diff --git a/package.json b/package.json
index b01191d1..9f8f7038 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,8 @@
     "bufferutil": "4.0.7",
     "reconnecting-websocket": "4.4.0",
     "utf-8-validate": "6.0.3",
-    "ws": "8.13.0"
+    "ws": "8.13.0",
+    "zod": "3.21.4"
   },
   "description": "Coinbase Pro API for Node.js, written in TypeScript and covered by tests.",
   "devDependencies": {
diff --git a/src/transfer/TransferAPI.ts b/src/transfer/TransferAPI.ts
index 3a34e994..4987982c 100644
--- a/src/transfer/TransferAPI.ts
+++ b/src/transfer/TransferAPI.ts
@@ -1,32 +1,8 @@
+import {z} from 'zod';
 import {AxiosInstance} from 'axios';
-import {ISO_8601_MS_UTC, PaginatedData, Pagination} from '../payload/common';
+import {PaginatedData, Pagination} from '../payload/common';
 import querystring from 'querystring';
 
-export interface TransferInformation {
-  account_id: string;
-  amount: string;
-  canceled_at?: ISO_8601_MS_UTC;
-  completed_at?: ISO_8601_MS_UTC;
-  created_at: ISO_8601_MS_UTC;
-  details: {
-    coinbase_account_id?: string;
-    coinbase_payment_method_id?: string;
-    coinbase_transaction_id?: string;
-    coinbase_withdrawal_id?: string;
-    crypto_address?: string;
-    crypto_transaction_hash?: string;
-    crypto_transaction_id?: string;
-    destination_tag: string;
-    destination_tag_name?: string;
-    sent_to_address?: string;
-  };
-  id: string;
-  processed_at?: ISO_8601_MS_UTC;
-  type: string;
-  user_id: string;
-  user_nonce?: string;
-}
-
 export enum TransferType {
   DEPOSIT = 'deposit',
   INTERNAL_DEPOSIT = 'internal_deposit',
@@ -34,6 +10,37 @@ export enum TransferType {
   WITHDRAW = 'withdraw',
 }
 
+export const TransferInformationSchema = z.object({
+  account_id: z.string(),
+  amount: z.string(),
+  canceled_at: z.string().nullable().or(z.undefined()),
+  completed_at: z.string().nullable().or(z.undefined()),
+  created_at: z.string(),
+  currency: z.string().nullable().or(z.undefined()),
+  details: z.object({
+    coinbase_account_id: z.string().nullable().or(z.undefined()),
+    coinbase_payment_method_id: z.string().nullable().or(z.undefined()),
+    coinbase_transaction_id: z.string().nullable().or(z.undefined()),
+    coinbase_withdrawal_id: z.string().nullable().or(z.undefined()),
+    crypto_address: z.string().nullable().or(z.undefined()),
+    crypto_transaction_hash: z.string().nullable().or(z.undefined()),
+    crypto_transaction_id: z.string().nullable().or(z.undefined()),
+    destination_tag: z.string().nullable().or(z.undefined()),
+    destination_tag_name: z.string().nullable().or(z.undefined()),
+    sent_to_address: z.string().nullable().or(z.undefined()),
+    tx_service_transaction_id: z.string().optional(),
+  }),
+  id: z.string(),
+  idem: z.string().nullable().or(z.undefined()),
+  processed_at: z.string().nullable().or(z.undefined()),
+  profile_id: z.string().nullable().or(z.undefined()),
+  type: z.nativeEnum(TransferType),
+  user_id: z.string(),
+  user_nonce: z.string().nullable().or(z.undefined()),
+});
+
+export type TransferInformation = z.infer<typeof TransferInformationSchema>;
+
 export class TransferAPI {
   static readonly URL = {
     TRANSFERS: `/transfers`,
@@ -67,6 +74,9 @@ export class TransferAPI {
       params,
       paramsSerializer: querystring.stringify,
     });
+
+    z.array(TransferInformationSchema).parse(response.data);
+
     return {
       data: response.data,
       pagination: {
@@ -85,6 +95,6 @@ export class TransferAPI {
   async getTransfer(transferId: string): Promise<TransferInformation> {
     const resource = `${TransferAPI.URL.TRANSFERS}/${transferId}`;
     const response = await this.apiClient.get<TransferInformation>(resource);
-    return response.data;
+    return TransferInformationSchema.parse(response.data);
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 9148535b..8de5ece6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2850,3 +2850,8 @@ yocto-queue@^0.1.0:
   version "0.1.0"
   resolved "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz#0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b"
   integrity sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==
+
+zod@3.21.4:
+  version "3.21.4"
+  resolved "https://registry.npmjs.org/zod/-/zod-3.21.4.tgz#10882231d992519f0a10b5dd58a38c9dabbb64db"
+  integrity sha512-m46AKbrzKVzOzs/DZgVnG5H55N1sv1M8qZU3A8RIKbs3mrACDNeIOeilDymVb2HdmP8uwshOCF4uJ8uM9rCqJw==