diff --git a/src/base/index.ts b/src/base/index.ts
index c3af042..f34d2d0 100644
--- a/src/base/index.ts
+++ b/src/base/index.ts
@@ -1,6 +1,26 @@
-import { PersonaAnalysisConfig, RequestInit } from '../types';
+import {
+  PersonaAnalysisConfig,
+  RequestInit,
+  ResponseError as ResponseErrorType,
+  ResponseErrorTitle,
+  ResponseErrorStatus,
+} from '../types';
 import { isWalletAddressValid, areWalletAddressesValid } from '../utils';
 
+export class ResponseError implements ResponseErrorType {
+  type: string;
+  title: ResponseErrorTitle;
+  status: ResponseErrorStatus;
+  description?: string;
+
+  constructor(responseError: ResponseErrorType) {
+    this.type = responseError.type;
+    this.title = responseError.title;
+    this.status = responseError.status;
+    this.description = responseError.description;
+  }
+}
+
 export abstract class Base {
   private apiKey: string;
   private baseUrl: string;
@@ -10,7 +30,31 @@ export abstract class Base {
     this.baseUrl = config.baseUrl || 'https://api.persona.staging.cookie3.co';
   }
 
-  protected async request<T>(endpoint: string, options: RequestInit): Promise<T> {
+  private handleError(error: Error): ResponseErrorType {
+    try {
+      const { type, title, status, description }: ResponseErrorType = JSON.parse(error.message);
+
+      return new ResponseError({
+        type,
+        title,
+        status,
+        description,
+      });
+    } catch (e) {
+      // If the error message is not a valid JSON string, return a default error object
+      return new ResponseError({
+        type: 'https://httpstatuses.com/500',
+        title: 'Internal Server Error',
+        status: 500,
+        description: 'An internal server error occurred',
+      });
+    }
+  }
+
+  protected async request<T>(
+    endpoint: string,
+    options: RequestInit,
+  ): Promise<T | ResponseErrorType> {
     const url = `${this.baseUrl}${endpoint}`;
     const body = JSON.parse(options.body);
     const walletAddress = body.walletAddress;
@@ -25,16 +69,32 @@ export abstract class Base {
       headers,
     };
 
-    const validateWalletAddresses = Promise.resolve(
-      !!walletAddress ? isWalletAddressValid(walletAddress) : areWalletAddressesValid(body),
-    );
-
-    const areValid = await validateWalletAddresses;
-    return areValid
-      ? fetch(url, config)
-          .then((response) => response.text())
-          .then((result) => result as T)
-          .catch((error) => error)
-      : 'incorrect wallet address, please ensure that any wallet address you provide is correct';
+    const validateWalletAddresses = !!walletAddress
+      ? isWalletAddressValid(walletAddress)
+      : areWalletAddressesValid(body);
+
+    const areWalletsValid = validateWalletAddresses;
+
+    if (!areWalletsValid) {
+      return new ResponseError({
+        type: 'https://httpstatuses.com/422',
+        title: 'Unprocessable Entity',
+        status: 422,
+        description:
+          'incorrect wallet address, please ensure that any wallet address you provide is correct',
+      });
+    }
+
+    try {
+      const response = await fetch(url, config);
+
+      if (response.status === 401) {
+        throw new Error(JSON.stringify(await response.json()));
+      }
+
+      return response.json() as T;
+    } catch (error: any) {
+      return this.handleError(error);
+    }
   }
 }
diff --git a/src/index.ts b/src/index.ts
index c5f8899..e4d33c0 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,3 +1,11 @@
-import PersonaAnalysis from './personaAnalysis';
+import { PersonaAnalysis } from './personaAnalysis';
+import { ResponseError } from './base';
+import { isWalletAddressValid, areWalletAddressesValid, isResponseError } from './utils';
 
-export default PersonaAnalysis;
+export {
+  PersonaAnalysis,
+  ResponseError,
+  isWalletAddressValid,
+  areWalletAddressesValid,
+  isResponseError,
+};
diff --git a/src/personaAnalysis/index.ts b/src/personaAnalysis/index.ts
index 016b59f..f2d9ffe 100644
--- a/src/personaAnalysis/index.ts
+++ b/src/personaAnalysis/index.ts
@@ -1,8 +1,8 @@
 import { Base } from '../base';
 import { PersonaAnalysisStatus, HttpMethod, WalletsForPersona, ResponseError } from '../types';
 
-export default class PersonaAnalysis extends Base {
-  // Returns information if provided wallet address meet rules for given persona
+export class PersonaAnalysis extends Base {
+  //Returns information if provided wallet address meet rules for given persona
   isPersonaMatched(
     walletAddress: string,
     personaId: string,
@@ -12,7 +12,7 @@ export default class PersonaAnalysis extends Base {
       body: JSON.stringify({ walletAddress, personaId }),
     });
   }
-  // Returns wallets that meet the rules in all personas attached to account
+  //Returns wallets that meet the rules in all personas attached to account
   filterMatchedPersonas(walletAddresses: string[]): Promise<WalletsForPersona | ResponseError> {
     return this.request('/personaAnalysis/personaArray', {
       method: HttpMethod.POST,
diff --git a/src/types.ts b/src/types.ts
index 0bfd541..548c73d 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -40,13 +40,18 @@ interface WalletsForPersona {
   walletsForPersona: PersonaWallet[];
 }
 
-type ResponseErrorTitle = 'Unauthorized' | 'Too Many Requests';
-type ResponseErrorStatus = 401 | 429;
+type ResponseErrorTitle =
+  | 'Unauthorized'
+  | 'Too Many Requests'
+  | 'Unprocessable Entity'
+  | 'Internal Server Error';
+type ResponseErrorStatus = 401 | 422 | 429 | 500;
 
 interface ResponseError {
   type: string;
   title: ResponseErrorTitle;
   status: ResponseErrorStatus;
+  description?: string;
 }
 
 export type {
@@ -55,6 +60,8 @@ export type {
   PersonaAnalysisStatus,
   WalletsForPersona,
   ResponseError,
+  ResponseErrorTitle,
+  ResponseErrorStatus,
 };
 
 export { HttpMethod };
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 5cc6f35..6e0b21b 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -1,3 +1,10 @@
+import { ResponseError } from '../base';
+import {
+  ResponseError as ResponseErrorType,
+  PersonaAnalysisStatus,
+  WalletsForPersona,
+} from '../types';
+
 export const isWalletAddressValid = (walletAddress: string) => {
   const regex = new RegExp(/^0x[a-fA-F0-9]{40}$/);
 
@@ -6,3 +13,7 @@ export const isWalletAddressValid = (walletAddress: string) => {
 
 export const areWalletAddressesValid = (walletAddresses: string[]) =>
   !walletAddresses.find((walletAddress) => !isWalletAddressValid(walletAddress));
+
+export const isResponseError = (
+  response: ResponseErrorType | PersonaAnalysisStatus | WalletsForPersona,
+): response is ResponseError => response instanceof ResponseError;
diff --git a/tsconfig.json b/tsconfig.json
index b607595..f96e7da 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,7 +7,8 @@
     "outDir": "./dist",
     "baseUrl": "./",
     "incremental": true,
-    "allowSyntheticDefaultImports": true
+    "allowSyntheticDefaultImports": true,
+    "moduleResolution": "node"
   },
   "include": ["src/**/*"],
   "exclude": ["node_modules"]