diff --git a/e2e/playwright/flow-tests.spec.ts b/e2e/playwright/flow-tests.spec.ts
index a72f098a4..7b04d3200 100644
--- a/e2e/playwright/flow-tests.spec.ts
+++ b/e2e/playwright/flow-tests.spec.ts
@@ -8094,3 +8094,34 @@ test('Sketch on face', async ({ page }) => {
 const sketch002 = extrude(${[5, 5]} + 7, sketch002)`
   await expect(page.locator('.cm-content')).toHaveText(result2.regExp)
 })
+
+test('Typing KCL errors induces a badge on the error logs pane button', async ({
+  page,
+}) => {
+  const u = await getUtils(page)
+
+  // Load the app with the working starter code
+  await page.addInitScript((code) => {
+    localStorage.setItem('persistCode', code)
+  }, bracket)
+
+  await page.setViewportSize({ width: 1200, height: 500 })
+  await u.waitForAuthSkipAppStart()
+
+  // wait for execution done
+  await u.openDebugPanel()
+  await u.expectCmdLog('[data-message-type="execution-done"]')
+  await u.closeDebugPanel()
+
+  // Ensure no badge is present
+  const errorLogsButton = page.getByRole('button', { name: 'KCL Errors pane' })
+  await expect(errorLogsButton).not.toContainText('notification')
+
+  // Delete a character to break the KCL
+  await u.openKclCodePanel()
+  await page.getByText('extrude(').click()
+  await page.keyboard.press('Backspace')
+
+  // Ensure that a badge appears on the button
+  await expect(errorLogsButton).toContainText('notification')
+})
diff --git a/src/components/ModelingSidebar/ModelingPanes/index.ts b/src/components/ModelingSidebar/ModelingPanes/index.ts
index 1f1e7f2f4..a3e373fb7 100644
--- a/src/components/ModelingSidebar/ModelingPanes/index.ts
+++ b/src/components/ModelingSidebar/ModelingPanes/index.ts
@@ -14,6 +14,7 @@ import { MemoryPane, MemoryPaneMenu } from './MemoryPane'
 import { KclErrorsPane, LogsPane } from './LoggingPanes'
 import { DebugPane } from './DebugPane'
 import { FileTreeInner, FileTreeMenu } from 'components/FileTree'
+import { useKclContext } from 'lang/KclProvider'
 
 export type SidebarType =
   | 'code'
@@ -25,6 +26,14 @@ export type SidebarType =
   | 'lspMessages'
   | 'variables'
 
+/**
+ * This interface can be extended as more context is needed for the panes
+ * to determine if they should show their badges or not.
+ */
+interface PaneCallbackProps {
+  kclContext: ReturnType<typeof useKclContext>
+}
+
 export type SidebarPane = {
   id: SidebarType
   title: string
@@ -33,6 +42,7 @@ export type SidebarPane = {
   Content: ReactNode | React.FC
   Menu?: ReactNode | React.FC
   hideOnPlatform?: 'desktop' | 'web'
+  showBadge?: (props: PaneCallbackProps) => boolean | number
 }
 
 export const sidebarPanes: SidebarPane[] = [
@@ -74,6 +84,7 @@ export const sidebarPanes: SidebarPane[] = [
     icon: faExclamationCircle,
     Content: KclErrorsPane,
     keybinding: 'Shift + E',
+    showBadge: ({ kclContext }) => kclContext.errors.length,
   },
   {
     id: 'debug',
diff --git a/src/components/ModelingSidebar/ModelingSidebar.tsx b/src/components/ModelingSidebar/ModelingSidebar.tsx
index c432f8dde..abc58ba71 100644
--- a/src/components/ModelingSidebar/ModelingSidebar.tsx
+++ b/src/components/ModelingSidebar/ModelingSidebar.tsx
@@ -12,6 +12,7 @@ import { useModelingContext } from 'hooks/useModelingContext'
 import { CustomIconName } from 'components/CustomIcon'
 import { useCommandsContext } from 'hooks/useCommandsContext'
 import { IconDefinition } from '@fortawesome/free-solid-svg-icons'
+import { useKclContext } from 'lang/KclProvider'
 
 interface ModelingSidebarProps {
   paneOpacity: '' | 'opacity-20' | 'opacity-40'
@@ -19,6 +20,7 @@ interface ModelingSidebarProps {
 
 export function ModelingSidebar({ paneOpacity }: ModelingSidebarProps) {
   const { commandBarSend } = useCommandsContext()
+  const kclContext = useKclContext()
   const { settings } = useSettingsAuthContext()
   const onboardingStatus = settings.context.app.onboardingStatus
   const { send, context } = useModelingContext()
@@ -62,6 +64,15 @@ export function ModelingSidebar({ paneOpacity }: ModelingSidebarProps) {
     [sidebarPanes, showDebugPanel.current]
   )
 
+  const paneBadgeMap: Record<SidebarType, number | boolean> = useMemo(() => {
+    return filteredPanes.reduce((acc, pane) => {
+      if (pane.showBadge) {
+        acc[pane.id] = pane.showBadge({ kclContext })
+      }
+      return acc
+    }, {} as Record<SidebarType, number | boolean>)
+  }, [kclContext.errors])
+
   const togglePane = useCallback(
     (newPane: SidebarType) => {
       send({
@@ -120,6 +131,7 @@ export function ModelingSidebar({ paneOpacity }: ModelingSidebarProps) {
                 paneIsOpen={context.store?.openPanes.includes(pane.id)}
                 onClick={() => togglePane(pane.id)}
                 aria-pressed={context.store?.openPanes.includes(pane.id)}
+                showBadge={paneBadgeMap[pane.id]}
               />
             ))}
           </ul>
@@ -186,12 +198,14 @@ interface ModelingPaneButtonProps
   }
   onClick: () => void
   paneIsOpen?: boolean
+  showBadge?: boolean | number
 }
 
 function ModelingPaneButton({
   paneConfig,
   onClick,
   paneIsOpen,
+  showBadge,
   ...props
 }: ModelingPaneButtonProps) {
   useHotkeys(paneConfig.keybinding, onClick, {
@@ -223,6 +237,23 @@ function ModelingPaneButton({
         {paneConfig.title}
         {paneIsOpen !== undefined ? ` pane` : ''}
       </span>
+      {!!showBadge && (
+        <p
+          className={
+            'absolute m-0 p-0 -top-1 -right-1 w-3 h-3 flex items-center justify-center text-[10px] font-semibold text-white bg-primary hue-rotate-90 rounded-full border border-chalkboard-10 dark:border-chalkboard-80'
+          }
+        >
+          <span className="sr-only">&nbsp;has&nbsp;</span>
+          {typeof showBadge === 'number' ? (
+            <span>{showBadge}</span>
+          ) : (
+            <span className="sr-only">a</span>
+          )}
+          <span className="sr-only">
+            &nbsp;notification{Number(showBadge) > 1 ? 's' : ''}
+          </span>
+        </p>
+      )}
       <Tooltip
         position="right"
         contentClassName="max-w-none flex items-center gap-4"