From fdf6c4a8aa3ea3fe475a6d7226b64667c40b1527 Mon Sep 17 00:00:00 2001
From: aadamgough <adam@sim.ai>
Date: Sun, 4 Jan 2026 11:18:03 -0800
Subject: [PATCH 1/3] save before deployment fix

---
 apps/sim/app/api/webhooks/trigger/[path]/route.ts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/apps/sim/app/api/webhooks/trigger/[path]/route.ts b/apps/sim/app/api/webhooks/trigger/[path]/route.ts
index 549ce6a78d..0aafa8f84d 100644
--- a/apps/sim/app/api/webhooks/trigger/[path]/route.ts
+++ b/apps/sim/app/api/webhooks/trigger/[path]/route.ts
@@ -123,6 +123,15 @@ export async function POST(
     return authError
   }
 
+  const isGrainVerificationRequest =
+    foundWebhook.provider === 'grain' && (!body || Object.keys(body).length === 0 || !body.type)
+  if (isGrainVerificationRequest) {
+    logger.info(
+      `[${requestId}] Grain verification request detected - returning 200 for reachability test`
+    )
+    return NextResponse.json({ status: 'ok', message: 'Webhook endpoint verified' })
+  }
+
   let preprocessError: NextResponse | null = null
   try {
     preprocessError = await checkWebhookPreprocessing(foundWorkflow, foundWebhook, requestId)

From a6295a31d220cfea07ac251a57112bc1002d8e41 Mon Sep 17 00:00:00 2001
From: aadamgough <adam@sim.ai>
Date: Sun, 4 Jan 2026 11:44:07 -0800
Subject: [PATCH 2/3] moved to helper

---
 .../app/api/webhooks/trigger/[path]/route.ts  | 11 +++----
 apps/sim/lib/webhooks/processor.ts            | 31 +++++++++++++++++++
 2 files changed, 35 insertions(+), 7 deletions(-)

diff --git a/apps/sim/app/api/webhooks/trigger/[path]/route.ts b/apps/sim/app/api/webhooks/trigger/[path]/route.ts
index 0aafa8f84d..9cdff87dc5 100644
--- a/apps/sim/app/api/webhooks/trigger/[path]/route.ts
+++ b/apps/sim/app/api/webhooks/trigger/[path]/route.ts
@@ -5,6 +5,7 @@ import {
   checkWebhookPreprocessing,
   findWebhookAndWorkflow,
   handleProviderChallenges,
+  handleProviderReachabilityTest,
   parseWebhookBody,
   queueWebhookExecution,
   verifyProviderAuth,
@@ -123,13 +124,9 @@ export async function POST(
     return authError
   }
 
-  const isGrainVerificationRequest =
-    foundWebhook.provider === 'grain' && (!body || Object.keys(body).length === 0 || !body.type)
-  if (isGrainVerificationRequest) {
-    logger.info(
-      `[${requestId}] Grain verification request detected - returning 200 for reachability test`
-    )
-    return NextResponse.json({ status: 'ok', message: 'Webhook endpoint verified' })
+  const reachabilityResponse = handleProviderReachabilityTest(foundWebhook, body, requestId)
+  if (reachabilityResponse) {
+    return reachabilityResponse
   }
 
   let preprocessError: NextResponse | null = null
diff --git a/apps/sim/lib/webhooks/processor.ts b/apps/sim/lib/webhooks/processor.ts
index b197a8ef18..7cc6380856 100644
--- a/apps/sim/lib/webhooks/processor.ts
+++ b/apps/sim/lib/webhooks/processor.ts
@@ -121,6 +121,37 @@ export async function handleProviderChallenges(
   return null
 }
 
+/**
+ * Handle provider-specific reachability tests that occur AFTER webhook lookup.
+ *
+ * This function should be called after findWebhookAndWorkflow() but before
+ * checkWebhookPreprocessing() to allow verification requests to bypass deployment checks.
+ *
+ * @param webhook - The webhook record from the database
+ * @param body - The parsed request body
+ * @param requestId - Request ID for logging
+ * @returns NextResponse if this is a verification request, null to continue normal flow
+ */
+export function handleProviderReachabilityTest(
+  webhook: any,
+  body: any,
+  requestId: string
+): NextResponse | null {
+  const provider = webhook?.provider
+
+  if (provider === 'grain') {
+    const isVerificationRequest = !body || Object.keys(body).length === 0 || !body.type
+    if (isVerificationRequest) {
+      logger.info(
+        `[${requestId}] Grain reachability test detected - returning 200 for webhook verification`
+      )
+      return NextResponse.json({ status: 'ok', message: 'Webhook endpoint verified' })
+    }
+  }
+
+  return null
+}
+
 export async function findWebhookAndWorkflow(
   options: WebhookProcessorOptions
 ): Promise<{ webhook: any; workflow: any } | null> {

From 240a27f5eebc5693d660a8a6aa7805cd9abc74d7 Mon Sep 17 00:00:00 2001
From: aadamgough <adam@sim.ai>
Date: Sun, 4 Jan 2026 11:45:00 -0800
Subject: [PATCH 3/3] removed comment

---
 apps/sim/lib/webhooks/processor.ts | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/apps/sim/lib/webhooks/processor.ts b/apps/sim/lib/webhooks/processor.ts
index 7cc6380856..96cf01b8f3 100644
--- a/apps/sim/lib/webhooks/processor.ts
+++ b/apps/sim/lib/webhooks/processor.ts
@@ -124,9 +124,6 @@ export async function handleProviderChallenges(
 /**
  * Handle provider-specific reachability tests that occur AFTER webhook lookup.
  *
- * This function should be called after findWebhookAndWorkflow() but before
- * checkWebhookPreprocessing() to allow verification requests to bypass deployment checks.
- *
  * @param webhook - The webhook record from the database
  * @param body - The parsed request body
  * @param requestId - Request ID for logging