diff --git a/src/api/account/AccountService.ts b/src/api/account/AccountService.ts
index 0db08d8..fe7c0e0 100644
--- a/src/api/account/AccountService.ts
+++ b/src/api/account/AccountService.ts
@@ -16,7 +16,7 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of account (stake address) IDs
      */
-    getAccountList(options?: Options): Promise<any>;
+    getAccountList(options?: Options): Promise<Response>;
 
     /**
      * Account Information
@@ -30,7 +30,7 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of account information
      */
-    getAccountInformation(stakeAddresses: string[], options?: Options): Promise<any>;
+    getAccountInformation(stakeAddresses: string[], options?: Options): Promise<Response>;
 
     /**
      * Account UTxOs
@@ -44,7 +44,7 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of account UTxOs associated with stake address
      */
-    getAccountUTxOs(stakeAddress: string, options?: Options): Promise<any>;
+    getAccountUTxOs(stakeAddress: string, options?: Options): Promise<Response>;
 
     /**
      * Account Information (Cached)
@@ -58,7 +58,7 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of account information
      */
-    getAccountInformationCached(stakeAddresses: string[], options?: Options): Promise<any>;
+    getAccountInformationCached(stakeAddresses: string[], options?: Options): Promise<Response>;
 
     /**
      * Account Rewards
@@ -73,7 +73,7 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of reward history information
      */
-    getAccountRewards(stakeAddresses: string[], epochNo?: number, options?: Options): Promise<any>;
+    getAccountRewards(stakeAddresses: string[], epochNo?: number, options?: Options): Promise<Response>;
 
     /**
      * Account Updates
@@ -87,7 +87,7 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of account updates information
      */
-    getAccountUpdates(stakeAddresses: string[], options?: Options): Promise<any>;
+    getAccountUpdates(stakeAddresses: string[], options?: Options): Promise<Response>;
 
     /**
      * Account Addresses
@@ -103,7 +103,7 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of payment addresses
      */
-    getAccountAddresses(stakeAddresses: string[], firstOnly?: boolean, empty?: boolean, options?: Options): Promise<any>;
+    getAccountAddresses(stakeAddresses: string[], firstOnly?: boolean, empty?: boolean, options?: Options): Promise<Response>;
 
     /**
      * Account Assets
@@ -117,7 +117,7 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of assets owned by account
      */
-    getAccountAssets(stakeAddresses: string[], options?: Options): Promise<any>;
+    getAccountAssets(stakeAddresses: string[], options?: Options): Promise<Response>;
 
     /**
      * Account History
@@ -132,5 +132,5 @@ export interface AccountService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of active stake values per epoch
      */
-    getAccountHistory(stakeAddresses: string[], epochNo?: number, options?: Options): Promise<any>;
+    getAccountHistory(stakeAddresses: string[], epochNo?: number, options?: Options): Promise<Response>;
 }
\ No newline at end of file
diff --git a/src/api/account/impl/AccountServiceImpl.ts b/src/api/account/impl/AccountServiceImpl.ts
index cecc433..72c3d62 100644
--- a/src/api/account/impl/AccountServiceImpl.ts
+++ b/src/api/account/impl/AccountServiceImpl.ts
@@ -8,7 +8,7 @@ import {KoiosHttpError} from "../../base/Errors";
  */
 export class AccountServiceImpl extends BaseService implements AccountService {
 
-    getAccountList(options?: Options): Promise<any> {
+    getAccountList(options?: Options): Promise<Response> {
         return this.get(`account_list${this.optionsToQueryParams(options)}`)
             .then(async response => {
                 if (!response.ok) {
@@ -18,7 +18,7 @@ export class AccountServiceImpl extends BaseService implements AccountService {
             })
     }
 
-    getAccountInformation(stakeAddresses: string[], options?: Options): Promise<any> {
+    getAccountInformation(stakeAddresses: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -31,7 +31,7 @@ export class AccountServiceImpl extends BaseService implements AccountService {
             })
     }
 
-    getAccountUTxOs(stakeAddress: string, options?: Options): Promise<any> {
+    getAccountUTxOs(stakeAddress: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -45,7 +45,7 @@ export class AccountServiceImpl extends BaseService implements AccountService {
             })
     }
 
-    getAccountInformationCached(stakeAddresses: string[], options?: Options): Promise<any> {
+    getAccountInformationCached(stakeAddresses: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -58,7 +58,7 @@ export class AccountServiceImpl extends BaseService implements AccountService {
             })
     }
 
-    getAccountRewards(stakeAddresses: string[], epochNo?: number, options?: Options): Promise<any> {
+    getAccountRewards(stakeAddresses: string[], epochNo?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -71,7 +71,7 @@ export class AccountServiceImpl extends BaseService implements AccountService {
             })
     }
 
-    getAccountUpdates(stakeAddresses: string[], options?: Options): Promise<any> {
+    getAccountUpdates(stakeAddresses: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -85,7 +85,7 @@ export class AccountServiceImpl extends BaseService implements AccountService {
     }
 
 
-    getAccountAddresses(stakeAddresses: string[], firstOnly?: boolean, empty?: boolean, options?: Options): Promise<any> {
+    getAccountAddresses(stakeAddresses: string[], firstOnly?: boolean, empty?: boolean, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -105,7 +105,7 @@ export class AccountServiceImpl extends BaseService implements AccountService {
             })
     }
 
-    getAccountAssets(stakeAddresses: string[], options?: Options): Promise<any> {
+    getAccountAssets(stakeAddresses: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -118,7 +118,7 @@ export class AccountServiceImpl extends BaseService implements AccountService {
             })
     }
 
-    getAccountHistory(stakeAddresses: string[], epochNo?: number, options?: Options): Promise<any> {
+    getAccountHistory(stakeAddresses: string[], epochNo?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
diff --git a/src/api/address/AddressService.ts b/src/api/address/AddressService.ts
index 10bc289..1f8af30 100644
--- a/src/api/address/AddressService.ts
+++ b/src/api/address/AddressService.ts
@@ -17,7 +17,7 @@ export interface AddressService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of address information
      */
-    getAddressInformation(addresses: string[], options?: Options): Promise<any>;
+    getAddressInformation(addresses: string[], options?: Options): Promise<Response>;
 
     /**
      * Address Transactions
@@ -32,7 +32,7 @@ export interface AddressService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of transaction hashes
      */
-    getAddressTransactions(addresses: string[], afterBlockHeight?: number, options?: Options): Promise<any>;
+    getAddressTransactions(addresses: string[], afterBlockHeight?: number, options?: Options): Promise<Response>;
 
     /**
      * UTxOs from payment credentials
@@ -46,7 +46,7 @@ export interface AddressService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of UTxOs with balances
      */
-    getCredentialUTxOs(paymentCredentials: string[], options?: Options): Promise<any>;
+    getCredentialUTxOs(paymentCredentials: string[], options?: Options): Promise<Response>;
 
     /**
      * Address Assets
@@ -60,7 +60,7 @@ export interface AddressService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of address-owned assets
      */
-    getAddressAssets(addresses: string[], options?: Options): Promise<any>;
+    getAddressAssets(addresses: string[], options?: Options): Promise<Response>;
 
     /**
      * Transactions from payment credentials
@@ -75,5 +75,5 @@ export interface AddressService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of transaction hashes
      */
-    getCredentialsTxs(paymentCredentials: string[], afterBlockHeight?: number, options?: Options): Promise<any>;
+    getCredentialsTxs(paymentCredentials: string[], afterBlockHeight?: number, options?: Options): Promise<Response>;
 }
\ No newline at end of file
diff --git a/src/api/address/impl/AddressServiceImpl.ts b/src/api/address/impl/AddressServiceImpl.ts
index 28d101d..7e3ceaf 100644
--- a/src/api/address/impl/AddressServiceImpl.ts
+++ b/src/api/address/impl/AddressServiceImpl.ts
@@ -8,7 +8,7 @@ import {KoiosHttpError} from "../../base/Errors";
  */
 export class AddressServiceImpl extends BaseService implements AddressService {
 
-    getAddressInformation(addresses: string[], options?: Options): Promise<any> {
+    getAddressInformation(addresses: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -21,7 +21,7 @@ export class AddressServiceImpl extends BaseService implements AddressService {
             })
     }
 
-    getAddressTransactions(addresses: string[], afterBlockHeight?: number, options?: Options): Promise<any> {
+    getAddressTransactions(addresses: string[], afterBlockHeight?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -34,7 +34,7 @@ export class AddressServiceImpl extends BaseService implements AddressService {
             })
     }
 
-    getCredentialUTxOs(paymentCredentials: string[], options?: Options): Promise<any> {
+    getCredentialUTxOs(paymentCredentials: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -47,7 +47,7 @@ export class AddressServiceImpl extends BaseService implements AddressService {
             })
     }
 
-    getAddressAssets(addresses: string[], options?: Options): Promise<any> {
+    getAddressAssets(addresses: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -60,7 +60,7 @@ export class AddressServiceImpl extends BaseService implements AddressService {
             })
     }
 
-    getCredentialsTxs(paymentCredentials: string[], afterBlockHeight?: number, options?: Options): Promise<any> {
+    getCredentialsTxs(paymentCredentials: string[], afterBlockHeight?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
diff --git a/src/api/asset/AssetService.ts b/src/api/asset/AssetService.ts
index d24bf96..0382ed7 100644
--- a/src/api/asset/AssetService.ts
+++ b/src/api/asset/AssetService.ts
@@ -16,7 +16,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of policy IDs and asset names
      */
-    getAssetList(options?: Options): Promise<any>;
+    getAssetList(options?: Options): Promise<Response>;
 
     /**
      * Asset Token Registry
@@ -29,7 +29,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of token registry information for each asset
      */
-    getAssetTokenRegistry(options?: Options): Promise<any>;
+    getAssetTokenRegistry(options?: Options): Promise<Response>;
 
     /**
      * Asset Addresses
@@ -44,7 +44,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of payment addresses holding the given token (including balances)
      */
-    getAssetAddresses(assetPolicy: string, assetName?: string, options?: Options): Promise<any>;
+    getAssetAddresses(assetPolicy: string, assetName?: string, options?: Options): Promise<Response>;
 
     /**
      * NFT Address
@@ -59,7 +59,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Payment addresses currently holding the given NFT
      */
-    getNFTAddress(assetPolicy: string, assetName?: string, options?: Options): Promise<any>;
+    getNFTAddress(assetPolicy: string, assetName?: string, options?: Options): Promise<Response>;
 
     /**
      * Asset Information
@@ -74,7 +74,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of detailed asset information
      */
-    getAssetInformation(assetPolicy: string, assetName?: string, options?: Options): Promise<any>;
+    getAssetInformation(assetPolicy: string, assetName?: string, options?: Options): Promise<Response>;
 
     /**
      * Asset Information (Bulk)
@@ -88,7 +88,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of detailed asset information
      */
-    getAssetInformationBulk(assets: [string, string][], options?: Options): Promise<any>;
+    getAssetInformationBulk(assets: [string, string][], options?: Options): Promise<Response>;
 
     /**
      * Asset History
@@ -103,7 +103,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of asset mint/burn history
      */
-    getAssetHistory(assetPolicy: string, assetName?: string, options?: Options): Promise<any>;
+    getAssetHistory(assetPolicy: string, assetName?: string, options?: Options): Promise<Response>;
 
     /**
      * Policy Asset Address List
@@ -117,7 +117,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of asset names and payment addresses for the given policy (including balances)
      */
-    getPolicyAssetAddressList(assetPolicy: string, options?: Options): Promise<any>;
+    getPolicyAssetAddressList(assetPolicy: string, options?: Options): Promise<Response>;
 
     /**
      * Policy Asset Information
@@ -131,7 +131,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of detailed information of assets under the same policy
      */
-    getPolicyAssetInformation(assetPolicy: string, options?: Options): Promise<any>;
+    getPolicyAssetInformation(assetPolicy: string, options?: Options): Promise<Response>;
 
     /**
      * Policy Asset List
@@ -145,7 +145,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of detailed information of assets under the same policy
      */
-    getPolicyAssetList(assetPolicy: string, options?: Options): Promise<any>;
+    getPolicyAssetList(assetPolicy: string, options?: Options): Promise<Response>;
 
     /**
      * Asset Summary
@@ -160,7 +160,7 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of asset summary information
      */
-    getAssetSummary(assetPolicy: string, assetName?: string, options?: Options): Promise<any>;
+    getAssetSummary(assetPolicy: string, assetName?: string, options?: Options): Promise<Response>;
 
     /**
      * Asset Transactions
@@ -177,5 +177,5 @@ export interface AssetService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of Tx hashes that included the given asset
      */
-    getAssetTransactions(assetPolicy: string, assetName?: string, afterBlockHeight?: number, history?: boolean, options?: Options): Promise<any>;
+    getAssetTransactions(assetPolicy: string, assetName?: string, afterBlockHeight?: number, history?: boolean, options?: Options): Promise<Response>;
 }
\ No newline at end of file
diff --git a/src/api/asset/impl/AssetServiceImpl.ts b/src/api/asset/impl/AssetServiceImpl.ts
index b846339..af0935f 100644
--- a/src/api/asset/impl/AssetServiceImpl.ts
+++ b/src/api/asset/impl/AssetServiceImpl.ts
@@ -2,13 +2,14 @@ import {BaseService} from "../../base/BaseService";
 import {AssetService} from "../AssetService";
 import {Options} from "../../../factory/options/Options";
 import {KoiosHttpError} from "../../base/Errors";
+import {Response} from "node-fetch";
 
 /**
  * Address Service Implementation
  */
 export class AssetServiceImpl extends BaseService implements AssetService {
 
-    getAssetList(options?: Options): Promise<any> {
+    getAssetList(options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -21,7 +22,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getAssetTokenRegistry(options?: Options): Promise<any> {
+    getAssetTokenRegistry(options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -34,7 +35,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getAssetAddresses(assetPolicy: string, assetName?: string, options?: Options): Promise<any> {
+    getAssetAddresses(assetPolicy: string, assetName?: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -51,7 +52,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getNFTAddress(assetPolicy: string, assetName?: string, options?: Options): Promise<any> {
+    getNFTAddress(assetPolicy: string, assetName?: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -68,7 +69,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getAssetInformation(assetPolicy: string, assetName?: string, options?: Options): Promise<any> {
+    getAssetInformation(assetPolicy: string, assetName?: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -85,7 +86,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getAssetInformationBulk(assets: [string, string][], options?: Options): Promise<any> {
+    getAssetInformationBulk(assets: [string, string][], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -98,7 +99,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getAssetHistory(assetPolicy: string, assetName?: string, options?: Options): Promise<any> {
+    getAssetHistory(assetPolicy: string, assetName?: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -115,7 +116,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getPolicyAssetAddressList(assetPolicy: string, options?: Options): Promise<any> {
+    getPolicyAssetAddressList(assetPolicy: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -129,7 +130,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getPolicyAssetInformation(assetPolicy: string, options?: Options): Promise<any> {
+    getPolicyAssetInformation(assetPolicy: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -143,7 +144,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getPolicyAssetList(assetPolicy: string, options?: Options): Promise<any> {
+    getPolicyAssetList(assetPolicy: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -157,7 +158,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getAssetSummary(assetPolicy: string, assetName?: string, options?: Options): Promise<any> {
+    getAssetSummary(assetPolicy: string, assetName?: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -174,7 +175,7 @@ export class AssetServiceImpl extends BaseService implements AssetService {
             })
     }
 
-    getAssetTransactions(assetPolicy: string, assetName?: string, afterBlockHeight?: number, history?: boolean, options?: Options): Promise<any> {
+    getAssetTransactions(assetPolicy: string, assetName?: string, afterBlockHeight?: number, history?: boolean, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
diff --git a/src/api/base/BaseService.ts b/src/api/base/BaseService.ts
index e3879f8..cc2a48a 100644
--- a/src/api/base/BaseService.ts
+++ b/src/api/base/BaseService.ts
@@ -36,10 +36,10 @@ export class BaseService {
         return maxRetries >= 1 ? maxRetries : this.retriesCount;
     }
 
-    public get(url: string): Promise<any> {
+    public get(url: string): Promise<Response> {
         let params: RequestInit = {
             headers: {
-                'accept': 'application/json',
+                'Accept': 'application/json',
                 'Content-Type': 'application/json'
             },
             method: "GET"
@@ -48,7 +48,7 @@ export class BaseService {
         return this.execute(this.baseUrl + url, params,{ timeoutInSeconds: this.getReadTimeoutSec(), tries: this.getMaxRetries() });
     }
 
-    public post(url: string, body: any): Promise<any> {
+    public post(url: string, body: any): Promise<Response> {
 
         function resolveContentType(body: any): string {
             return (body && (body.constructor === String || body.constructor === Uint8Array)) ? 'application/cbor' : 'application/json'
diff --git a/src/api/block/BlockService.ts b/src/api/block/BlockService.ts
index 84a93ca..89bf2b8 100644
--- a/src/api/block/BlockService.ts
+++ b/src/api/block/BlockService.ts
@@ -16,7 +16,7 @@ export interface BlockService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of block information
      */
-    getBlockList(options?: Options): Promise<any>;
+    getBlockList(options?: Options): Promise<Response>;
 
     /**
      * Block Information
@@ -30,7 +30,7 @@ export interface BlockService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of detailed block information
      */
-    getBlockInformation(blockHashes: string[], options?: Options): Promise<any>;
+    getBlockInformation(blockHashes: string[], options?: Options): Promise<Response>;
 
     /**
      * Block Transactions
@@ -44,5 +44,5 @@ export interface BlockService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of transactions hashes
      */
-    getBlockTransactions(blockHashes: string[], options?: Options): Promise<any>;
+    getBlockTransactions(blockHashes: string[], options?: Options): Promise<Response>;
 }
\ No newline at end of file
diff --git a/src/api/block/impl/BlockServiceImpl.ts b/src/api/block/impl/BlockServiceImpl.ts
index 0832f8f..cbcab0a 100644
--- a/src/api/block/impl/BlockServiceImpl.ts
+++ b/src/api/block/impl/BlockServiceImpl.ts
@@ -8,7 +8,7 @@ import {KoiosHttpError} from "../../base/Errors";
  */
 export class BlockServiceImpl extends BaseService implements BlockService {
 
-    getBlockList(options?: Options): Promise<any> {
+    getBlockList(options?: Options): Promise<Response> {
         return this.get(`blocks${this.optionsToQueryParams(options)}`)
             .then(async response => {
                 if (!response.ok) {
@@ -18,7 +18,7 @@ export class BlockServiceImpl extends BaseService implements BlockService {
             })
     }
 
-    getBlockInformation(blockHashes: string[], options?: Options): Promise<any> {
+    getBlockInformation(blockHashes: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -31,7 +31,7 @@ export class BlockServiceImpl extends BaseService implements BlockService {
             })
     }
 
-    getBlockTransactions(blockHashes: string[], options?: Options): Promise<any> {
+    getBlockTransactions(blockHashes: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
diff --git a/src/api/epoch/EpochService.ts b/src/api/epoch/EpochService.ts
index f3fe826..f983303 100644
--- a/src/api/epoch/EpochService.ts
+++ b/src/api/epoch/EpochService.ts
@@ -18,7 +18,7 @@ export interface EpochService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of detailed summary for each epoch
      */
-    getEpochInformation(epochNo?: number, includeNextEpoch?: boolean, options?: Options): Promise<any>;
+    getEpochInformation(epochNo?: number, includeNextEpoch?: boolean, options?: Options): Promise<Response>;
 
     /**
      * Epoch's Protocol Parameters
@@ -32,7 +32,7 @@ export interface EpochService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of protocol parameters for each epoch
      */
-    getEpochProtocolParameters(epochNo?: number, options?: Options): Promise<any>;
+    getEpochProtocolParameters(epochNo?: number, options?: Options): Promise<Response>;
 
     /**
      * Epoch's Block Protocols
@@ -46,5 +46,5 @@ export interface EpochService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of distinct block protocol versions counts in epoch
      */
-    getEpochBlockProtocols(epochNo?: number, options?: Options): Promise<any>;
+    getEpochBlockProtocols(epochNo?: number, options?: Options): Promise<Response>;
 }
diff --git a/src/api/epoch/impl/EpochServiceImpl.ts b/src/api/epoch/impl/EpochServiceImpl.ts
index b188020..ecb3173 100644
--- a/src/api/epoch/impl/EpochServiceImpl.ts
+++ b/src/api/epoch/impl/EpochServiceImpl.ts
@@ -8,7 +8,7 @@ import {KoiosHttpError} from "../../base/Errors";
  */
 export class EpochServiceImpl extends BaseService implements EpochService {
 
-    getEpochInformation(epochNo?: number, includeNextEpoch?: boolean, options?: Options): Promise<any> {
+    getEpochInformation(epochNo?: number, includeNextEpoch?: boolean, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -27,7 +27,7 @@ export class EpochServiceImpl extends BaseService implements EpochService {
             })
     }
 
-    getEpochProtocolParameters(epochNo?: number, options?: Options): Promise<any> {
+    getEpochProtocolParameters(epochNo?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -43,7 +43,7 @@ export class EpochServiceImpl extends BaseService implements EpochService {
             })
     }
 
-    getEpochBlockProtocols(epochNo?: number, options?: Options): Promise<any> {
+    getEpochBlockProtocols(epochNo?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
diff --git a/src/api/network/NetworkService.ts b/src/api/network/NetworkService.ts
index 40ce46a..9c93a16 100644
--- a/src/api/network/NetworkService.ts
+++ b/src/api/network/NetworkService.ts
@@ -13,7 +13,7 @@ export interface NetworkService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of block summary (limit+paginated)
      */
-    getChainTip(options?: Options): Promise<any>;
+    getChainTip(options?: Options): Promise<Response>;
 
     /**
      * Get Genesis info
@@ -26,7 +26,7 @@ export interface NetworkService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of genesis parameters used to start each era on chain
      */
-    getGenesisInfo(options?: Options): Promise<any>;
+    getGenesisInfo(options?: Options): Promise<Response>;
 
     /**
      * Get historical tokenomic stats By Epoch
@@ -40,7 +40,7 @@ export interface NetworkService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of supply/reserves/utxo/fees/treasury stats
      */
-    getHistoricalTokenomicStatsByEpoch(epochNo?: number, options?: Options): Promise<any>;
+    getHistoricalTokenomicStatsByEpoch(epochNo?: number, options?: Options): Promise<Response>;
 
     /**
      * Param Update Proposals
@@ -53,5 +53,5 @@ export interface NetworkService {
      * @param options Filtering and Pagination options (optional)
      * @returns Array of unique param update proposals submitted on chain
      */
-    getParamUpdateProposals(options?: Options): Promise<any>;
+    getParamUpdateProposals(options?: Options): Promise<Response>;
 }
\ No newline at end of file
diff --git a/src/api/network/impl/NetworkServiceImpl.ts b/src/api/network/impl/NetworkServiceImpl.ts
index 61cd2bf..530d11b 100644
--- a/src/api/network/impl/NetworkServiceImpl.ts
+++ b/src/api/network/impl/NetworkServiceImpl.ts
@@ -8,7 +8,7 @@ import {KoiosHttpError} from "../../base/Errors";
  */
 export class NetworkServiceImpl extends BaseService implements NetworkService {
 
-    public getChainTip(options?: Options): Promise<any> {
+    public getChainTip(options?: Options): Promise<Response> {
         return this.get(`tip${this.optionsToQueryParams(options)}`)
             .then(async response => {
                 if (!response.ok) {
@@ -18,7 +18,7 @@ export class NetworkServiceImpl extends BaseService implements NetworkService {
             })
     }
 
-    public getGenesisInfo(options?: Options): Promise<any> {
+    public getGenesisInfo(options?: Options): Promise<Response> {
         return this.get(`genesis${this.optionsToQueryParams(options)}`)
             .then(async response => {
                 if (!response.ok) {
@@ -28,7 +28,7 @@ export class NetworkServiceImpl extends BaseService implements NetworkService {
             })
     }
 
-    public getHistoricalTokenomicStatsByEpoch(epochNo?: number, options?: Options): Promise<any> {
+    public getHistoricalTokenomicStatsByEpoch(epochNo?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
diff --git a/src/api/pool/PoolService.ts b/src/api/pool/PoolService.ts
index bfcc46d..475cf2d 100644
--- a/src/api/pool/PoolService.ts
+++ b/src/api/pool/PoolService.ts
@@ -13,7 +13,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of pool IDs and tickers
      */
-    getPoolList(options?: Options): Promise<any>;
+    getPoolList(options?: Options): Promise<Response>;
 
     /**
      * Pool Information
@@ -27,7 +27,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of pool information
      */
-    getPoolInformation(poolBech32Ids: string[], options?: Options): Promise<any>;
+    getPoolInformation(poolBech32Ids: string[], options?: Options): Promise<Response>;
 
     /**
      * Pool Stake Snapshot
@@ -41,7 +41,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of pool stake information for 3 snapshots
      */
-    getPoolStakeSnapshot(poolBech32: string, options?: Options): Promise<any>;
+    getPoolStakeSnapshot(poolBech32: string, options?: Options): Promise<Response>;
 
     /**
      * Pool Delegators List
@@ -55,7 +55,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of pool delegator information
      */
-    getPoolDelegatorsList(poolBech32: string, options?: Options): Promise<any>;
+    getPoolDelegatorsList(poolBech32: string, options?: Options): Promise<Response>;
 
     /**
      * Pool Delegators History
@@ -70,7 +70,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of pool delegator information
      */
-    getPoolDelegatorsHistory(poolBech32: string, epochNo?: number, options?: Options): Promise<any>;
+    getPoolDelegatorsHistory(poolBech32: string, epochNo?: number, options?: Options): Promise<Response>;
 
     /**
      * Pool Blocks
@@ -85,7 +85,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of blocks created by pool
      */
-    getPoolBlocks(poolBech32: string, epochNo?: number, options?: Options): Promise<any>;
+    getPoolBlocks(poolBech32: string, epochNo?: number, options?: Options): Promise<Response>;
 
     /**
      * Pool Stake, Block and Reward History
@@ -100,7 +100,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of pool history information
      */
-    getPoolStakeBlockAndRewardHistory(poolBech32: string, epochNo?: number, options?: Options): Promise<any>;
+    getPoolStakeBlockAndRewardHistory(poolBech32: string, epochNo?: number, options?: Options): Promise<Response>;
 
     /**
      * Pool Updates (History)
@@ -114,7 +114,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of historical pool updates
      */
-    getPoolUpdatesHistory(poolBech32: string, options?: Options): Promise<any>;
+    getPoolUpdatesHistory(poolBech32: string, options?: Options): Promise<Response>;
 
     /**
      * Pool Relays
@@ -127,7 +127,7 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of pool relay information
      */
-    getPoolRelays(options?: Options): Promise<any>;
+    getPoolRelays(options?: Options): Promise<Response>;
 
     /**
      * Pool Metadata
@@ -141,5 +141,5 @@ export interface PoolService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of pool metadata
      */
-    getPoolMetadata(poolBech32Ids: string[], options?: Options): Promise<any>;
+    getPoolMetadata(poolBech32Ids: string[], options?: Options): Promise<Response>;
 }
\ No newline at end of file
diff --git a/src/api/pool/impl/PoolServiceImpl.ts b/src/api/pool/impl/PoolServiceImpl.ts
index 4add0a1..40735a3 100644
--- a/src/api/pool/impl/PoolServiceImpl.ts
+++ b/src/api/pool/impl/PoolServiceImpl.ts
@@ -8,7 +8,7 @@ import {KoiosHttpError} from "../../base/Errors";
  */
 export class PoolServiceImpl extends BaseService implements PoolService {
 
-    getPoolList(options?: Options): Promise<any> {
+    getPoolList(options?: Options): Promise<Response> {
         return this.get(`pool_list${this.optionsToQueryParams(options)}`)
             .then(async response => {
                 if (!response.ok) {
@@ -18,7 +18,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolInformation(poolBech32Ids: string[], options?: Options): Promise<any> {
+    getPoolInformation(poolBech32Ids: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -31,7 +31,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolStakeSnapshot(poolBech32: string, options?: Options): Promise<any> {
+    getPoolStakeSnapshot(poolBech32: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -45,7 +45,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolDelegatorsList(poolBech32: string, options?: Options): Promise<any> {
+    getPoolDelegatorsList(poolBech32: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -59,7 +59,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolDelegatorsHistory(poolBech32: string, epochNo?: number, options?: Options): Promise<any> {
+    getPoolDelegatorsHistory(poolBech32: string, epochNo?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -76,7 +76,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolBlocks(poolBech32: string, epochNo?: number, options?: Options): Promise<any> {
+    getPoolBlocks(poolBech32: string, epochNo?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -93,7 +93,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolStakeBlockAndRewardHistory(poolBech32: string, epochNo?: number, options?: Options): Promise<any> {
+    getPoolStakeBlockAndRewardHistory(poolBech32: string, epochNo?: number, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -110,7 +110,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolUpdatesHistory(poolBech32: string, options?: Options): Promise<any> {
+    getPoolUpdatesHistory(poolBech32: string, options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -124,7 +124,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolRelays(options?: Options): Promise<any> {
+    getPoolRelays(options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -137,7 +137,7 @@ export class PoolServiceImpl extends BaseService implements PoolService {
             })
     }
 
-    getPoolMetadata(poolBech32Ids: string[], options?: Options): Promise<any> {
+    getPoolMetadata(poolBech32Ids: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
diff --git a/src/api/script/ScriptService.ts b/src/api/script/ScriptService.ts
index 4b82e13..bf32641 100644
--- a/src/api/script/ScriptService.ts
+++ b/src/api/script/ScriptService.ts
@@ -13,7 +13,7 @@ export interface ScriptService {
      * @param options Filtering and Pagination options (optional)
      * @return List of native script and creation tx hash pairs
      */
-    getNativeScriptList(options?: Options): Promise<any>;
+    getNativeScriptList(options?: Options): Promise<Response>;
 
     /**
      * Plutus Script List
@@ -26,7 +26,7 @@ export interface ScriptService {
      * @param options Filtering and Pagination options (optional)
      * @return List of Plutus script and creation tx hash pairs
      */
-    getPlutusScriptList(options?: Options): Promise<any>;
+    getPlutusScriptList(options?: Options): Promise<Response>;
 
     /**
      * Script Redeemers
@@ -40,7 +40,7 @@ export interface ScriptService {
      * @param options Filtering and Pagination options (optional)
      * @return List of all redeemers for a given script hash
      */
-    getScriptRedeemers(scriptHash: string, options?: Options): Promise<any>;
+    getScriptRedeemers(scriptHash: string, options?: Options): Promise<Response>;
 
     /**
      * Datum Information
@@ -54,5 +54,5 @@ export interface ScriptService {
      * @param options Filtering and Pagination options (optional)
      * @return List of datum information for given datum hashes
      */
-    getDatumInformation(datumHashes: string[], options?: Options): Promise<any>;
+    getDatumInformation(datumHashes: string[], options?: Options): Promise<Response>;
 }
\ No newline at end of file
diff --git a/src/api/script/impl/ScriptServiceImpl.ts b/src/api/script/impl/ScriptServiceImpl.ts
index 4e594c5..46e167d 100644
--- a/src/api/script/impl/ScriptServiceImpl.ts
+++ b/src/api/script/impl/ScriptServiceImpl.ts
@@ -9,7 +9,7 @@ import {KoiosHttpError} from "../../base/Errors";
  */
 export class ScriptServiceImpl extends BaseService implements ScriptService {
 
-    getNativeScriptList(options?: Options): Promise<any> {
+    getNativeScriptList(options?: Options): Promise<Response> {
         return this.get(`native_script_list${this.optionsToQueryParams(options)}`)
             .then(async response => {
                 if (!response.ok) {
@@ -19,7 +19,7 @@ export class ScriptServiceImpl extends BaseService implements ScriptService {
             })
     }
 
-    getPlutusScriptList(options?: Options): Promise<any> {
+    getPlutusScriptList(options?: Options): Promise<Response> {
         return this.get(`plutus_script_list${this.optionsToQueryParams(options)}`)
             .then(async response => {
                 if (!response.ok) {
@@ -29,7 +29,7 @@ export class ScriptServiceImpl extends BaseService implements ScriptService {
             })
     }
 
-    getScriptRedeemers(scriptHash:string, options?:Options): Promise<any> {
+    getScriptRedeemers(scriptHash:string, options?:Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -43,7 +43,7 @@ export class ScriptServiceImpl extends BaseService implements ScriptService {
             })
     }
 
-    getDatumInformation(datumHashes: string[], options?: Options): Promise<any> {
+    getDatumInformation(datumHashes: string[], options?: Options): Promise<Response> {
         return this.post(`datum_info${this.optionsToQueryParams(options)}`, this.buildBody("_datum_hashes", datumHashes))
             .then(async response => {
                 if (!response.ok) {
diff --git a/src/api/transactions/TransactionsService.ts b/src/api/transactions/TransactionsService.ts
index 30fb18e..f3d3fcc 100644
--- a/src/api/transactions/TransactionsService.ts
+++ b/src/api/transactions/TransactionsService.ts
@@ -14,7 +14,7 @@ export interface TransactionsService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of detailed information about transaction(s)
      */
-    getTransactionInformation(txHashes: string[], options?: Options): Promise<any>;
+    getTransactionInformation(txHashes: string[], options?: Options): Promise<Response>;
 
     /**
      * Transaction UTxOs
@@ -28,7 +28,7 @@ export interface TransactionsService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of inputs and outputs for given transaction(s)
      */
-    getTransactionUTxOs(txHashes: string[], options?: Options): Promise<any>;
+    getTransactionUTxOs(txHashes: string[], options?: Options): Promise<Response>;
 
     /**
      * Transaction Metadata
@@ -42,7 +42,7 @@ export interface TransactionsService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of metadata information present in each of the transactions queried
      */
-    getTransactionMetadata(txHashes: string[], options?: Options): Promise<any>;
+    getTransactionMetadata(txHashes: string[], options?: Options): Promise<Response>;
 
     /**
      * Transaction Metadata Labels
@@ -55,7 +55,7 @@ export interface TransactionsService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of known metadata labels
      */
-    getTransactionMetadataLabels(options?: Options): Promise<any>;
+    getTransactionMetadataLabels(options?: Options): Promise<Response>;
 
     /**
      * Submit Transaction
@@ -65,7 +65,7 @@ export interface TransactionsService {
      *
      * @return Transaction Id (hex)
      */
-    submitTransaction(transactionData: Uint8Array | string): Promise<any>;
+    submitTransaction(transactionData: Uint8Array | string): Promise<Response>;
 
     /**
      * Transaction Status (Block Confirmations)
@@ -79,5 +79,5 @@ export interface TransactionsService {
      * @param options Filtering and Pagination options (optional)
      * @return Array of transaction confirmation counts
      */
-    getTransactionStatus(txHashes: string[], options?: Options): Promise<any>;
+    getTransactionStatus(txHashes: string[], options?: Options): Promise<Response>;
 }
\ No newline at end of file
diff --git a/src/api/transactions/impl/TransactionsServiceImpl.ts b/src/api/transactions/impl/TransactionsServiceImpl.ts
index 908b123..73a6d28 100644
--- a/src/api/transactions/impl/TransactionsServiceImpl.ts
+++ b/src/api/transactions/impl/TransactionsServiceImpl.ts
@@ -8,7 +8,7 @@ import {KoiosHttpError} from "../../base/Errors";
  */
 export class TransactionsServiceImpl extends BaseService implements TransactionsService {
 
-    getTransactionInformation(txHashes: string[], options?: Options): Promise<any> {
+    getTransactionInformation(txHashes: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -21,7 +21,7 @@ export class TransactionsServiceImpl extends BaseService implements Transactions
             })
     }
 
-    getTransactionUTxOs(txHashes: string[], options?: Options): Promise<any> {
+    getTransactionUTxOs(txHashes: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -34,7 +34,7 @@ export class TransactionsServiceImpl extends BaseService implements Transactions
             })
     }
 
-    getTransactionMetadata(txHashes: string[], options?: Options): Promise<any> {
+    getTransactionMetadata(txHashes: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -47,7 +47,7 @@ export class TransactionsServiceImpl extends BaseService implements Transactions
             })
     }
 
-    getTransactionMetadataLabels(options?: Options): Promise<any> {
+    getTransactionMetadataLabels(options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }
@@ -60,7 +60,7 @@ export class TransactionsServiceImpl extends BaseService implements Transactions
             })
     }
 
-    submitTransaction(transactionData: Uint8Array | string): Promise<any> {
+    submitTransaction(transactionData: Uint8Array | string): Promise<Response> {
         return this.post('submittx', transactionData)
             .then(async response => {
                 if (!response.ok) {
@@ -70,7 +70,7 @@ export class TransactionsServiceImpl extends BaseService implements Transactions
             })
     }
 
-    getTransactionStatus(txHashes: string[], options?: Options): Promise<any> {
+    getTransactionStatus(txHashes: string[], options?: Options): Promise<Response> {
         if (!options) {
             options = Options.builder().build()
         }