username}`,
                              },
                              {
                                  type: "text" as const,
                                  text: `Verification code: ${code.substr(0, 2)}****${code.substr(-2)}`,
                              },
                              {
                                  type: "text" as const,
                                  text: `Password length: ${newPassword.length} characters`,
                              }
                          ]
                      });
                  },
                  onFailure: (err) => {
                      console.error('Password reset failed:', err.message);
                      reject({
              content: [
                  {
                                  type: "text" as const,
                                  text: `Password reset failed: ${err.message}`,
                              },
                              {
                                  type: "text" as const,
                                  text: `Error code: ${(err as any).code || 'Unknown'}`,
                              }
                          ]
                      });
                  }
              });
          });
      }
  )