diff --git a/static/app/views/insights/pages/agents/utils/referrers.tsx b/static/app/views/insights/pages/agents/utils/referrers.tsx
index ae58e8ef0591..0ee66a18aee9 100644
--- a/static/app/views/insights/pages/agents/utils/referrers.tsx
+++ b/static/app/views/insights/pages/agents/utils/referrers.tsx
@@ -1,4 +1,5 @@
 export enum Referrer {
+  TRACE_DRAWER = 'api.insights.agent-monitoring.trace-drawer',
   TRACE_DRAWER_TOOL_USAGE = 'api.insights.agent-monitoring.trace-drawer-tool-usage',
   TRACES_TABLE = 'api.insights.agent-monitoring.traces-table',
   ONBOARDING = 'api.insights.agent-monitoring.onboarding',
diff --git a/static/app/views/performance/traceDetails/traceDrawer/details/highlightedAttributes.spec.tsx b/static/app/views/performance/traceDetails/traceDrawer/details/highlightedAttributes.spec.tsx
index 277571eb5766..7c627bbcb5d8 100644
--- a/static/app/views/performance/traceDetails/traceDrawer/details/highlightedAttributes.spec.tsx
+++ b/static/app/views/performance/traceDetails/traceDrawer/details/highlightedAttributes.spec.tsx
@@ -222,6 +222,37 @@ describe('getHighlightedSpanAttributes', () => {
     expect(result.find(attr => attr.name === 'Result Size')?.value).toBe('4.1 kB');
   });
 
+  it('uses the AI trace drawer referrer for the tool result size baseline', async () => {
+    const baselineRequest = MockApiClient.addMockResponse({
+      url: '/organizations/org-slug/events/',
+      body: {data: [{'avg(gen_ai.tool.call.result.size)': 2000}]},
+    });
+    const result = getHighlightedSpanAttributes({
+      spanId: '123',
+      projectId: 1,
+      attributes: {
+        'gen_ai.operation.type': 'tool',
+        'gen_ai.tool.name': 'search',
+        'gen_ai.tool.call.result.size': 4000,
+      },
+    });
+    const size = result.find(attr => attr.name === 'Result Size');
+    if (!isValidElement(size?.value)) {
+      throw new Error('Expected tool result size to be a React element');
+    }
+    render(size.value);
+
+    expect(await screen.findByText('100% larger than avg 2 kB')).toBeInTheDocument();
+    expect(baselineRequest).toHaveBeenCalledWith(
+      '/organizations/org-slug/events/',
+      expect.objectContaining({
+        query: expect.objectContaining({
+          referrer: 'api.insights.agent-monitoring.trace-drawer',
+        }),
+      })
+    );
+  });
+
   it('should include tokens attribute when values are present', () => {
     const attributes = {
       'gen_ai.operation.type': 'ai_client',
diff --git a/static/app/views/performance/traceDetails/traceDrawer/details/highlightedAttributes.tsx b/static/app/views/performance/traceDetails/traceDrawer/details/highlightedAttributes.tsx
index 3456f383da47..54fb0fee97fc 100644
--- a/static/app/views/performance/traceDetails/traceDrawer/details/highlightedAttributes.tsx
+++ b/static/app/views/performance/traceDetails/traceDrawer/details/highlightedAttributes.tsx
@@ -157,7 +157,7 @@ function ToolResultSize({
           project: [projectId],
           statsPeriod: '24h',
           query: search.formatString(),
-          referrer: 'api.explore.spans-aggregates-table',
+          referrer: Referrer.TRACE_DRAWER,
         },
         staleTime: 60_000,
       }