AWS Cognito MCP Server

Implementation Reference

• index.ts:167-218 (handler)

  Handler function that creates a CognitoUser and calls confirmRegistration with the provided confirmation code to confirm the signup.

  async ({ username, confirmationCode }) => {
      const cognitoUser = new CognitoUser({
          Username: username,
          Pool: userPool,
      });
  
      return new Promise((resolve, reject) => {
          cognitoUser.confirmRegistration(confirmationCode, true, (err, result) => {
              if (err) {
                  console.error('Error confirming registration:', err);
                  reject({
                      content: [
                          {
                              type: "text" as const,
                              text: `Account confirmation failed: ${err.message}`,
                          },
                          {
                              type: "text" as const,
                              text: `Error code: ${(err as any).code || 'Unknown'}`,
                          }
                      ]
                  });
              } else {
                  console.log('Account confirmed successfully:', result);
                  resolve({
                      content: [
                          {
                              type: "text" as const,
                              text: "Account confirmed successfully",
                          },
                          {
                              type: "text" as const,
                              text: `Username: ${username}`,
                          },
                          {
                              type: "text" as const,
                              text: `Confirmation code: ${confirmationCode.substr(0, 2)}****${confirmationCode.substr(-2)}`,
                          },
                          {
                              type: "text" as const,
                              text: `Result: ${result || 'SUCCESS'}`,
                          },
                          {
                              type: "text" as const,
                              text: `Time: ${new Date().toISOString()}`,
                          }
                      ]
                  });
              }
          });
      });
  }

• index.ts:163-166 (schema)

  Zod schema defining input parameters: username and confirmationCode.

  {
      username: z.string(),
      confirmationCode: z.string(),
  },

• index.ts:161-219 (registration)

  Registration of the tool using server.tool() with name, input schema, and handler function.

  server.tool(
      "confirm_code_from_email_for_signUp",
      {
          username: z.string(),
          confirmationCode: z.string(),
      },
      async ({ username, confirmationCode }) => {
          const cognitoUser = new CognitoUser({
              Username: username,
              Pool: userPool,
          });
  
          return new Promise((resolve, reject) => {
              cognitoUser.confirmRegistration(confirmationCode, true, (err, result) => {
                  if (err) {
                      console.error('Error confirming registration:', err);
                      reject({
                          content: [
                              {
                                  type: "text" as const,
                                  text: `Account confirmation failed: ${err.message}`,
                              },
                              {
                                  type: "text" as const,
                                  text: `Error code: ${(err as any).code || 'Unknown'}`,
                              }
                          ]
                      });
                  } else {
                      console.log('Account confirmed successfully:', result);
                      resolve({
                          content: [
                              {
                                  type: "text" as const,
                                  text: "Account confirmed successfully",
                              },
                              {
                                  type: "text" as const,
                                  text: `Username: ${username}`,
                              },
                              {
                                  type: "text" as const,
                                  text: `Confirmation code: ${confirmationCode.substr(0, 2)}****${confirmationCode.substr(-2)}`,
                              },
                              {
                                  type: "text" as const,
                                  text: `Result: ${result || 'SUCCESS'}`,
                              },
                              {
                                  type: "text" as const,
                                  text: `Time: ${new Date().toISOString()}`,
                              }
                          ]
                      });
                  }
              });
          });
      }
  )