diff --git a/package-lock.json b/package-lock.json
index c85c010..2a46423 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "method-node",
-  "version": "1.2.6",
+  "version": "2.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "method-node",
-      "version": "1.2.6",
+      "version": "2.0.0",
       "license": "ISC",
       "dependencies": {
         "axios": "^1.7.4",
diff --git a/package.json b/package.json
index 965ed0b..cee8b8e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "method-node",
-  "version": "1.2.6",
+  "version": "2.0.0",
   "description": "Node.js library for the Method API",
   "main": "dist/index.ts",
   "module": "dist/index.mjs",
diff --git a/src/index.ts b/src/index.ts
index efa4ff1..abebbd3 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,9 +3,13 @@ export { Method as MethodClient } from './method';
 export * from './errors';
 export * from './configuration';
 export {
-  ResourceStatus, type TResourceStatus, type IResourceListOpts, type IResourceError,
+  ResourceStatus,
+  type TResourceStatus,
+  type IResourceListOpts,
+  type IResourceError,
 } from './resource';
 export * from './resources/Account';
+export * from './resources/CardProduct';
 export * from './resources/Element';
 export * from './resources/Entity';
 export * from './resources/Event';
@@ -14,3 +18,4 @@ export * from './resources/Payment';
 export * from './resources/Report';
 export * from './resources/Simulate';
 export * from './resources/Webhook';
+export * from './resources/Opal';
diff --git a/src/method.ts b/src/method.ts
index 5aec167..32469de 100644
--- a/src/method.ts
+++ b/src/method.ts
@@ -1,5 +1,6 @@
 import Configuration, { IConfigurationOpts, IResponse } from './configuration';
 import Account from './resources/Account';
+import CardProduct from './resources/CardProduct';
 import Element from './resources/Element';
 import Entity from './resources/Entity';
 import Event from './resources/Event';
@@ -9,9 +10,11 @@ import Report from './resources/Report';
 import Webhook from './resources/Webhook';
 import HealthCheck, { IPingResponse } from './resources/HealthCheck';
 import Simulate from './resources/Simulate';
+import Opal from './resources/Opal';
 
 export class Method {
   accounts: Account;
+  cardProducts: CardProduct;
   elements: Element;
   events: Event;
   entities: Entity;
@@ -21,12 +24,14 @@ export class Method {
   webhooks: Webhook;
   healthcheck: HealthCheck;
   simulate: Simulate;
+  opal: Opal;
 
   constructor(opts: IConfigurationOpts) {
     const config = new Configuration(opts);
 
     // Resources
     this.accounts = new Account(config);
+    this.cardProducts = new CardProduct(config);
     this.elements = new Element(config);
     this.events = new Event(config);
     this.entities = new Entity(config);
@@ -36,6 +41,7 @@ export class Method {
     this.webhooks = new Webhook(config);
     this.healthcheck = new HealthCheck(config);
     this.simulate = new Simulate(config);
+    this.opal = new Opal(config);
   }
 
   public async ping(): Promise<IResponse<IPingResponse>> {
diff --git a/src/resource.ts b/src/resource.ts
index c23ce68..f7bae6d 100644
--- a/src/resource.ts
+++ b/src/resource.ts
@@ -11,6 +11,8 @@ import { EntitySubResources } from './resources/Entity';
 import { SimulateAccountsSubResources } from './resources/Simulate/Accounts';
 import { SimulateEntitiesSubResources } from './resources/Simulate/Entities';
 import { SimulateCreditScoresInstance } from './resources/Simulate/Entities/CreditScores';
+import { SimulateConnectInstance } from './resources/Simulate/Entities/Connect';
+import { SimulateAttributesInstance } from './resources/Simulate/Entities/Attributes';
 
 type TSubResources =
   | AccountSubResources
@@ -18,10 +20,13 @@ type TSubResources =
   | EntitySubResources
   | SimulateAccountsSubResources
   | SimulateEntitiesSubResources
-  | SimulateCreditScoresInstance;
+  | SimulateCreditScoresInstance
+  | SimulateConnectInstance
+  | SimulateAttributesInstance;
 
 export interface IRequestConfig {
   idempotency_key?: string;
+  prefer?: string;
 }
 
 class ExtensibleFunction extends Function {
@@ -43,7 +48,7 @@ export default class Resource extends ExtensibleFunction {
       headers: {
         Authorization: `Bearer ${config.apiKey}`,
         'User-Agent': this.getDefaultUserAgent(),
-        'method-version': '2024-04-04',
+        'method-version': '2025-07-04',
       },
       httpsAgent: config.httpsAgent,
     });
@@ -212,9 +217,10 @@ export default class Resource extends ExtensibleFunction {
     requestConfig: IRequestConfig = {},
   ): Promise<Response> {
     const _requestConfig = {
-      headers: requestConfig.idempotency_key
-        ? { 'Idempotency-Key': requestConfig.idempotency_key }
-        : {},
+      headers: {
+        ...(requestConfig.idempotency_key ? { 'Idempotency-Key': requestConfig.idempotency_key } : {}),
+        ...(requestConfig.prefer ? { 'Prefer': requestConfig.prefer } : {}),
+      },
       params,
     };
 
diff --git a/src/resources/Account/Attributes.ts b/src/resources/Account/Attributes.ts
index f99d1f5..1e69cab 100644
--- a/src/resources/Account/Attributes.ts
+++ b/src/resources/Account/Attributes.ts
@@ -9,6 +9,7 @@ export default class AccountAttributes extends Resource {
 
   /**
    * Retrieves an Attributes record for an Account.
+   * https://docs.methodfi.com/reference/accounts/attributes/retrieve
    *
    * @param acc_attr_id ID of the Attribute
    * @returns Returns an Account’s Attribute object.
@@ -20,6 +21,7 @@ export default class AccountAttributes extends Resource {
 
   /**
    * Retrieves a list of Attributes objects for an account.
+   * https://docs.methodfi.com/reference/accounts/attributes/list
    *
    * @returns Returns a list of Attributes objects.
    */
@@ -30,6 +32,7 @@ export default class AccountAttributes extends Resource {
 
   /**
    * Creates a new Attributes request to retrieve the Account’s attributes.
+   * https://docs.methodfi.com/reference/accounts/attributes/create
    *
    * @returns Returns an Account’s Attributes object.
    */
diff --git a/src/resources/Account/Balances.ts b/src/resources/Account/Balances.ts
index 35e8142..2e4e14d 100644
--- a/src/resources/Account/Balances.ts
+++ b/src/resources/Account/Balances.ts
@@ -9,6 +9,7 @@ export default class AccountBalances extends Resource {
 
   /**
    * Retrieve a Balance record for an Account.
+   * https://docs.methodfi.com/reference/accounts/balances/retrieve
    *
    * @param bal_id ID of the balance
    * @returns Returns a Balance object.
@@ -20,6 +21,7 @@ export default class AccountBalances extends Resource {
 
   /**
    * Retrieves a list of Balance objects for an account.
+   * https://docs.methodfi.com/reference/accounts/balances/list
    *
    * @returns Returns a list of Balances.
    */
@@ -30,6 +32,7 @@ export default class AccountBalances extends Resource {
 
   /**
    * Creates a new Balance request to retrieve the Account’s balance from the financial institution.
+   * https://docs.methodfi.com/reference/accounts/balances/create
    *
    * @returns Returns a Balance object.
    */
diff --git a/src/resources/Account/CardBrands.ts b/src/resources/Account/CardBrands.ts
index 350c206..b852f77 100644
--- a/src/resources/Account/CardBrands.ts
+++ b/src/resources/Account/CardBrands.ts
@@ -9,6 +9,7 @@ export default class AccountCardBrand extends Resource {
 
   /**
    * Retrieves a Card Brand object.
+   * https://docs.methodfi.com/reference/accounts/card-brands/retrieve
    *
    * @param cbrd_id ID of the Card
    * @returns Returns a Card object.
@@ -20,6 +21,7 @@ export default class AccountCardBrand extends Resource {
 
   /**
    * Retrieves a list of CardBrand objects for an account.
+   * https://docs.methodfi.com/reference/accounts/card-brands/list
    *
    * @returns Returns a list of CardBrand objects.
    */
@@ -30,6 +32,7 @@ export default class AccountCardBrand extends Resource {
 
   /**
    * Creates a new CardBrand request to retrieve the Account’s card brand.
+   * https://docs.methodfi.com/reference/accounts/card-brands/create
    *
    * @returns Returns a Card object.
    */
diff --git a/src/resources/Account/PaymentInstruments.ts b/src/resources/Account/PaymentInstruments.ts
index 67ec579..27c8ef0 100644
--- a/src/resources/Account/PaymentInstruments.ts
+++ b/src/resources/Account/PaymentInstruments.ts
@@ -9,6 +9,7 @@ export default class AccountPaymentInstruments extends Resource {
 
   /**
    * Retrieves a Payment Instrument record for an Account.
+   * https://docs.methodfi.com/reference/accounts/payment-instruments/retrieve
    *
    * @param pmt_inst_id ID of the Payment Instrument
    * @returns Returns an Account’s Payment Instrument object.
@@ -20,6 +21,7 @@ export default class AccountPaymentInstruments extends Resource {
 
   /**
    * Retrieves a list of Payment Instrument objects for an account.
+   * https://docs.methodfi.com/reference/accounts/payment-instruments/list
    *
    * @returns Returns a list of Payment Instrument objects.
    */
@@ -30,6 +32,7 @@ export default class AccountPaymentInstruments extends Resource {
 
   /**
    * Creates a new Payment Instrument request to retrieve the Account’s payment instruments.
+   * https://docs.methodfi.com/reference/accounts/payment-instruments/create
    *
    * @returns Returns an Account’s Payment Instrument object.
    */
diff --git a/src/resources/Account/Payoffs.ts b/src/resources/Account/Payoffs.ts
index 1b563c4..cb0da03 100644
--- a/src/resources/Account/Payoffs.ts
+++ b/src/resources/Account/Payoffs.ts
@@ -9,6 +9,7 @@ export default class AccountPayoffs extends Resource {
 
   /**
    * Retrieve a Payoff record for an Account.
+   * https://docs.methodfi.com/reference/accounts/payoffs/retrieve
    *
    * @param pyf_id ID of the payoff
    * @returns Returns a Payoff object.
@@ -20,6 +21,7 @@ export default class AccountPayoffs extends Resource {
 
   /**
    * Retrieves a list of Payoff requests for a specific account.
+   * https://docs.methodfi.com/reference/accounts/payoffs/list
    *
    * @returns Returns a list of Payoffs.
    */
@@ -30,6 +32,7 @@ export default class AccountPayoffs extends Resource {
 
   /**
    * Creates a new Payoff request to retrieve a payoff quote from the Account’s financial institution / lender.
+   * https://docs.methodfi.com/reference/accounts/payoffs/create
    *
    * @returns Returns a Payoff object.
    */
diff --git a/src/resources/Account/Products.ts b/src/resources/Account/Products.ts
index 38a3c43..294e9a1 100644
--- a/src/resources/Account/Products.ts
+++ b/src/resources/Account/Products.ts
@@ -1,25 +1,15 @@
 import Resource from '../../resource';
 import Configuration, { IResponse } from '../../configuration';
-import type { IAccountProduct, IAccountProductListResponse } from './types';
+import type { IAccountProductListResponse } from './types';
 
 export default class AccountProducts extends Resource {
   constructor(config: Configuration) {
     super(config.addPath('products'));
   }
 
-  /**
-   * Retrieve an account's product.
-   *
-   * @param prd_id ID of the product.
-   * @returns Returns a Product object.
-   */
-
-  async retrieve(prd_id: string) {
-    return super._getWithId<IResponse<IAccountProduct>>(prd_id);
-  }
-
   /**
    * Retrieve an account's product list.
+   * https://docs.methodfi.com/reference/accounts/products/list
    *
    * @returns Returns a map of Product names to Product objects for an Account.
    */
diff --git a/src/resources/Account/Sensitive.ts b/src/resources/Account/Sensitive.ts
index abf8242..bbb9aa6 100644
--- a/src/resources/Account/Sensitive.ts
+++ b/src/resources/Account/Sensitive.ts
@@ -9,6 +9,7 @@ export default class AccountSensitive extends Resource {
 
   /**
    * Retrieve a Sensitive record for an Account.
+   * https://docs.methodfi.com/reference/accounts/sensitive/retrieve
    *
    * @param astv_id ID of the Sensitive object
    * @returns A Sensitive object
@@ -20,6 +21,7 @@ export default class AccountSensitive extends Resource {
 
   /**
    * Retrieves a list of Sensitive objects for an account.
+   * https://docs.methodfi.com/reference/accounts/sensitive/list
    *
    * @returns Returns a list of Sensitive objects.
    */
@@ -30,6 +32,7 @@ export default class AccountSensitive extends Resource {
 
   /**
    * Creates a new Sensitive request to retrieve sensitive Account information.
+   * https://docs.methodfi.com/reference/accounts/sensitive/create
    *
    * @param data Sensitive fields to expand in the response.
    * @returns A Sensitive object
diff --git a/src/resources/Account/Subscriptions.ts b/src/resources/Account/Subscriptions.ts
index b9bea0e..84e14ed 100644
--- a/src/resources/Account/Subscriptions.ts
+++ b/src/resources/Account/Subscriptions.ts
@@ -14,6 +14,7 @@ export default class AccountSubscriptions extends Resource {
 
   /**
    * Retrieves a Subscription record for an Account.
+   * https://docs.methodfi.com/reference/accounts/subscriptions/retrieve
    *
    * @param sub_id ID of the Subscription
    * @returns IAccountSubscription
@@ -25,6 +26,7 @@ export default class AccountSubscriptions extends Resource {
 
   /**
    * Returns a map of Subscriptions names to Subscription objects associated with an Account, or an empty array if none have been created.
+   * https://docs.methodfi.com/reference/accounts/subscriptions/list
    *
    * @returns Returns a map of Subscription names to Subscription objects.
    */
@@ -35,10 +37,11 @@ export default class AccountSubscriptions extends Resource {
 
   /**
    * Enrolls an Account to a Subscription. Once enrolled, the Subscription name and details will be present on the response object.
+   * https://docs.methodfi.com/reference/accounts/subscriptions/create
    *
    * Note: Subscription requests are processed individually, meaning the success or failure of one subscription does not affect others. The response object will detail any errors encountered.
    *
-   * @param data IAccountSubscriptionCreateOpts: https://docs-v2.methodfi.com/reference/accounts/subscriptions/create
+   * @param data IAccountSubscriptionCreateOpts
    * @returns Returns a map of Subscription name to Subscription object.
    */
 
@@ -50,6 +53,7 @@ export default class AccountSubscriptions extends Resource {
 
   /**
    * Deleting a Subscription means to unsubscribe or unenroll an Account from automatically receiving new Product resources.
+   * https://docs.methodfi.com/reference/accounts/subscriptions/delete
    *
    * @param sub_id ID of the Subscription
    * @returns Returns a Subscription object.
diff --git a/src/resources/Account/Transactions.ts b/src/resources/Account/Transactions.ts
index e6a480d..9885054 100644
--- a/src/resources/Account/Transactions.ts
+++ b/src/resources/Account/Transactions.ts
@@ -9,6 +9,7 @@ export default class AccountTransactions extends Resource {
 
   /**
    * Retrieve a Transaction object for an Account.
+   * https://docs.methodfi.com/reference/accounts/transactions/retrieve
    *
    * @param txn_id ID of the transaction
    * @returns Returns a Transaction object.
@@ -20,6 +21,7 @@ export default class AccountTransactions extends Resource {
 
   /**
    * Retrieve a list of Transactions objects for a specific Account.
+   * https://docs.methodfi.com/reference/accounts/transactions/list
    *
    * @returns Returns a list of transactions for the account.
    */
diff --git a/src/resources/Account/Updates.ts b/src/resources/Account/Updates.ts
index c682eac..fdac516 100644
--- a/src/resources/Account/Updates.ts
+++ b/src/resources/Account/Updates.ts
@@ -9,6 +9,7 @@ export default class AccountUpdates extends Resource {
 
   /**
    * Retrieve an Update object by its ID.
+   * https://docs.methodfi.com/reference/accounts/updates/retrieve
    *
    * @param upt_id ID of the Update
    * @returns Returns an Update object.
@@ -20,6 +21,7 @@ export default class AccountUpdates extends Resource {
 
   /**
    * Retrieve a list of Updates for a specific Account.
+   * https://docs.methodfi.com/reference/accounts/updates/list
    *
    * @returns Returns a list of Updates.
    */
@@ -30,6 +32,7 @@ export default class AccountUpdates extends Resource {
 
   /**
    * Creates a new Update for a liability Account.
+   * https://docs.methodfi.com/reference/accounts/updates/create
    *
    * @returns Returns an Update object.
    */
diff --git a/src/resources/Account/VerificationSessions.ts b/src/resources/Account/VerificationSessions.ts
index e8b04d9..42e316e 100644
--- a/src/resources/Account/VerificationSessions.ts
+++ b/src/resources/Account/VerificationSessions.ts
@@ -13,6 +13,7 @@ export default class AccountVerificationSession extends Resource {
 
   /**
    * Retrieve an AccountVerificationSession object by its ID.
+   * https://docs.methodfi.com/reference/accounts/verification-sessions/retrieve
    *
    * @param avf_id ID of the AccountVerificationSession object.
    * @returns AccountVerificationSession object.
@@ -24,6 +25,7 @@ export default class AccountVerificationSession extends Resource {
 
   /**
    * Retrieves a list of AccountVerificationSession objects for an account.
+   * https://docs.methodfi.com/reference/accounts/verification-sessions/list
    *
    * @returns Returns a list of AccountVerificationSession objects.
    */
@@ -34,6 +36,7 @@ export default class AccountVerificationSession extends Resource {
 
   /**
    * Creates an AccountVerificationSession of the provided type.
+   * https://docs.methodfi.com/reference/accounts/verification-sessions/create
    *
    * @param data IAccountVerificationSessionCreateOpts: { type: TAccountVerificaionSessionTypes }
    * @returns AccountVerificationSession object.
@@ -42,9 +45,10 @@ export default class AccountVerificationSession extends Resource {
   async create(data: IAccountVerificationSessionCreateOpts) {
     return super._create<IResponse<IAccountVerificationSession>, IAccountVerificationSessionCreateOpts>(data);
   }
-  // TODO: Add URL of docs page for this method.
+
   /**
    * Updates an existing AccountVerificationSession object
+   * https://docs.methodfi.com/reference/accounts/verification-sessions/overview
    *
    * @param avf_id ID of the AccountVerificationSession object.
    * @param data Update data for the AccountVerificationSession object based on it's type.
diff --git a/src/resources/Account/index.ts b/src/resources/Account/index.ts
index da13925..d3dc1bd 100644
--- a/src/resources/Account/index.ts
+++ b/src/resources/Account/index.ts
@@ -79,7 +79,7 @@ export class Account extends Resource {
   /**
    * Returns a list of Accounts.
    *
-   * @param opts IAccountListOpts: https://docs.methodfi.com/api/core/accounts/list
+   * @param opts IAccountListOpts: https://docs.methodfi.com/reference/accounts/list
    * @returns Returns a list of Accounts.
    */
 
@@ -94,7 +94,7 @@ export class Account extends Resource {
   /**
    * Creates a new Account for an Entity, either ach or liability, based on the parameters provided. An account is a unique representation of an ACH or Liability account.
    *
-   * @param data Create options: https://docs.methodfi.com/api/core/accounts/create
+   * @param data Create options: https://docs.methodfi.com/reference/accounts/create
    * @param requestConfig Allows for idempotency: { idempotency_key?: string }
    * @returns Returns an Account object.
    */
diff --git a/src/resources/Account/types.ts b/src/resources/Account/types.ts
index 909ad20..873e0ca 100644
--- a/src/resources/Account/types.ts
+++ b/src/resources/Account/types.ts
@@ -279,6 +279,7 @@ export interface IAccountLiability {
   ownership: TAccountOwnership | null;
   fingerprint: string| null;
   type: TAccountLiabilityTypes | null;
+  sub_type: TAccountLiabilitySubTypes | null;
   name: string | null;
 };
 
@@ -298,27 +299,28 @@ export interface IAccountBalance {
   updated_at: string;
 };
 
-export interface IAccountCardBrandInfo {
-  id: string;
-  art_id?: string;
-  url: string;
-  name: string;
-};
-
 export interface IAccountCardBrand {
   id: string;
   account_id: string;
-  network: string | null;
-  issuer: string | null;
-  last4: string | null;
   brands: IAccountCardBrandInfo[];
-  status: 'in_progress' | 'completed' | 'failed';
-  shared: boolean;
   source: 'method' | 'network' | null;
+  status: 'completed' | 'in_progress' | 'failed';
+  shared: boolean;
   error: IResourceError | null;
   created_at: string;
   updated_at: string;
-};
+}
+
+export interface IAccountCardBrandInfo {
+  id: string;
+  card_product_id: string;
+  description: string;
+  name: string;
+  issuer: string;
+  network: string;
+  type: 'specific' | 'generic' | 'in_review';
+  url: string;
+}
 
 export interface IAccountPayoff {
   id: string,
@@ -701,6 +703,25 @@ export interface IAccountPaymentInstrument {
   updated_at: Date;
 }
 
+export const AccountLiabilitySubTypes = {
+  business: 'business',
+  unsecured: 'unsecured',
+  lease: 'lease',
+  loan: 'loan',
+  heloc: 'heloc',
+  charge: 'charge',
+  flexible_spending: 'flexible_spending',
+  secured: 'secured',
+  purchase: 'purchase',
+  note: 'note',
+  private: 'private',
+  federal: 'federal',
+  rent: 'rent',
+} as const;
+
+export type TAccountLiabilitySubTypes = keyof typeof AccountLiabilitySubTypes;
+
+
 export interface IAccount {
   id: string;
   holder_id: string;
diff --git a/src/resources/CardProduct/index.ts b/src/resources/CardProduct/index.ts
new file mode 100644
index 0000000..0a0f605
--- /dev/null
+++ b/src/resources/CardProduct/index.ts
@@ -0,0 +1,46 @@
+import Resource from '../../resource';
+import Configuration, { IResponse } from '../../configuration';
+import { IResourceError } from '../../resource';
+
+export const CardProductTypes = {
+  specific: 'specific',
+  generic: 'generic',
+  in_review: 'in_review',
+} as const;
+
+export type TCardProductTypes = keyof typeof CardProductTypes;
+
+export interface ICardProductBrand {
+  id: string;
+  description: string;
+  network: string;
+  default_image: string;
+}
+
+export interface ICardProduct {
+  id: string;
+  name: string;
+  issuer: string;
+  type: TCardProductTypes;
+  brands: ICardProductBrand[];
+  error: IResourceError | null;
+  created_at: string;
+  updated_at: string;
+}
+
+export default class CardProduct extends Resource {
+  constructor(config: Configuration) {
+    super(config.addPath('card_product'));
+  }
+
+  /**
+   * Retrieves a card product by id
+   * https://docs.methodfi.com/reference/card-products/retrieve
+   *
+   * @param pdt_id Method card product id
+   * @returns ICardProduct
+   */
+  async retrieve(pdt_id: string) {
+    return super._getWithId<IResponse<ICardProduct>>(pdt_id);
+  }
+}
diff --git a/src/resources/Element/Token.ts b/src/resources/Element/Token.ts
index a76d784..1a50b4a 100644
--- a/src/resources/Element/Token.ts
+++ b/src/resources/Element/Token.ts
@@ -13,6 +13,7 @@ export default class ElementToken extends Resource {
 
   /**
    * Creates token to be used with Element
+   * https://docs.methodfi.com/reference/elements/tokens
    *
    * @param opts IElementTokenCreateOpts
    * @returns IElement { element_token: string };
@@ -24,6 +25,7 @@ export default class ElementToken extends Resource {
 
   /**
    * Retrieve the results of an Element session.
+   * https://docs.methodfi.com/reference/elements/results
    *
    * @param pk_elem_id ID of the Element token
    * @returns Returns an ElementResults object.
diff --git a/src/resources/Entity/Attributes.ts b/src/resources/Entity/Attributes.ts
index 934288c..c814cdd 100644
--- a/src/resources/Entity/Attributes.ts
+++ b/src/resources/Entity/Attributes.ts
@@ -9,6 +9,7 @@ export default class EntityAttributes extends Resource {
 
   /**
    * Retrieves an Attributes record for an Entity.
+   * https://docs.methodfi.com/reference/entities/attributes/retrieve
    *
    * @param attr_id ID of the Attribute
    * @returns Returns an Entity’s Attribute object.
@@ -20,6 +21,7 @@ export default class EntityAttributes extends Resource {
 
   /**
    * Retrieves a list of Attributes objects for an entity.
+   * https://docs.methodfi.com/reference/entities/attributes/list
    *
    * @returns Returns a list of Attributes objects.
    */
@@ -30,6 +32,7 @@ export default class EntityAttributes extends Resource {
 
   /**
    * Creates a new Attributes request to retrieve the Entity’s attributes.
+   * https://docs.methodfi.com/reference/entities/attributes/create
    *
    * @returns Returns an Entity’s Attributes object.
    */
diff --git a/src/resources/Entity/Connect.ts b/src/resources/Entity/Connect.ts
index 8d646e5..99acfce 100644
--- a/src/resources/Entity/Connect.ts
+++ b/src/resources/Entity/Connect.ts
@@ -1,4 +1,4 @@
-import Resource, { IResourceListOpts } from '../../resource';
+import Resource, { IResourceListOpts, IRequestConfig } from '../../resource';
 import Configuration, { IResponse } from '../../configuration';
 import type { IEntityConnect } from './types';
 
@@ -55,6 +55,7 @@ export default class EntityConnect extends Resource {
 
   /**
    * Retrieves a Connect record for an Entity.
+   * https://docs.methodfi.com/reference/entities/connect/retrieve
    *
    * @param cxn_id ID of the entity connection
    * @returns Returns a Connect object.
@@ -66,6 +67,7 @@ export default class EntityConnect extends Resource {
 
   /**
    * Retrieves a list of Connect objects for an entity.
+   * https://docs.methodfi.com/reference/entities/connect/list
    *
    * @returns Returns a list of Connect objects.
    */
@@ -76,11 +78,12 @@ export default class EntityConnect extends Resource {
 
   /**
    * Creates a new Connect request to connect all liability accounts for the Entity.
+   * https://docs.methodfi.com/reference/entities/connect/create
    *
    * @returns Returns a Connect object.
    */
 
-  async create(opts: IConnectCreateOpts = {}, params: IExpandableOpts = {}) {
-    return super._create<IResponse<IEntityConnect>, IConnectCreateOpts, IExpandableOpts>(opts, params);
+  async create(opts: IConnectCreateOpts = {}, params: IExpandableOpts = {}, requestConfig: IRequestConfig = {}) {
+    return super._create<IResponse<IEntityConnect>, IConnectCreateOpts, IExpandableOpts>(opts, params, requestConfig);
   }
 };
diff --git a/src/resources/Entity/CreditScores.ts b/src/resources/Entity/CreditScores.ts
index a906a16..c1285a2 100644
--- a/src/resources/Entity/CreditScores.ts
+++ b/src/resources/Entity/CreditScores.ts
@@ -9,6 +9,7 @@ export default class EntityCreditScores extends Resource {
 
   /**
    * Retrieves a Credit Score record for an Entity.
+   * https://docs.methodfi.com/reference/entities/credit-scores/retrieve
    *
    * @param crs_id ID of the CreditScore
    * @returns Returns an Entity’s CreditScore object.
@@ -20,6 +21,7 @@ export default class EntityCreditScores extends Resource {
 
   /**
    * Retrieves a list of CreditScore objects for an entity.
+   * https://docs.methodfi.com/reference/entities/credit-scores/list
    *
    * @returns Returns a list of CreditScore objects.
    */
@@ -30,6 +32,7 @@ export default class EntityCreditScores extends Resource {
 
   /**
    * Creates a new Credit Score request to retrieve the Entity’s credit score.
+   * https://docs.methodfi.com/reference/entities/credit-scores/create
    *
    * @returns Returns an Entity’s CreditScore object.
    */
diff --git a/src/resources/Entity/Identities.ts b/src/resources/Entity/Identities.ts
index 770db79..d694c64 100644
--- a/src/resources/Entity/Identities.ts
+++ b/src/resources/Entity/Identities.ts
@@ -9,6 +9,7 @@ export default class EntityIdentities extends Resource {
 
   /**
    * Retrieves an Identity request with the matched identity for an Entity.
+   * https://docs.methodfi.com/reference/entities/identities/retrieve
    *
    * @param idn_id ID of the identity
    * @returns Returns an Identity object.
@@ -20,6 +21,7 @@ export default class EntityIdentities extends Resource {
 
   /**
    * Retrieves a list of Identity objects for an entity.
+   * https://docs.methodfi.com/reference/entities/identities/list
    *
    * @returns Returns a list of Identity objects.
    */
@@ -30,6 +32,7 @@ export default class EntityIdentities extends Resource {
 
   /**
    * Creates a new Identity request to retrieve the identity of an Entity, based off the PII that has been passed in to Method so far.
+   * https://docs.methodfi.com/reference/entities/identities/create
    *
    * @returns Returns an Identity object.
    */
diff --git a/src/resources/Entity/Products.ts b/src/resources/Entity/Products.ts
index 13522a7..387779c 100644
--- a/src/resources/Entity/Products.ts
+++ b/src/resources/Entity/Products.ts
@@ -1,25 +1,15 @@
 import Resource from '../../resource';
 import Configuration, { IResponse } from '../../configuration';
-import type { IEntityProduct, IEntityProductListResponse } from './types';
+import type { IEntityProductListResponse } from './types';
 
 export default class EntityProducts extends Resource {
   constructor(config: Configuration) {
     super(config.addPath('products'));
   }
 
-  /**
-   * Retrieve an entity's product.
-   *
-   * @param prd_id ID of the product.
-   * @returns Returns a Product object.
-   */
-
-  async retrieve(prd_id: string) {
-    return super._getWithId<IResponse<IEntityProduct>>(prd_id);
-  }
-
   /**
    * Retrieve an entity's product list.
+   * https://docs.methodfi.com/reference/entities/products/list
    *
    * @returns Returns a map of Product names to Product objects for an Entity.
    */
diff --git a/src/resources/Entity/Subscriptions.ts b/src/resources/Entity/Subscriptions.ts
index d98016c..0f6e7b1 100644
--- a/src/resources/Entity/Subscriptions.ts
+++ b/src/resources/Entity/Subscriptions.ts
@@ -14,6 +14,7 @@ export default class EntitySubscriptions extends Resource {
 
   /**
    * Retrieves a Subscription record for an Entity.
+   * https://docs.methodfi.com/reference/entities/subscriptions/retrieve
    *
    * @param sub_id ID of the subscription
    *
@@ -26,6 +27,7 @@ export default class EntitySubscriptions extends Resource {
 
   /**
    * Returns a map of Subscriptions names to Subscription objects associated with an Entity, or an empty array if none have been created.
+   * https://docs.methodfi.com/reference/entities/subscriptions/list
    *
    * @returns Returns a map of Subscription names to Subscription objects.
    */
@@ -37,6 +39,7 @@ export default class EntitySubscriptions extends Resource {
   /**
    * Enrolls an Entity to a Subscription. Once enrolled, the Subscription name and details will be present on the response object.
    * Being enrolled in a Subscription is independent of other Subscriptions. An error won’t prevent the Entity from being enrolled in other Subscriptions.
+   * https://docs.methodfi.com/reference/entities/subscriptions/create
    *
    * @param sub_name A Subscription name to enroll the Entity in. enroll: ['connect', 'credit_score']
    *
@@ -54,6 +57,7 @@ export default class EntitySubscriptions extends Resource {
 
   /**
    * Deleting a Subscription means to unenroll an Entity from automatically receiving new Product resources.
+   * https://docs.methodfi.com/reference/entities/subscriptions/delete
    *
    * @param sub_id ID of the subscription
    * @returns Returns a Subscription object.
diff --git a/src/resources/Entity/Vehicles.ts b/src/resources/Entity/Vehicles.ts
index e8ae2a0..03a3df2 100644
--- a/src/resources/Entity/Vehicles.ts
+++ b/src/resources/Entity/Vehicles.ts
@@ -9,6 +9,7 @@ export default class EntityVehicles extends Resource {
 
   /**
    * Retrieves a Vehicle record for an Entity.
+   * https://docs.methodfi.com/reference/entities/vehicles/retrieve
    *
    * @param evhl_id ID of the Vehicle
    * @returns Returns an Entity’s Vehicle object.
@@ -20,7 +21,8 @@ export default class EntityVehicles extends Resource {
 
   /**
    * Retrieves a list of Vehicle objects for an entity.
-   *
+   * https://docs.methodfi.com/reference/entities/vehicles/list
+  *
    * @returns Returns a list of Vehicle objects.
    */
 
@@ -30,6 +32,7 @@ export default class EntityVehicles extends Resource {
 
   /**
    * Creates a new Vehicle request to retrieve the Entity’s vehicle.
+   * https://docs.methodfi.com/reference/entities/vehicles/create
    *
    * @returns Returns an Entity’s Vehicle object.
    */
diff --git a/src/resources/Entity/VerificationSessions.ts b/src/resources/Entity/VerificationSessions.ts
index c27bb8a..d2a9049 100644
--- a/src/resources/Entity/VerificationSessions.ts
+++ b/src/resources/Entity/VerificationSessions.ts
@@ -13,6 +13,7 @@ export default class EntityVerificationSession extends Resource {
 
   /**
    * Retrieves a EntityVerificationSession for an entity.
+   * https://docs.methodfi.com/reference/entities/verification-sessions/retrieve
    *
    * @param evf_id ID of the verification session.
    * @returns Returns an EntityVerificationSession object.
@@ -24,6 +25,7 @@ export default class EntityVerificationSession extends Resource {
 
   /**
    * Retrieves a list of VerificationSession objects for an entity.
+   * https://docs.methodfi.com/reference/entities/verification-sessions/list
    *
    * @returns Returns a list of VerificationSession objects.
    */
@@ -34,6 +36,7 @@ export default class EntityVerificationSession extends Resource {
 
   /**
    * Create a verification session.
+   * https://docs.methodfi.com/reference/entities/verification-sessions/overview
    *
    * @param data IEntityVerificationSessionCreateOpts
    * @returns Returns an EntityVerificationSession object.
@@ -45,6 +48,7 @@ export default class EntityVerificationSession extends Resource {
 
   /**
    * Update a verification session
+   * https://docs.methodfi.com/reference/entities/verification-sessions/overview
    *
    * @param evf_id ID of the verification session.
    * @param data IEntityVerificationSessionUpdateOpts
diff --git a/src/resources/Entity/index.ts b/src/resources/Entity/index.ts
index 30f9ca2..5d90bf2 100644
--- a/src/resources/Entity/index.ts
+++ b/src/resources/Entity/index.ts
@@ -71,7 +71,7 @@ export class Entity extends Resource {
   /**
    * Returns all the Entities associated with your team, or an empty array if none have been created.
    *
-   * @param opts IEntityListOpts: https://docs.methodfi.com/api/core/entities/list
+   * @param opts IEntityListOpts: https://docs.methodfi.com/reference/entities/list
    * @returns Returns a list of Entities.
    */
 
diff --git a/src/resources/Entity/types.ts b/src/resources/Entity/types.ts
index a86a3ee..e8e7151 100644
--- a/src/resources/Entity/types.ts
+++ b/src/resources/Entity/types.ts
@@ -3,6 +3,7 @@ import type {
   TResourceStatus,
   IResourceListOpts,
 } from '../../resource';
+import { TAccountProducts, TAccountSubscriptionTypes } from '../Account';
 
 export const CreditReportBureaus = {
   experian: 'experian',
@@ -119,8 +120,8 @@ export interface IEntityConnect {
   entity_id: string;
   status: TResourceStatus;
   accounts: string[] | null;
-  requested_products: TEntityProductType[];
-  requested_subscriptions: TEntitySubscriptionNames[];
+  requested_products: TAccountProducts[];
+  requested_subscriptions: TAccountSubscriptionTypes[];
   error: IResourceError | null;
   created_at: string;
   updated_at: string;
diff --git a/src/resources/Event/index.ts b/src/resources/Event/index.ts
index 5186469..e60f190 100644
--- a/src/resources/Event/index.ts
+++ b/src/resources/Event/index.ts
@@ -32,7 +32,7 @@ export default class Event extends Resource {
   /**
    * Lists all events, optionally filtered by resource_id
    *
-   * @param opts IEventListOpts: https://docs.methodfi.com/api/core/events/list
+   * @param opts IEventListOpts: https://docs.methodfi.com/reference/events/list
    * @returns Returns a list of Event objects
    */
   async list(opts?: IEventListOpts) {
diff --git a/src/resources/Merchant/index.ts b/src/resources/Merchant/index.ts
index dae2f7b..5466732 100644
--- a/src/resources/Merchant/index.ts
+++ b/src/resources/Merchant/index.ts
@@ -39,6 +39,7 @@ export default class Merchant extends Resource {
 
   /**
    * Retrieves a merchant by id
+   * https://docs.methodfi.com/reference/merchants/retrieve
    *
    * @param mch_id Method merchant id
    * @returns IMerchant
@@ -50,8 +51,9 @@ export default class Merchant extends Resource {
 
   /**
    * Lists all merchants
+   * https://docs.methodfi.com/reference/merchants/list
    *
-   * @param opts IMerchantListOpts: https://docs.methodfi.com/api/core/merchants/list
+   * @param opts IMerchantListOpts
    * @returns IMerchant[]
    */
 
diff --git a/src/resources/Opal/Token.ts b/src/resources/Opal/Token.ts
new file mode 100644
index 0000000..bf353ba
--- /dev/null
+++ b/src/resources/Opal/Token.ts
@@ -0,0 +1,24 @@
+import Resource from '../../resource';
+import Configuration, { IResponse } from '../../configuration';
+import type {
+  IOpalToken,
+  IOpalTokenCreateOpts,
+} from './types';
+
+export default class OpalToken extends Resource {
+  constructor(config: Configuration) {
+    super(config.addPath('token'));
+  }
+
+  /**
+   * Creates token to be used with Opal
+   * https://docs.methodfi.com/reference/opal/create_token
+   *
+   * @param opts IOpalTokenCreateOpts
+   * @returns IOpal { token: string, valid_until: string, session_id: string };
+   */
+
+  async create(opts: IOpalTokenCreateOpts) {
+    return super._create<IResponse<IOpalToken>, IOpalTokenCreateOpts>(opts);
+  }
+};
diff --git a/src/resources/Opal/index.ts b/src/resources/Opal/index.ts
new file mode 100644
index 0000000..6de9374
--- /dev/null
+++ b/src/resources/Opal/index.ts
@@ -0,0 +1,15 @@
+import Resource from '../../resource';
+import Configuration from '../../configuration';
+import Token from './Token';
+
+export default class Opal extends Resource {
+  token: Token;
+
+  constructor(config: Configuration) {
+    const _config = config.addPath('opal');
+    super(_config);
+    this.token = new Token(_config);
+  }
+};
+
+export * from './types';
diff --git a/src/resources/Opal/types.ts b/src/resources/Opal/types.ts
new file mode 100644
index 0000000..dc5ed29
--- /dev/null
+++ b/src/resources/Opal/types.ts
@@ -0,0 +1,86 @@
+const OpalModes = {
+  identity_verification: 'identity_verification',
+  connect: 'connect',
+  card_connect: 'card_connect',
+  account_verification: 'account_verification',
+  transactions: 'transactions',
+} as const;
+export type TOpalModes = keyof typeof OpalModes;
+
+const SkipPII = {
+  name: 'name',
+  dob: 'dob',
+  address: 'address',
+  ssn_4: 'ssn_4',
+} as const;
+export type TSkipPII = keyof typeof SkipPII;
+
+const AccountFiltersAccountTypes = {
+  credit_card: 'credit_card',
+  auto_loan: 'auto_loan',
+  mortgage: 'mortgage',
+  personal_loan: 'personal_loan',
+  student_loan: 'student_loan',
+} as const;
+export type TAccountFiltersAccountTypes = keyof typeof AccountFiltersAccountTypes;
+
+export type TSelectionType = 'single' | 'multiple' | 'all';
+
+export interface IOpalAccountFiltersInclude {
+  account_types: TAccountFiltersAccountTypes[];
+}
+
+export interface IOpalAccountFiltersExclude {
+  account_types: TAccountFiltersAccountTypes[];
+  mch_ids: string[];
+  unverified_account_numbers: boolean;
+}
+
+export interface IConnectAccountFilters {
+  include: IOpalAccountFiltersInclude;
+  exclude: IOpalAccountFiltersExclude;
+}
+
+export interface ICardConnectAccountFilters {
+  exclude: Omit<IOpalAccountFiltersExclude, 'account_types'>; 
+}
+
+export interface IOpalIdentityVerificationCreateOpts {
+  skip_pii: TSkipPII[];
+}
+
+export interface IOpalConnectCreateOpts {
+  skip_pii: TSkipPII[];
+  selection_type: TSelectionType;
+  account_filters: IConnectAccountFilters;
+}
+
+export interface IOpalCardConnectCreateOpts {
+  skip_pii: TSkipPII[];
+  selection_type: TSelectionType;
+  account_filters: ICardConnectAccountFilters;
+}
+
+export interface IOpalAccountVerificationCreateOpts {
+  account_id: string;
+}
+
+export interface IOpalTransactionsCreateOpts {
+  transactions: {};
+}
+
+export interface IOpalTokenCreateOpts {
+  mode: TOpalModes;
+  entity_id: string;
+  identity_verification?: IOpalIdentityVerificationCreateOpts;
+  connect?: IOpalConnectCreateOpts;
+  card_connect?: IOpalCardConnectCreateOpts;
+  account_verification?: IOpalAccountVerificationCreateOpts;
+  transactions?: IOpalTransactionsCreateOpts;
+}
+
+export interface IOpalToken {
+  token: string;
+  valid_until: string;
+  session_id: string;
+}
\ No newline at end of file
diff --git a/src/resources/Payment/Reversals.ts b/src/resources/Payment/Reversals.ts
index 396fd13..94498b0 100644
--- a/src/resources/Payment/Reversals.ts
+++ b/src/resources/Payment/Reversals.ts
@@ -32,7 +32,7 @@ export default class Reversal extends Resource {
    * Update a reversal
    *
    * @param rvs_id id of the reversal
-   * @param data IReversalUpdateOpts: https://docs.methodfi.com/api/core/payments/reversals/update
+   * @param data IReversalUpdateOpts
    * @returns IReversal
    */
 
diff --git a/src/resources/Payment/index.ts b/src/resources/Payment/index.ts
index 592d40b..a5ebcc8 100644
--- a/src/resources/Payment/index.ts
+++ b/src/resources/Payment/index.ts
@@ -30,6 +30,7 @@ export class Payment extends Resource {
 
   /**
    * Retrieves payment by id
+   * https://docs.methodfi.com/reference/payments/retrieve
    *
    * @param pmt_id id of the payment
    * @returns IPayment
@@ -41,8 +42,9 @@ export class Payment extends Resource {
 
   /**
    * Lists all payments
+   * https://docs.methodfi.com/reference/payments/list
    *
-   * @param opts IPaymentListOpts: https://docs.methodfi.com/api/core/payments/list
+   * @param opts IPaymentListOpts
    * @returns IPayment[]
    */
 
@@ -52,6 +54,7 @@ export class Payment extends Resource {
 
   /**
    * Creates a payment
+   * https://docs.methodfi.com/reference/payments/create
    *
    * @param opts IPaymentCreateOpts
    * @param requestConfig Idempotency key: { idempotency_key: string}
@@ -64,6 +67,7 @@ export class Payment extends Resource {
 
   /**
    * Cancels a payment
+   * https://docs.methodfi.com/reference/payments/delete
    *
    * @param pmt_id id of the payment
    * @returns IPayment
diff --git a/src/resources/Report/index.ts b/src/resources/Report/index.ts
index 354cedc..5414047 100644
--- a/src/resources/Report/index.ts
+++ b/src/resources/Report/index.ts
@@ -46,6 +46,7 @@ export default class Report extends Resource {
 
   /**
    * Retrieves the Report associated with the ID.
+   * https://docs.methodfi.com/reference/reports/retrieve
    *
    * @param rpt_id id of the report
    * @returns Returns the Report associated with the ID.
@@ -57,8 +58,9 @@ export default class Report extends Resource {
 
   /**
    * Creates a new Report for a specific type. Once created, you can retrieve the Report results from the URL returned.
+   * https://docs.methodfi.com/reference/reports/create
    *
-   * @param opts IReportCreateOpts: https://docs.methodfi.com/api/core/reports/create
+   * @param opts IReportCreateOpts
    * @param requestConfig Idempotency key: { idempotency_key: string}
    * @returns Returns a Report object.
    */
@@ -69,6 +71,7 @@ export default class Report extends Resource {
 
   /**
    * Download a report
+   * https://docs.methodfi.com/reference/reports/download
    *
    * @param rpt_id id of the report
    * @returns Returns the Report’s results in CSV format.
diff --git a/src/resources/Simulate/Accounts/Transactions.ts b/src/resources/Simulate/Accounts/Transactions.ts
index 2146912..98284ca 100644
--- a/src/resources/Simulate/Accounts/Transactions.ts
+++ b/src/resources/Simulate/Accounts/Transactions.ts
@@ -9,6 +9,7 @@ export default class SimulateTransactions extends Resource {
 
   /**
    * For Accounts that have been successfully verified, you may simulate Transactions in the dev environment.
+   * https://docs.methodfi.com/reference/simulations/transactions/create
    *
    * @returns Returns the created Transaction.
    */
diff --git a/src/resources/Simulate/Entities/Attributes.ts b/src/resources/Simulate/Entities/Attributes.ts
new file mode 100644
index 0000000..423fed6
--- /dev/null
+++ b/src/resources/Simulate/Entities/Attributes.ts
@@ -0,0 +1,35 @@
+import Resource from '../../../resource';
+import Configuration, { IResponse } from '../../../configuration';
+import type { SimulateEntityAttributesOpts } from '../types';
+
+export class SimulateAttributesInstance extends Resource {
+  constructor(entity_id: string, config: Configuration) {
+    super(config.addPath(entity_id));
+  }
+
+  /**
+   * For Entities that have been successfully verified, you may simulate Attributes in the dev environment.
+   * https://docs.methodfi.com/reference/simulations/attributes/create
+   *
+   * @param opts SimulateEntityAttributesOpts
+   */
+  async create(opts: SimulateEntityAttributesOpts) {
+    return super._create<IResponse<null>, SimulateEntityAttributesOpts>(opts);
+  }
+}
+
+export interface SimulateAttributes {
+  (entity_id: string): SimulateAttributesInstance;
+}
+
+export class SimulateAttributes extends Resource {
+  constructor(config: Configuration) {
+    super(config.addPath('attributes'));
+  }
+
+  protected _call(entity_id: string): SimulateAttributesInstance {
+    return new SimulateAttributesInstance(entity_id, this.config);
+  }
+}
+
+export default SimulateAttributes;
diff --git a/src/resources/Simulate/Entities/Connect.ts b/src/resources/Simulate/Entities/Connect.ts
new file mode 100644
index 0000000..da26e08
--- /dev/null
+++ b/src/resources/Simulate/Entities/Connect.ts
@@ -0,0 +1,35 @@
+import Resource from '../../../resource';
+import Configuration, { IResponse } from '../../../configuration';
+import type { SimulateEntityConnectOpts } from '../types';
+
+export class SimulateConnectInstance extends Resource {
+  constructor(entity_id: string, config: Configuration) {
+    super(config.addPath(entity_id));
+  }
+
+  /**
+   * For Entities that have been successfully verified, you may simulate Connect in the dev environment.
+   * https://docs.methodfi.com/reference/simulations/connect/create
+   *
+   * @param opts SimulateEntityConnectOpts
+   */
+  async create(opts: SimulateEntityConnectOpts) {
+    return super._create<IResponse<null>, SimulateEntityConnectOpts>(opts);
+  }
+}
+
+export interface SimulateConnect {
+  (entity_id: string): SimulateConnectInstance;
+}
+
+export class SimulateConnect extends Resource {
+  constructor(config: Configuration) {
+    super(config.addPath('connect'));
+  }
+
+  protected _call(entity_id: string): SimulateConnectInstance {
+    return new SimulateConnectInstance(entity_id, this.config);
+  }
+}
+
+export default SimulateConnect;
diff --git a/src/resources/Simulate/Entities/CreditScores.ts b/src/resources/Simulate/Entities/CreditScores.ts
index 90f070e..7b5e97c 100644
--- a/src/resources/Simulate/Entities/CreditScores.ts
+++ b/src/resources/Simulate/Entities/CreditScores.ts
@@ -12,19 +12,23 @@ export class SimulateCreditScoresInstance extends Resource {
 
   /**
    * For Entities that have been successfully verified, you may simulate Credit Scores in the dev environment.
+   * https://docs.methodfi.com/reference/simulations/credit-scores/create
    *
    * @returns Returns the created Credit Score.
    */
   async create(opts: { scores: IEntityCreditScoresType[] }) {
-    return super._create<IResponse<IEntityCreditScores>, { scores: IEntityCreditScoresType[] }>(opts);
+    return super._create<
+      IResponse<IEntityCreditScores>,
+      { scores: IEntityCreditScoresType[] }
+    >(opts);
   }
 }
 
-export default interface SimulateCreditScores {
+export interface SimulateCreditScores {
   (crs_id: string): SimulateCreditScoresInstance;
 }
 
-export default class SimulateCreditScores extends Resource {
+export class SimulateCreditScores extends Resource {
   constructor(config: Configuration) {
     super(config.addPath('credit_scores'));
   }
@@ -33,3 +37,5 @@ export default class SimulateCreditScores extends Resource {
     return new SimulateCreditScoresInstance(crs_id, this.config);
   }
 }
+
+export default SimulateCreditScores;
diff --git a/src/resources/Simulate/Entities/index.ts b/src/resources/Simulate/Entities/index.ts
index fc0b384..aefa859 100644
--- a/src/resources/Simulate/Entities/index.ts
+++ b/src/resources/Simulate/Entities/index.ts
@@ -1,11 +1,17 @@
 import Resource from '../../../resource';
 import Configuration from '../../../configuration';
 import SimulateCreditScores from './CreditScores';
+import SimulateConnect from './Connect';
+import SimulateAttributes from './Attributes';
 
 export class SimulateEntitiesSubResources {
   creditScores: SimulateCreditScores;
+  connect: SimulateConnect;
+  attributes: SimulateAttributes;
   constructor(entity_id: string, config: Configuration) {
     this.creditScores = new SimulateCreditScores(config.addPath(entity_id));
+    this.connect = new SimulateConnect(config.addPath(entity_id));
+    this.attributes = new SimulateAttributes(config.addPath(entity_id));
   }
 }
 
diff --git a/src/resources/Simulate/Events.ts b/src/resources/Simulate/Events.ts
index 116f0db..3fd99e1 100644
--- a/src/resources/Simulate/Events.ts
+++ b/src/resources/Simulate/Events.ts
@@ -15,6 +15,7 @@ export default class SimulateEvents extends Resource {
 
   /**
    * Simulates an event.
+   * https://docs.methodfi.com/reference/simulations/events/create
    *
    * @param data The event type and optional entity or account ID.
    * @returns null
diff --git a/src/resources/Simulate/Payments.ts b/src/resources/Simulate/Payments.ts
index 5b97d44..82e2afd 100644
--- a/src/resources/Simulate/Payments.ts
+++ b/src/resources/Simulate/Payments.ts
@@ -14,6 +14,7 @@ export default class SimulatePayments extends Resource {
 
   /**
    * Updates a Payment’s status.
+   * https://docs.methodfi.com/reference/simulations/payments/update
    *
    * @param id ID of the Payment
    * @param data The desired payment status or error code.
diff --git a/src/resources/Simulate/types.ts b/src/resources/Simulate/types.ts
new file mode 100644
index 0000000..5f14217
--- /dev/null
+++ b/src/resources/Simulate/types.ts
@@ -0,0 +1,25 @@
+export const ConnectBehaviors = {
+  new_credit_card_account: 'new_credit_card_account',
+  new_auto_loan_account: 'new_auto_loan_account',
+  new_mortgage_account: 'new_mortgage_account',
+  new_student_loan_account: 'new_student_loan_account',
+  new_personal_loan_account: 'new_personal_loan_account',
+} as const;
+
+export type TConnectBehaviors =
+  (typeof ConnectBehaviors)[keyof typeof ConnectBehaviors];
+
+export type SimulateEntityConnectOpts = {
+  behaviors: TConnectBehaviors[];
+};
+
+export const AttributesBehaviors = {
+  new_soft_inquiry: 'new_soft_inquiry',
+} as const;
+
+export type TAttributesBehaviors =
+  (typeof AttributesBehaviors)[keyof typeof AttributesBehaviors];
+
+export type SimulateEntityAttributesOpts = {
+  behaviors: TAttributesBehaviors[];
+};
diff --git a/src/resources/Webhook/index.ts b/src/resources/Webhook/index.ts
index 558bce7..12e55f9 100644
--- a/src/resources/Webhook/index.ts
+++ b/src/resources/Webhook/index.ts
@@ -32,7 +32,7 @@ export default class Webhook extends Resource {
    * Creating a new Webhook means registering a URL to receive updates for a specific event type.
    * Once a resource is created or updated, your application will be notified via an HTTP POST request with the event information.
    *
-   * @param opts IWebhookCreateOpts: https://docs.methodfi.com/api/core/webhooks/create
+   * @param opts IWebhookCreateOpts: https://docs.methodfi.com/reference/webhooks/create
    * @param requestConfig Idempotency key: { idempotency_key: string}
    * @returns Returns the newly created Webhook object.
    */
diff --git a/src/resources/Webhook/types.ts b/src/resources/Webhook/types.ts
index acf76b2..791f24f 100644
--- a/src/resources/Webhook/types.ts
+++ b/src/resources/Webhook/types.ts
@@ -27,6 +27,7 @@ export const WebhookTypes = {
   entity_verification_session_update: 'entity_verification_session.update',
   connect_create: 'connect.create',
   connect_update: 'connect.update',
+  connect_available: 'connect.available',
   balance_create: 'balance.create',
   balance_update: 'balance.update',
   identity_create: 'identity.create',
@@ -35,6 +36,7 @@ export const WebhookTypes = {
   account_verification_session_update: 'account_verification_session.update',
   card_brand_create: 'card_brand.create',
   card_brand_update: 'card_brand.update',
+  card_brand_available: 'card_brand.available',
   sensitive_create: 'sensitive.create',
   sensitive_update: 'sensitive.update',
   update_create: 'update.create',
diff --git a/test/index.ts b/test/index.ts
index 71307ba..3bef1b7 100644
--- a/test/index.ts
+++ b/test/index.ts
@@ -10,3 +10,4 @@ require('./resources/Webhook.tests');
 require('./resources/HealthCheck.tests');
 require('./resources/Metadata.tests');
 require('./resources/Event.tests');
+require('./resources/Opal.tests');
diff --git a/test/resources/Account.tests.ts b/test/resources/Account.tests.ts
index fb06664..6f07aae 100644
--- a/test/resources/Account.tests.ts
+++ b/test/resources/Account.tests.ts
@@ -146,7 +146,8 @@ describe('Accounts - core methods tests', () => {
           mask: '8721',
           ownership: 'unknown',
           type: 'credit_card',
-          name: 'Chase Credit Card'
+          sub_type: 'flexible_spending',
+          name: 'Chase Sapphire Reserve'
         },
         latest_verification_session: accounts_create_liability_response.latest_verification_session,
         balance: null,
@@ -243,14 +244,14 @@ describe('Accounts - core methods tests', () => {
     });
 
     it('should successfully retrieve the balance of an account.', async () => {
-      const getAccountBalances = async () => {
-        return client
+      const account_balances_response = async () => {
+        return await client
           .accounts(test_credit_card_account.id)
           .balances
           .retrieve(balances_create_response.id);
-      }
+      };
 
-      const account_balances = await awaitResults(getAccountBalances);
+      const account_balances = await awaitResults(account_balances_response);
 
       const expect_results: IAccountBalance = {
         id: balances_create_response.id,
@@ -266,14 +267,10 @@ describe('Accounts - core methods tests', () => {
     });
 
     it('should successfully list balances for an account.', async () => {
-      const listAccountBalances = async () => {
-        return client
-          .accounts(test_credit_card_account.id)
-          .balances
-          .list();
-      };
-
-      const account_balances = await awaitResults(listAccountBalances);
+      const account_balances = await client
+        .accounts(test_credit_card_account.id)
+        .balances
+        .list();
 
       const expect_results = {
         id: balances_create_response.id,
@@ -291,43 +288,42 @@ describe('Accounts - core methods tests', () => {
 
   describe('accounts.cardBrands', () => {
     it('should successfully create a card for an account.', async () => {
+      // @ts-ignore
       card_create_response = await client
         .accounts(test_credit_card_account.id)
         .cardBrands
         .create();
 
-        const expect_results: IAccountCardBrand = {
-          id: card_create_response.id,
-          account_id: test_credit_card_account.id,
-          network: 'visa',
-          status: 'in_progress',
-          issuer: card_create_response.issuer,
-          last4: '1580',
-          brands: card_create_response.brands,
-          shared: false,
-          source: card_create_response.source,
-          error: null,
-          created_at: card_create_response.created_at,
-          updated_at: card_create_response.updated_at
-        };
+      const expect_results: IAccountCardBrand = {
+        id: card_create_response.id,
+        account_id: test_credit_card_account.id,
+        brands: [],
+        status: 'in_progress',
+        shared: false,
+        source: null,
+        error: null,
+        created_at: card_create_response.created_at,
+        updated_at: card_create_response.updated_at
+      }
 
       card_create_response.should.be.eql(expect_results);
       await new Promise(r => setTimeout(r, 2000))
     });
 
     it('should successfully retrieve a card for an account.', async () => {
-      const card_retrieve_response = await client
+      // @ts-ignore
+      const cardRetrieveResponse = async () => {
+        return await client
         .accounts(test_credit_card_account.id)
         .cardBrands
         .retrieve(card_create_response.id);
+      };
+
+      const card_retrieve_response = await awaitResults(cardRetrieveResponse);
 
       expect(card_retrieve_response.id).to.equal(card_create_response.id);
       expect(card_retrieve_response.account_id).to.equal(test_credit_card_account.id);
-      expect(card_retrieve_response.network).to.equal('visa');
       expect(card_retrieve_response.status).to.equal('completed');
-      expect(card_retrieve_response.issuer).to.equal(card_create_response.issuer);
-      expect(card_retrieve_response.last4).to.equal('1580');
-      expect(card_retrieve_response.shared).to.equal(false);
       expect(card_retrieve_response.source).to.equal('network');
       expect(card_retrieve_response.error).to.be.null;
       expect(card_retrieve_response.created_at).to.be.a('string');
@@ -336,40 +332,41 @@ describe('Accounts - core methods tests', () => {
       const brand = card_retrieve_response.brands?.[0];
       expect(brand).to.exist;
       expect(brand.id).to.equal('pdt_15_brd_1');
+      expect(brand.card_product_id).to.equal('pdt_15');
+      expect(brand.description).to.equal('Chase Sapphire Reserve');
       expect(brand.name).to.equal('Chase Sapphire Reserve');
+      expect(brand.issuer).to.equal('Chase');
+      expect(brand.network).to.equal('visa');
+      expect(brand.type).to.equal('specific');
       expect(brand.url).to.equal('https://static.methodfi.com/card_brands/1b7ccaba6535cb837f802d968add4700.png');
-      expect(brand.art_id).to.be.a('string').and.match(/^art_/);
     });
 
     it('should successfully list card brands for an account.', async () => {
-      const listCardBrands = async () => {
-        return client
-          .accounts(test_credit_card_account.id)
-          .cardBrands
-          .list();
-      };
+      const card_brands = await client
+        .accounts(test_credit_card_account.id)
+        .cardBrands
+        .list();
 
-      const card_brands = await awaitResults(listCardBrands);
       const result = card_brands[0];
 
       expect(result.id).to.equal(card_create_response.id);
       expect(result.account_id).to.equal(test_credit_card_account.id);
-      expect(result.network).to.equal('visa');
       expect(result.status).to.equal('completed');
-      expect(result.issuer).to.equal(card_create_response.issuer);
-      expect(result.last4).to.equal('1580');
-      expect(result.shared).to.equal(false);
       expect(result.source).to.equal('network');
       expect(result.error).to.be.null;
       expect(result.created_at).to.be.a('string');
       expect(result.updated_at).to.be.a('string');
-
+      
       const brand = result.brands?.[0];
       expect(brand).to.exist;
       expect(brand.id).to.equal('pdt_15_brd_1');
+      expect(brand.card_product_id).to.equal('pdt_15');
+      expect(brand.description).to.equal('Chase Sapphire Reserve');
       expect(brand.name).to.equal('Chase Sapphire Reserve');
+      expect(brand.issuer).to.equal('Chase');
+      expect(brand.network).to.equal('visa');
+      expect(brand.type).to.equal('specific');
       expect(brand.url).to.equal('https://static.methodfi.com/card_brands/1b7ccaba6535cb837f802d968add4700.png');
-      expect(brand.art_id).to.be.a('string').and.match(/^art_/);
     });
   });
 
@@ -396,14 +393,14 @@ describe('Accounts - core methods tests', () => {
     });
 
     it('should successfully retrieve a payoff for an account.', async () => {
-      const getPayoffQuotes = async () =>{
+      const payoff_quote_response = async () => {
         return await client
-          .accounts(test_auto_loan_account.id)
-          .payoffs
-          .retrieve(payoff_create_response.id);
+        .accounts(test_auto_loan_account.id)
+        .payoffs
+        .retrieve(payoff_create_response.id);
       };
 
-      const payoff_quote = await awaitResults(getPayoffQuotes);
+      const payoff_quote = await awaitResults(payoff_quote_response);
 
       const expect_results: IAccountPayoff = {
         id: payoff_create_response.id,
@@ -421,14 +418,10 @@ describe('Accounts - core methods tests', () => {
     });
 
     it('should successfully list payoffs for an account.', async () => {
-      const listPayoffQuotes = async () => {
-        return await client
-          .accounts(test_auto_loan_account.id)
-          .payoffs
-          .list();
-      };
-
-      const payoffs = await awaitResults(listPayoffQuotes);
+      const payoffs = await client
+        .accounts(test_auto_loan_account.id)
+        .payoffs
+        .list();
 
       const expect_results = {
         id: payoff_create_response.id,
@@ -518,14 +511,10 @@ describe('Accounts - core methods tests', () => {
     });
 
     it('should successfully retrieve a verification session for an account.', async () => {
-      const getVerificationSession = async () => {
-        return await client
-          .accounts(test_credit_card_account.id)
-          .verificationSessions
-          .retrieve(verification_session_update.id);
-      };
-
-      const verification_session = await awaitResults(getVerificationSession);
+      const verification_session = await client
+        .accounts(test_credit_card_account.id)
+        .verificationSessions
+        .retrieve(verification_session_update.id);
 
       const expect_results: IAccountVerificationSession = {
         id: verification_session_update.id,
@@ -552,14 +541,10 @@ describe('Accounts - core methods tests', () => {
     });
 
     it('should successfully list verification sessions for an account.', async () => {
-      const listVerificationSessions = async () => {
-        return await client
-          .accounts(test_credit_card_account.id)
-          .verificationSessions
-          .list();
-      };
-
-      const verification_sessions = await awaitResults(listVerificationSessions);
+      const verification_sessions = await client
+        .accounts(test_credit_card_account.id)
+        .verificationSessions
+        .list();
 
       const expect_results: IAccountVerificationSession = {
         id: verification_session_update.id,
@@ -619,14 +604,10 @@ describe('Accounts - core methods tests', () => {
     });
 
     it('should successfully list sensitive data for an account.', async () => {
-      const listSensitiveData = async () => {
-        return await client
-          .accounts(test_credit_card_account.id)
-          .sensitive
-          .list();
-      };
-
-      const sensitive_data = await awaitResults(listSensitiveData);
+      const sensitive_data = await client
+        .accounts(test_credit_card_account.id)
+        .sensitive
+        .list();
 
       sensitive_data[0].should.be.eql(sensitive_data_response);
     });
@@ -946,13 +927,13 @@ describe('Accounts - core methods tests', () => {
     it('should successfully retrieve results of an updates request', async () => {
       const getAccountUpdates = async () => {
         return await client
-          .accounts(test_credit_card_account.id)
-          .updates
-          .retrieve(create_updates_response.id);
+        .accounts(test_credit_card_account.id)
+        .updates
+        .retrieve(create_updates_response.id);
       };
 
       const retrieve_updates_response = await awaitResults(getAccountUpdates);
-      
+
       const expect_results: IAccountUpdate = {
         id: create_updates_response.id,
         account_id: test_credit_card_account.id,
diff --git a/test/resources/Entity.tests.ts b/test/resources/Entity.tests.ts
index d42950b..46a37a3 100644
--- a/test/resources/Entity.tests.ts
+++ b/test/resources/Entity.tests.ts
@@ -23,12 +23,15 @@ should();
 
 describe('Entities - core methods tests', () => {
   let entities_create_response: IResponse<IEntity>;
+  let entities_create_response_async: IResponse<IEntity>;
   let entity_with_identity_cap: IResponse<IEntity>;
   let entity_with_vehicle: IResponse<IEntity>;
   let entities_retrieve_response: IResponse<IEntity>;
   let entities_update_response: IResponse<IEntity>;
+  let entities_update_response_async: IResponse<IEntity>;
   let entities_list_response: IResponse<IEntity>[];
   let entities_connect_create_response: IResponse<IEntityConnect>;
+  let entities_connect_create_response_async: IResponse<IEntityConnect>;
   let entities_account_list_response: IResponse<IAccount>[];
   let entities_account_ids: string[];
   let entities_create_credit_score_response: IResponse<IEntityCreditScores>;
@@ -51,7 +54,14 @@ describe('Entities - core methods tests', () => {
         metadata: {},
       });
 
+      entities_create_response_async = await client.entities.create({
+        type: 'individual',
+        individual: {},
+        metadata: {},
+      });
+
       entities_create_response.restricted_subscriptions?.sort();
+      entities_create_response_async.restricted_subscriptions?.sort();
 
       const expect_results: IEntity = {
         id: entities_create_response.id,
@@ -101,7 +111,56 @@ describe('Entities - core methods tests', () => {
         updated_at: entities_create_response.updated_at,
       };
 
+      const expect_results_async: IEntity = {
+        id: entities_create_response_async.id,
+        type: 'individual',
+        individual: {
+          first_name: null,
+          last_name: null,
+          phone: null,
+          dob: null,
+          email: null,
+          ssn: null,
+          ssn_4: null,
+        },
+        address: {
+          line1: null,
+          line2: null,
+          city: null,
+          state: null,
+          zip: null,
+        },
+        vehicle: null,
+        verification: {
+          identity: {
+            verified: false,
+            matched: false,
+            latest_verification_session: null,
+            methods: ['element', 'opal', 'kba'],
+          },
+          phone: {
+            verified: false,
+            latest_verification_session: null,
+            methods: ['element', 'opal', 'sna', 'sms', 'byo_sms'],
+          },
+        },
+        connect: null,
+        credit_score: null,
+        attribute: null,
+        products: [],
+        restricted_products: entities_create_response_async.restricted_products,
+        subscriptions: [],
+        available_subscriptions: [],
+        restricted_subscriptions: entities_create_response_async.restricted_subscriptions,
+        status: 'incomplete',
+        error: null,
+        metadata: {},
+        created_at: entities_create_response_async.created_at,
+        updated_at: entities_create_response_async.updated_at,
+      };
+
       entities_create_response.should.be.eql(expect_results);
+      entities_create_response_async.should.be.eql(expect_results_async);
     });
   });
 
@@ -234,6 +293,70 @@ describe('Entities - core methods tests', () => {
       };
 
       entities_update_response.should.be.eql(expect_results);
+
+      entities_update_response_async = await client.entities.update(
+        entities_create_response_async.id,
+        {
+          individual: {
+            first_name: 'Kevin',
+            last_name: 'Doyle',
+            phone: '+15121231111',
+          },
+        }
+      );
+
+      entities_update_response_async.restricted_subscriptions?.sort();
+      entities_update_response_async.restricted_products?.sort();
+
+      const expect_results_async: IEntity = {
+        id: entities_create_response_async.id,
+        type: 'individual',
+        individual: {
+          first_name: 'Kevin',
+          last_name: 'Doyle',
+          phone: '+15121231111',
+          dob: null,
+          email: null,
+          ssn: null,
+          ssn_4: null,
+        },
+        address: {
+          line1: null,
+          line2: null,
+          city: null,
+          state: null,
+          zip: null,
+        },
+        verification: {
+          identity: {
+            verified: false,
+            matched: true,
+            latest_verification_session: null,
+            methods: ['element', 'opal', 'kba'],
+          },
+          phone: {
+            verified: false,
+            latest_verification_session: null,
+            methods: ['element', 'opal', 'sna', 'sms', 'byo_sms'],
+          },
+        },
+        connect: null,
+        vehicle: null,
+        credit_score: null,
+        attribute: null,
+        products: entities_update_response_async.products,
+        restricted_products: entities_update_response_async.restricted_products,
+        subscriptions: entities_update_response_async.subscriptions,
+        available_subscriptions: entities_update_response_async.available_subscriptions,
+        restricted_subscriptions: entities_update_response_async.restricted_subscriptions,
+        status: 'incomplete',
+        error: null,
+        metadata: {},
+        created_at: entities_update_response_async.created_at,
+        updated_at: entities_update_response_async.updated_at,
+      };
+
+      entities_update_response_async.should.be.eql(expect_results_async);
     });
   });
 
@@ -258,6 +381,16 @@ describe('Entities - core methods tests', () => {
           },
         });
 
+      await client
+        .entities(entities_create_response_async.id)
+        .verificationSessions.create({
+          type: 'phone',
+          method: 'byo_sms',
+          byo_sms: {
+            timestamp: '2021-09-01T00:00:00.000Z',
+          },
+        });
+
       const expect_results: IEntityVerificationSession = {
         id: entities_create_phone_verification_session_response.id,
         entity_id: entities_create_response.id,
@@ -288,6 +421,14 @@ describe('Entities - core methods tests', () => {
           kba: {},
         });
 
+      await client
+        .entities(entities_create_response_async.id)
+        .verificationSessions.create({
+          type: 'identity',
+          method: 'kba',
+          kba: {},
+        });
+
       const expect_results: IEntityVerificationSession = {
         id: entities_create_verification_session_response.id,
         entity_id: entities_create_response.id,
@@ -381,13 +522,10 @@ describe('Entities - core methods tests', () => {
     });
 
     it('should successfully list connections for an entity', async () => {
-      const listConnections = async () => {
-        return await client
-          .entities(entities_create_response.id)
-          .connect.list();
-      };
+      const connections = await client
+        .entities(entities_create_response.id)
+        .connect.list();
 
-      const connections = await awaitResults(listConnections);
       connections[0].accounts = connections[0].accounts?.sort() || null;
 
       const expect_results: IEntityConnect = {
@@ -404,6 +542,60 @@ describe('Entities - core methods tests', () => {
 
       connections[0].should.be.eql(expect_results);
     });
+
+    it('should successfully create a connection for an entity (async).', async () => {
+      entities_connect_create_response_async = await client
+        .entities(entities_create_response_async.id)
+        .connect.create({
+          products: ['card_brand'],
+          subscriptions: ['update'],
+        }, 
+        {}, 
+        {
+          'prefer': 'respond-async',
+        });
+
+      const expect_results: IEntityConnect = {
+        id: entities_connect_create_response_async.id,
+        entity_id: entities_create_response_async.id,
+        status: 'pending',
+        accounts: null,
+        requested_products: ['card_brand'],
+        requested_subscriptions: ['update'],
+        error: null,
+        created_at: entities_connect_create_response_async.created_at,
+        updated_at: entities_connect_create_response_async.updated_at,
+      };
+
+      entities_connect_create_response_async.should.be.eql(expect_results);
+    });
+
+    it('should successfully retrieve results of a connection for an entity (async).', async () => {
+      let entitiesConnectRetrieveResponse = async () => {
+        return await client
+          .entities(entities_create_response_async.id)
+          .connect.retrieve(entities_connect_create_response_async.id);
+      };
+
+      const entities_connect_results_response_async = await awaitResults(entitiesConnectRetrieveResponse);
+
+      entities_connect_results_response_async.accounts =
+        entities_connect_results_response_async.accounts?.sort() || null;
+
+      const expect_results: IEntityConnect = {
+        id: entities_connect_create_response_async.id,
+        entity_id: entities_create_response_async.id,
+        status: 'completed',
+        accounts: entities_connect_results_response_async.accounts,
+        requested_products: ['card_brand'],
+        requested_subscriptions: ['update'],
+        error: null,
+        created_at: entities_connect_results_response_async.created_at,
+        updated_at: entities_connect_results_response_async.updated_at,
+      };
+
+      entities_connect_results_response_async.should.be.eql(expect_results);
+    });
   });
 
   describe('entities.credit_scores', () => {
@@ -750,13 +942,9 @@ describe('Entities - core methods tests', () => {
     });
 
     it('should successfully retrieve the results of a request for a vehicle', async () => {
-      const getVehicles = async () => {
-        return await client
+      const vehicles = await client
           .entities(entity_with_vehicle.id)
           .vehicles.retrieve(entities_create_vehicle_response.id);
-      };
-
-      const vehicles = await awaitResults(getVehicles);
 
       const expect_results: IEntityVehicles = {
         id: entities_create_vehicle_response.id,
@@ -772,13 +960,9 @@ describe('Entities - core methods tests', () => {
     });
 
     it('should successfully list vehicles for an entity', async () => {
-      const listVehicles = async () => {
-        return await client
-          .entities(entity_with_vehicle.id)
-          .vehicles.list();
-      };
-
-      const vehicles = await awaitResults(listVehicles);
+      const vehicles = await client
+        .entities(entity_with_vehicle.id)
+        .vehicles.list();
 
       vehicles[0].should.be.eql(entities_create_vehicle_response);
     });
@@ -798,9 +982,7 @@ describe('Entities - core methods tests', () => {
           latest_request_id:
             entities_retrieve_product_list_response.connect
               ?.latest_request_id || null,
-          latest_successful_request_id:
-            entities_retrieve_product_list_response.connect
-              ?.latest_successful_request_id || null,
+          latest_successful_request_id: entities_retrieve_product_list_response.connect?.latest_successful_request_id || null,
           is_subscribable: true,
           created_at:
             entities_retrieve_product_list_response.connect?.created_at || '',
@@ -814,9 +996,7 @@ describe('Entities - core methods tests', () => {
           latest_request_id:
             entities_retrieve_product_list_response.credit_score
               ?.latest_request_id || null,
-          latest_successful_request_id:
-            entities_retrieve_product_list_response.credit_score
-              ?.latest_successful_request_id || null,
+          latest_successful_request_id: entities_retrieve_product_list_response.credit_score?.latest_successful_request_id || null,
           is_subscribable: true,
           created_at:
             entities_retrieve_product_list_response.credit_score?.created_at ||
@@ -832,9 +1012,7 @@ describe('Entities - core methods tests', () => {
           latest_request_id:
             entities_retrieve_product_list_response.identity
               ?.latest_request_id || null,
-          latest_successful_request_id:
-            entities_retrieve_product_list_response.identity
-              ?.latest_successful_request_id || null,
+          latest_successful_request_id: entities_retrieve_product_list_response.identity?.latest_successful_request_id || null,
           is_subscribable: false,
           created_at:
             entities_retrieve_product_list_response.identity?.created_at || '',
@@ -848,9 +1026,7 @@ describe('Entities - core methods tests', () => {
           latest_request_id:
             entities_retrieve_product_list_response.attribute
               ?.latest_request_id || null,
-          latest_successful_request_id:
-            entities_retrieve_product_list_response.attribute
-              ?.latest_successful_request_id || null,
+          latest_successful_request_id: entities_retrieve_product_list_response.attribute?.latest_successful_request_id || null,
           is_subscribable: true,
           created_at:
             entities_retrieve_product_list_response.attribute?.created_at || '',
@@ -864,9 +1040,7 @@ describe('Entities - core methods tests', () => {
           latest_request_id:
             entities_retrieve_product_list_response.vehicle
               ?.latest_request_id || null,
-          latest_successful_request_id:
-            entities_retrieve_product_list_response.vehicle
-              ?.latest_successful_request_id || null,
+          latest_successful_request_id: entities_retrieve_product_list_response.vehicle?.latest_successful_request_id || null,
           is_subscribable: false,
           created_at: entities_retrieve_product_list_response.vehicle?.created_at || '',
           updated_at: entities_retrieve_product_list_response.vehicle?.updated_at || '',
@@ -878,9 +1052,7 @@ describe('Entities - core methods tests', () => {
           latest_request_id:
             entities_retrieve_product_list_response.manual_connect
               ?.latest_request_id || null,
-          latest_successful_request_id:
-            entities_retrieve_product_list_response.manual_connect
-              ?.latest_successful_request_id || null,
+          latest_successful_request_id: entities_retrieve_product_list_response.manual_connect?.latest_successful_request_id || null,
           is_subscribable: false,
           created_at: entities_retrieve_product_list_response.manual_connect?.created_at || '',
           updated_at: entities_retrieve_product_list_response.manual_connect?.updated_at || '',
diff --git a/test/resources/Event.tests.ts b/test/resources/Event.tests.ts
index be3a5fe..9d8013c 100644
--- a/test/resources/Event.tests.ts
+++ b/test/resources/Event.tests.ts
@@ -97,39 +97,5 @@ describe('Events - core methods tests', () => {
 
       // response.should.be.eql(expect_results);
     });
-
-    it('should simulate an attribute created event', async () => {
-      const event_response = await client.simulate.events.create({
-        type: 'attribute.credit_health_credit_card_usage.increased',
-        entity_id: entity_response.id,
-      });
-
-      expect(event_response).to.eql(null);
-
-      // TODO: Add these tests back once list events are working in dev again.
-      // timeout to allow event to be created
-      // await new Promise((resolve) => { setTimeout(resolve, 5000); });
-
-      // const events_list_response = await client.events.list({
-      //   type: 'attribute.credit_health_credit_card_usage.increased',
-      // });
-
-      // [event_response] = events_list_response;
-
-      // const response = await client.events.retrieve(event_response.id);
-
-      // const expect_results: IEvent = {
-      //   id: event_response.id,
-      //   created_at: event_response.created_at,
-      //   updated_at: event_response.updated_at,
-      //   type: 'attribute.credit_health_credit_card_usage.increased',
-      //   resource_id: event_response.resource_id,
-      //   resource_type: 'attribute',
-      //   data: event_response.data,
-      //   diff: event_response.diff,
-      // };
-
-      // response.should.be.eql(expect_results);
-    });
   });
 });
diff --git a/test/resources/Opal.tests.ts b/test/resources/Opal.tests.ts
new file mode 100644
index 0000000..709b0b1
--- /dev/null
+++ b/test/resources/Opal.tests.ts
@@ -0,0 +1,42 @@
+import { should } from 'chai';
+import { describe } from 'mocha';
+import { client } from '../config';
+import type { IEntity } from '../../src/resources/Entity';
+import type { IOpalToken } from '../../src/resources/Opal';
+import { IResponse } from '../../src/configuration';
+
+should();
+
+describe('Opal - core methods tests', () => {
+  let entity_1_response: IResponse<IEntity>;
+  let opal_create_token_response: IResponse<IOpalToken>;
+
+  before(async () => {
+    entity_1_response = await client.entities.create({
+      type: 'individual',
+      individual: {
+        first_name: 'Kevin',
+        last_name: 'Doyle',
+        dob: '1930-03-11',
+        email: 'kevin.doyle@gmail.com',
+        phone: '+15121231111',
+      },
+    });
+  });
+
+  describe('opal.token.create', () => {
+    it('should successfully create a opal token.', async () => {
+      opal_create_token_response = await client.opal.token.create({
+        entity_id: entity_1_response.id,
+        mode: 'identity_verification',
+        identity_verification: {
+          skip_pii: ['ssn_4'],
+        },
+      });
+
+      opal_create_token_response.should.have.property('token');
+      opal_create_token_response.should.have.property('valid_until');
+      opal_create_token_response.should.have.property('session_id');
+    });
+  });
+});
diff --git a/test/utils.ts b/test/utils.ts
index 42a8976..b62c5af 100644
--- a/test/utils.ts
+++ b/test/utils.ts
@@ -1,10 +1,11 @@
-export const sleep = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));
+export const sleep = (ms: number) =>
+  new Promise((resolve) => setTimeout(resolve, ms));
 
 type AwaitResultsFn = <T>(fn: () => Promise<T>) => Promise<any>;
 
 export const awaitResults: AwaitResultsFn = async (fn) => {
   let result;
-  let retries = 10;
+  let retries = 20;
   while (retries > 0) {
     try {
       result = await fn();
@@ -17,7 +18,14 @@ export const awaitResults: AwaitResultsFn = async (fn) => {
       throw error; // Rethrow the error to fail the test
     }
     retries--;
-  };
+  }
+
+  // Throw error if we exhausted retries without getting completed/failed status
+  if (result && result.status !== 'completed' && result.status !== 'failed') {
+    throw new Error(
+      `awaitResults timed out after 10 retries. Final status: ${result.status}`
+    );
+  }
 
   return result;
 };