From 6ee73fa22f71e038d4547a58d2096be7ac7a75c4 Mon Sep 17 00:00:00 2001
From: waleed <walif6@gmail.com>
Date: Thu, 12 Feb 2026 12:28:47 -0800
Subject: [PATCH] update change detection to account for synthetic tool ids

---
 apps/sim/lib/workflows/comparison/normalize.test.ts | 12 ++++++++++++
 apps/sim/lib/workflows/comparison/normalize.ts      | 10 +++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/apps/sim/lib/workflows/comparison/normalize.test.ts b/apps/sim/lib/workflows/comparison/normalize.test.ts
index 2cf9b925a..9aa6c9b12 100644
--- a/apps/sim/lib/workflows/comparison/normalize.test.ts
+++ b/apps/sim/lib/workflows/comparison/normalize.test.ts
@@ -645,6 +645,18 @@ describe('Workflow Normalization Utilities', () => {
       const result = filterSubBlockIds(ids)
       expect(result).toEqual(['signingSecret'])
     })
+
+    it.concurrent('should exclude synthetic tool-input subBlock IDs', () => {
+      const ids = [
+        'toolConfig',
+        'toolConfig-tool-0-query',
+        'toolConfig-tool-0-url',
+        'toolConfig-tool-1-status',
+        'systemPrompt',
+      ]
+      const result = filterSubBlockIds(ids)
+      expect(result).toEqual(['systemPrompt', 'toolConfig'])
+    })
   })
 
   describe('normalizeTriggerConfigValues', () => {
diff --git a/apps/sim/lib/workflows/comparison/normalize.ts b/apps/sim/lib/workflows/comparison/normalize.ts
index 4a8ce18a2..70a584141 100644
--- a/apps/sim/lib/workflows/comparison/normalize.ts
+++ b/apps/sim/lib/workflows/comparison/normalize.ts
@@ -411,7 +411,14 @@ export function extractBlockFieldsForComparison(block: BlockState): ExtractedBlo
 }
 
 /**
- * Filters subBlock IDs to exclude system and trigger runtime subBlocks.
+ * Pattern matching synthetic subBlock IDs created by ToolSubBlockRenderer.
+ * These IDs follow the format `{subBlockId}-tool-{index}-{paramId}` and are
+ * mirrors of values already stored in toolConfig.value.tools[N].params.
+ */
+const SYNTHETIC_TOOL_SUBBLOCK_RE = /-tool-\d+-/
+
+/**
+ * Filters subBlock IDs to exclude system, trigger runtime, and synthetic tool subBlocks.
  *
  * @param subBlockIds - Array of subBlock IDs to filter
  * @returns Filtered and sorted array of subBlock IDs
@@ -422,6 +429,7 @@ export function filterSubBlockIds(subBlockIds: string[]): string[] {
       if (TRIGGER_RUNTIME_SUBBLOCK_IDS.includes(id)) return false
       if (SYSTEM_SUBBLOCK_IDS.some((sysId) => id === sysId || id.startsWith(`${sysId}_`)))
         return false
+      if (SYNTHETIC_TOOL_SUBBLOCK_RE.test(id)) return false
       return true
     })
     .sort()