diff --git a/credentials/WpformsApi.credentials.ts b/credentials/WpformsApi.credentials.ts
new file mode 100644
index 0000000..6bd9443
--- /dev/null
+++ b/credentials/WpformsApi.credentials.ts
@@ -0,0 +1,29 @@
+import type {
+	ICredentialType,
+	INodeProperties,
+} from 'n8n-workflow';
+
+/**
+ * WPForms API credentials.
+ *
+ * @since 1.0
+ */
+export class WpformsApi implements ICredentialType {
+	name = 'wpformsApi';
+	displayName = 'WPForms API';
+	documentationUrl = 'https://wpforms.com/docs/n8n-addon/?utm_source=n8n&utm_medium=referral&utm_campaign=n8n_integration&utm_content=wpforms_trigger_docs&utm_locale=en_US';
+	properties: INodeProperties[] = [
+		{
+			displayName: 'Secret Key',
+			name: 'secretKey',
+			type: 'string',
+			typeOptions: {
+				password: true,
+			},
+			default: '',
+			required: true,
+			description: 'The secret key used to verify webhook requests',
+			hint: 'Copy the value from your WPForms n8n settings. <a href="https://wpforms.com/docs/n8n-addon/?utm_source=n8n&utm_medium=referral&utm_campaign=n8n_integration&utm_content=wpforms_trigger_docs&utm_locale=en_US" target="_blank">Read more</a>',
+		},
+	];
+}
diff --git a/nodes/WPForms/WpformsTrigger.node.ts b/nodes/WPForms/WpformsTrigger.node.ts
index 774082c..3aa7128 100644
--- a/nodes/WPForms/WpformsTrigger.node.ts
+++ b/nodes/WPForms/WpformsTrigger.node.ts
@@ -26,6 +26,12 @@ export class WpformsTrigger implements INodeType {
 		},
 		inputs: [], // Trigger nodes have no inputs.
 		outputs: [NodeConnectionType.Main],
+		credentials: [
+			{
+				name: 'wpformsApi',
+				required: true,
+			},
+		],
 		webhooks: [
 			{
 				name: 'default',
@@ -36,18 +42,6 @@ export class WpformsTrigger implements INodeType {
 			},
 		],
 		properties: [
-			{
-				displayName: 'Secret Key',
-				name: 'scrKey',
-				type: 'string',
-				typeOptions: {
-					password: true,
-				},
-				default: '',
-				required: true,
-				description: 'The secret key used to verify the request',
-				hint: 'Copy the value from your WPForms n8n settings. <a href="https://wpforms.com/docs/n8n-addon/?utm_source=n8n&utm_medium=referral&utm_campaign=n8n_integration&utm_content=wpforms_trigger_docs&utm_locale=en_US">Read more</a>',
-			},
 			{
 				displayName: 'Output Schema',
 				name: 'outputSchema',
@@ -88,8 +82,11 @@ export class WpformsTrigger implements INodeType {
 		// Access the raw HTTP request from n8n's webhook context.
 		const request = this.getRequestObject();
 
+		// Get credentials
+		const credentials = await this.getCredentials('wpformsApi');
+		const secretKey = credentials.secretKey as string;
+
 		// Node parameters configured by the user in the UI
-		const secretKey = this.getNodeParameter('scrKey') as string;
 		const timestampSkew = this.getNodeParameter('timestampSkew') as number;
 		const outputSchema = this.getNodeParameter('outputSchema') as string;
 
diff --git a/package.json b/package.json
index 7f2dcd4..a17cd28 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,9 @@
   ],
   "n8n": {
     "n8nNodesApiVersion": 1,
-    "credentials": [],
+    "credentials": [
+      "dist/credentials/WpformsApi.credentials.js"
+    ],
     "nodes": [
       "dist/nodes/WPForms/WpformsTrigger.node.js"
     ]