diff --git a/package.json b/package.json
index 94cdbb2..b211d3a 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "test": "jest",
-    "dev": "ts-node ./index.ts",
+    "dev": "ts-node src/index.ts",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
     "format": "prettier --write ."
diff --git a/src/Gateway.ts b/src/Gateway.ts
index ef0b6d8..4755570 100644
--- a/src/Gateway.ts
+++ b/src/Gateway.ts
@@ -1,5 +1,6 @@
 import { getMeshSDK, Sdk } from '../.mesh';
 import { Organization } from './organization/organization';
+import { Auth } from './auth/auth';
 import { PDA } from './pda/pda';
 import { DataRequestTemplate } from './dataRequestsTemplate/dataRequestsTemplate';
 
@@ -8,6 +9,7 @@ export class Gateway {
   public pda: PDA;
   public dataRequestTemplate: DataRequestTemplate;
   public organization: Organization;
+  public auth: Auth;
 
   constructor({ apiKey, token }: { apiKey: string; token: string }) {
     if (!apiKey && !token) throw new Error('No token found');
@@ -18,5 +20,6 @@ export class Gateway {
     this.pda = new PDA(this.sdk);
     this.dataRequestTemplate = new DataRequestTemplate(this.sdk);
     this.organization = new Organization(this.sdk);
+    this.auth = new Auth(this.sdk);
   }
 }
diff --git a/src/auth/auth.ts b/src/auth/auth.ts
new file mode 100644
index 0000000..d4b7f16
--- /dev/null
+++ b/src/auth/auth.ts
@@ -0,0 +1,189 @@
+import { AddWalletConfirmationInput, Sdk } from '../../.mesh';
+import { AuthType, Chain } from '../types';
+import { errorHandler } from '../utils/errorHandler';
+
+export class Auth {
+  private sdk: Sdk;
+
+  constructor(sdk: Sdk) {
+    this.sdk = sdk;
+  }
+
+  /**
+   * The function checks the availability of a username by making a async query to the SDK.
+   * @param {string} username - The `username` parameter is a string that represents the username that
+   * needs to be checked for availability.
+   * @returns the result of the `checkUsernameAvailability` method, is a boolean
+   */
+  async checkUsernameAvailability(username: string) {
+    try {
+      return (await this.sdk.checkUsernameAvailability_query({ username }))
+        .checkUsernameAvailability;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `addEmail` is an asynchronous function that adds an email to a mutation using the
+   * SDK.
+   * @param {string} email - The `email` parameter is a string that represents the email address that
+   * needs to be added.
+   * @returns The addEmail function is returning the result code and email
+   */
+  async addEmail(email: string) {
+    try {
+      return (await this.sdk.addEmail_mutation({ input: { email } })).addEmail;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `addEmailConfirmation` takes an email and code as input, and calls a mutation to add
+   * email confirmation.
+   * @param {string} email: a string representing the email address to be confirmed
+   * @param {number} code : a 6 digit code representing that was sent
+   * @returns the result of the `addEmailConfirmation` method call, is the logged in user.
+   */
+  async addEmailConfirmation(email: string, code: number) {
+    try {
+      return (
+        await this.sdk.addEmailConfirmation_mutation({
+          input: { code, email },
+        })
+      ).addEmailConfirmation;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `addWallet` takes an wallet and optional chain as input.
+   * @param {string} wallet: a string representing the wallet
+   * @param {Chain} chain : a chain optional of type Chain
+   * @returns the result of the `addWallet` method call, is a message which will be used to confirm wallet.
+   */
+  async addWallet(wallet: string, chain?: Chain) {
+    try {
+      return (await this.sdk.addWallet_mutation({ input: { wallet, chain } }))
+        .addWallet;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `addWalletConfirmation` takes an walletConfirmationInput input, and calls a mutation to add
+   * wallet confirmation.
+   * @param {AddWalletConfirmationInput} walletConfirmationInput: walletConfirmationInput of type AddWalletConfirmationInput
+   * @returns the result of the `addWalletConfirmation` method call, is the logged in user.
+   */
+  async addWalletConfirmation(
+    walletConfirmationInput: AddWalletConfirmationInput,
+  ) {
+    try {
+      return await this.sdk.addWalletConfirmation_mutation({
+        input: walletConfirmationInput,
+      });
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `createWalletNounce` takes an wallet and optional chain as input
+   * @param {string} wallet: a string representing the wallet
+   * @param {Chain} chain : a chain optional of type Chain
+   * @returns the result of the `createWalletNounce` method call, is a message which will be used to confirm wallet.
+   */
+  async createWalletNonce(wallet: string, chain?: Chain) {
+    try {
+      return (
+        await this.sdk.createWalletNonce_mutation({ input: { wallet, chain } })
+      ).createWalletNonce;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `deleteAccount` takes an id to soft delete the account
+   * @param {string} id: a string representing the user id
+   * @returns the result of the `deleteAccount` method call,returning the boolean | undefined if user not found
+   */
+  async deleteAccount(id: string) {
+    try {
+      return (await this.sdk.deleteAccount_mutation({ id })).deleteAccount;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `loginEmail` takes an email and code as input verifies it and gives user details
+   * @param {string} email: a string representing the email
+   * @param {number} code: a number representing the verification code
+   * @returns the result of the `loginEmail` method call,returning the user if code is correct
+   */
+  async loginEmail(email: string, code: number) {
+    try {
+      return (await this.sdk.loginEmail_mutation({ input: { email, code } }))
+        .loginEmail;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `loginWallet` takes an wallet and signature as input verifies it and gives user details
+   * @param {string} wallet: a string representing the email
+   * @param {string} signature: a string representing the signature generated
+   * @returns the result of the `loginWallet` method call,returning the user if signature is correct
+   */
+  async loginWallet(wallet: string, signature: string) {
+    try {
+      return (
+        await this.sdk.loginWallet_mutation({
+          input: { wallet, signature },
+        })
+      ).loginWallet;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function `refreshToken` takes an existing refresh token to create a new one
+   * @param {string} existingRefreshToken: a string representing the existing refresh token
+   * @returns the result of the `refreshToken` method call,returning the  new refresh token and user
+   */
+  async refreshToken(existingRefreshToken: string) {
+    try {
+      return (
+        await this.sdk.refreshToken_mutation({
+          input: { refresh_token: existingRefreshToken },
+        })
+      ).refreshToken;
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+
+  /**
+   * The function unregisterAuthMethod is an asynchronous function that takes in a JSON object and an
+   * AuthType, and attempts to unregister an authentication method using the SDK.
+   * @param {string} data: a string representing either email or wallet
+   * @param {AuthType} type: a AuthType representing the type like Wallet, Email and so on
+   * @returns the result of the `this.sdk.unregisterAuthMethod_mutation` method, which is awaited.
+   */
+  async unregisterAuthMethod(data: string, type: AuthType) {
+    try {
+      return await this.sdk.unregisterAuthMethod_mutation({
+        input: { data, type },
+      });
+    } catch (error) {
+      throw new Error(errorHandler(error));
+    }
+  }
+}
diff --git a/src/types.ts b/src/types.ts
index bc021e3..610d2e2 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -32,3 +32,15 @@ export enum OrganizationRole {
   Member = 'Member',
   Owner = 'Owner',
 }
+
+export enum AuthType {
+  'EMAIL' = 'EMAIL',
+  'GOOGLE' = 'GOOGLE',
+  'HOT_WALLET' = 'HOT_WALLET',
+  'WALLET' = 'WALLET',
+}
+
+export enum Chain {
+  EVM = 'EVM',
+  SOL = 'SOL',
+}
diff --git a/test/auth.test.ts b/test/auth.test.ts
new file mode 100644
index 0000000..989c8d0
--- /dev/null
+++ b/test/auth.test.ts
@@ -0,0 +1,56 @@
+import dotenv from 'dotenv';
+import { Gateway } from '../src/Gateway';
+
+dotenv.config();
+let api: Gateway;
+const DEFAULT_TIMEOUT = 100000;
+
+beforeAll(() => {
+  api = new Gateway({
+    apiKey: process.env.API_KEY!,
+    token: process.env.BEARER_TOKEN!,
+  });
+});
+
+describe('auth test', () => {
+  it(
+    'check username availability',
+    async () => {
+      const result = await api.auth.checkUsernameAvailability('sid');
+      expect(result).toEqual(false);
+    },
+    DEFAULT_TIMEOUT,
+  );
+
+  it(
+    'add email',
+    async () => {
+      const { email, code } = await api.auth.addEmail('sid@test.com');
+      expect(email).toBe('sid@test.com');
+      expect(code).toBeDefined();
+    },
+    DEFAULT_TIMEOUT,
+  );
+
+  it(
+    'add wallet',
+    async () => {
+      const { message } = await api.auth.addWallet(
+        '0xD73e46DeBD3958F2706903A6D3644C570285EC1F',
+      );
+      expect(message.length).toBeDefined();
+    },
+    DEFAULT_TIMEOUT,
+  );
+
+  it(
+    'create wallet nounce',
+    async () => {
+      const { message } = await api.auth.createWalletNonce(
+        '0xCf084430Fc2CfAd8E81716aEdeBBE4458866D239',
+      );
+      expect(message.length).toBeDefined();
+    },
+    DEFAULT_TIMEOUT,
+  );
+});