From 1a4e4c5e72d8d49ef8b72097cbc4764229e1d260 Mon Sep 17 00:00:00 2001
From: Benjamin Schroth <68321970+schrothbn@users.noreply.github.com>
Date: Tue, 8 Jul 2025 12:39:47 +0200
Subject: [PATCH] fix(AI Agent Node): Prevent fallback input to be added in
 version <2.1 (#17094)

---
 .../nodes-langchain/nodes/agents/Agent/V2/AgentV2.node.ts  | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/packages/@n8n/nodes-langchain/nodes/agents/Agent/V2/AgentV2.node.ts b/packages/@n8n/nodes-langchain/nodes/agents/Agent/V2/AgentV2.node.ts
index e72349de57..4a4097d2f1 100644
--- a/packages/@n8n/nodes-langchain/nodes/agents/Agent/V2/AgentV2.node.ts
+++ b/packages/@n8n/nodes-langchain/nodes/agents/Agent/V2/AgentV2.node.ts
@@ -114,7 +114,7 @@ export class AgentV2 implements INodeType {
 				((hasOutputParser, needsFallback) => {
 					${getInputs.toString()};
 					return getInputs(hasOutputParser, needsFallback)
-				})($parameter.hasOutputParser === undefined || $parameter.hasOutputParser === true, $parameter.needsFallback === undefined || $parameter.needsFallback === true)
+				})($parameter.hasOutputParser === undefined || $parameter.hasOutputParser === true, $parameter.needsFallback !== undefined && $parameter.needsFallback === true)
 			}}`,
 			outputs: [NodeConnectionTypes.Main],
 			properties: [
@@ -148,11 +148,6 @@ export class AgentV2 implements INodeType {
 					type: 'boolean',
 					default: false,
 					noDataExpression: true,
-					displayOptions: {
-						show: {
-							'@version': [{ _cnd: { gte: 2.1 } }],
-						},
-					},
 				},
 				{
 					displayName: `Connect an <a data-action='openSelectiveNodeCreator' data-action-parameter-connectiontype='${NodeConnectionTypes.AiOutputParser}'>output parser</a> on the canvas to specify the output format you require`,