diff --git a/app/api/cloud/[trpc]/route.ts b/app/api/cloud/[trpc]/route.ts
index b7a27ae39..5752a353f 100644
--- a/app/api/cloud/[trpc]/route.ts
+++ b/app/api/cloud/[trpc]/route.ts
@@ -17,6 +17,7 @@ const handlerNodeRoutes = (req: Request) => fetchRequestHandler({
 
     // -> Capture node errors
     await posthogCaptureServerException(error, {
+      domain: 'trpc-onerror',
       runtime: 'nodejs',
       endpoint: path ?? 'unknown',
       method: req.method,
diff --git a/src/common/components/ErrorBoundary.tsx b/src/common/components/ErrorBoundary.tsx
index 101bb9705..ecc10ab2f 100644
--- a/src/common/components/ErrorBoundary.tsx
+++ b/src/common/components/ErrorBoundary.tsx
@@ -62,7 +62,7 @@ export class ErrorBoundary extends React.Component<ErrorBoundaryProps, ErrorBoun
 
     // Capture exception in PostHog
     posthogCaptureException(error, {
-      $exception_source: 'error-boundary',
+      $exception_domain: 'client-error-boundary',
       componentName,
       componentStack: errorInfo.componentStack,
     });
diff --git a/src/common/logger/logger.client.ts b/src/common/logger/logger.client.ts
index 23b6c3bd7..23fe126cf 100644
--- a/src/common/logger/logger.client.ts
+++ b/src/common/logger/logger.client.ts
@@ -125,7 +125,7 @@ class LoggerImplementation implements ClientLogger {
       // Only send to PostHog if we have a real Error with stack trace
       if (error) {
         posthogCaptureException(error, {
-          $exception_source: 'logger',
+          $exception_domain: 'client-logger',
           level: level,
           source: finalSource,
           message: message,
diff --git a/src/server/posthog/posthog.server.ts b/src/server/posthog/posthog.server.ts
index 09e263460..ceb4863ca 100644
--- a/src/server/posthog/posthog.server.ts
+++ b/src/server/posthog/posthog.server.ts
@@ -32,6 +32,7 @@ function _getPosthogServer(): PostHog | null {
 export async function posthogCaptureServerException(
   error: Error | unknown,
   context: {
+    domain: string; // e.g. 'trpc', which will become 'server-trpc'
     runtime: 'edge' | 'nodejs';
     endpoint: string;
     method?: string;
@@ -49,7 +50,7 @@ export async function posthogCaptureServerException(
     // Use the immediate variant for better performance in serverless environments
     await client.captureExceptionImmediate(error, distinctId, {
       // Error source identification
-      $exception_source: 'server',
+      $exception_domain: `server-${context.domain}`,
       $exception_runtime: context.runtime,
       // Context properties
       runtime: context.runtime,