From 8635dcde2351abb57593f3cecda9495aa645e9b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ra=C3=BAl=20G=C3=B3mez=20Morales?= <raul00gm@gmail.com>
Date: Sat, 30 May 2026 10:58:50 +0200
Subject: [PATCH] fix(HighLevel Node): Encode contact lookup query parameters
 (#31365)

Co-authored-by: Dawid Myslak <dawid.myslak@gmail.com>
---
 .../v1/description/ContactDescription.ts      | 14 +++++++-
 .../v1/test/ContactDescription.test.ts        | 36 +++++++++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 packages/nodes-base/nodes/HighLevel/v1/test/ContactDescription.test.ts

diff --git a/packages/nodes-base/nodes/HighLevel/v1/description/ContactDescription.ts b/packages/nodes-base/nodes/HighLevel/v1/description/ContactDescription.ts
index 0b29b34f3a0..c3242e59155 100644
--- a/packages/nodes-base/nodes/HighLevel/v1/description/ContactDescription.ts
+++ b/packages/nodes-base/nodes/HighLevel/v1/description/ContactDescription.ts
@@ -100,7 +100,7 @@ export const contactOperations: INodeProperties[] = [
 				routing: {
 					request: {
 						method: 'GET',
-						url: '=/contacts/lookup?email={{$parameter.email}}&phone={{$parameter.phone}}',
+						url: '/contacts/lookup',
 					},
 					output: {
 						postReceive: [
@@ -830,6 +830,12 @@ const lookupProperties: INodeProperties[] = [
 			},
 		},
 		default: '',
+		routing: {
+			send: {
+				type: 'query',
+				property: 'email',
+			},
+		},
 	},
 	{
 		displayName: 'Phone',
@@ -844,6 +850,12 @@ const lookupProperties: INodeProperties[] = [
 			},
 		},
 		default: '',
+		routing: {
+			send: {
+				type: 'query',
+				property: 'phone',
+			},
+		},
 	},
 ];
 
diff --git a/packages/nodes-base/nodes/HighLevel/v1/test/ContactDescription.test.ts b/packages/nodes-base/nodes/HighLevel/v1/test/ContactDescription.test.ts
new file mode 100644
index 00000000000..66d7c78b1f4
--- /dev/null
+++ b/packages/nodes-base/nodes/HighLevel/v1/test/ContactDescription.test.ts
@@ -0,0 +1,36 @@
+import type { INodeProperties, INodePropertyOptions } from 'n8n-workflow';
+
+import { contactFields, contactOperations } from '../description/ContactDescription';
+
+// Reach into the actual routing config so the test breaks if the lookup
+// operation stops sending its inputs as discrete query parameters.
+const lookupOperation = (contactOperations[0].options as INodePropertyOptions[]).find(
+	(option) => option.value === 'lookup',
+);
+
+const findLookupField = (name: string): INodeProperties => {
+	const field = contactFields.find(
+		(candidate) =>
+			candidate.name === name &&
+			((candidate.displayOptions?.show?.operation as string[] | undefined) ?? []).includes(
+				'lookup',
+			),
+	);
+
+	if (!field) {
+		throw new Error(`Expected to find lookup field "${name}"`);
+	}
+
+	return field;
+};
+
+describe('HighLevel V1 - Contact Lookup query parameters', () => {
+	it('builds the request from a static path, not by interpolating user input into the URL', () => {
+		expect(lookupOperation?.routing?.request?.url).toBe('/contacts/lookup');
+	});
+
+	it('sends email and phone as discrete query parameters', () => {
+		expect(findLookupField('email').routing?.send).toEqual({ type: 'query', property: 'email' });
+		expect(findLookupField('phone').routing?.send).toEqual({ type: 'query', property: 'phone' });
+	});
+});