diff --git a/services/web/frontend/js/features/pdf-preview/util/output-files.js b/services/web/frontend/js/features/pdf-preview/util/output-files.js
index 0eca1e6aa0..e7178982c1 100644
--- a/services/web/frontend/js/features/pdf-preview/util/output-files.js
+++ b/services/web/frontend/js/features/pdf-preview/util/output-files.js
@@ -188,6 +188,26 @@ export const buildRuleCounts = (entries = []) => {
   return counts
 }
 
+export const buildRuleDeltas = (ruleCounts, previousRuleCounts) => {
+  const counts = {}
+
+  // keys that are defined in the current log entries
+  for (const [key, value] of Object.entries(ruleCounts)) {
+    const previousValue = previousRuleCounts[key] ?? 0
+    counts[`delta_${key}`] = value - previousValue
+  }
+
+  // keys that are no longer defined in the current log entries
+  for (const [key, value] of Object.entries(previousRuleCounts)) {
+    if (!(key in counts)) {
+      counts[key] = 0
+      counts[`delta_${key}`] = -value
+    }
+  }
+
+  return counts
+}
+
 function buildURL(file, pdfDownloadDomain) {
   if (file.build && pdfDownloadDomain) {
     // Downloads from the compiles domain must include a build id.
diff --git a/services/web/frontend/js/shared/context/detach-compile-context.tsx b/services/web/frontend/js/shared/context/detach-compile-context.tsx
index 9bc4c58280..56f5130955 100644
--- a/services/web/frontend/js/shared/context/detach-compile-context.tsx
+++ b/services/web/frontend/js/shared/context/detach-compile-context.tsx
@@ -68,6 +68,7 @@ export const DetachCompileProvider: FC = ({ children }) => {
     setChangedAt: _setChangedAt,
     clearCache: _clearCache,
     syncToEntry: _syncToEntry,
+    recordAction: _recordAction,
   } = localCompileContext
 
   const [animateCompileDropdownArrow] = useDetachStateWatcher(
@@ -363,6 +364,13 @@ export const DetachCompileProvider: FC = ({ children }) => {
     'detacher'
   )
 
+  const recordAction = useDetachAction(
+    'record-action',
+    _recordAction,
+    'detached',
+    'detacher'
+  )
+
   useCompileTriggers(startCompile, setChangedAt)
   useLogEvents(setShowLogs)
 
@@ -420,6 +428,7 @@ export const DetachCompileProvider: FC = ({ children }) => {
       setChangedAt,
       cleanupCompileResult,
       syncToEntry,
+      recordAction,
     }),
     [
       animateCompileDropdownArrow,
@@ -472,6 +481,7 @@ export const DetachCompileProvider: FC = ({ children }) => {
       setChangedAt,
       cleanupCompileResult,
       syncToEntry,
+      recordAction,
     ]
   )
 
diff --git a/services/web/frontend/js/shared/context/local-compile-context.tsx b/services/web/frontend/js/shared/context/local-compile-context.tsx
index 38a65659d4..77dd2dc6a7 100644
--- a/services/web/frontend/js/shared/context/local-compile-context.tsx
+++ b/services/web/frontend/js/shared/context/local-compile-context.tsx
@@ -22,6 +22,7 @@ import {
 import {
   buildLogEntryAnnotations,
   buildRuleCounts,
+  buildRuleDeltas,
   handleLogFiles,
   handleOutputFiles,
 } from '../../features/pdf-preview/util/output-files'
@@ -97,6 +98,7 @@ export type CompileContext = {
   setChangedAt: (value: any) => void
   clearCache: () => void
   syncToEntry: (value: any, keepCurrentView?: boolean) => void
+  recordAction: (action: string) => void
 }
 
 export const LocalCompileContext = createContext<CompileContext | undefined>(
@@ -113,7 +115,7 @@ export const LocalCompileProvider: FC = ({ children }) => {
 
   const { pdfPreviewOpen } = useLayoutContext()
 
-  const { features, alphaProgram } = useUserContext()
+  const { features, alphaProgram, labsProgram } = useUserContext()
 
   const { fileTreeData } = useFileTreeData()
   const { findEntityByPath } = useFileTreePathContext()
@@ -351,12 +353,23 @@ export const LocalCompileProvider: FC = ({ children }) => {
 
   const hasCompileLogsEvents = useFeatureFlag('compile-log-events')
 
+  // compare log entry counts with the previous compile, and record actions between compiles
+  // these are refs rather than state so they don't trigger the effect to run
+  const previousRuleCountsRef = useRef<Record<string, number> | null>(null)
+  const recordedActionsRef = useRef<Record<string, boolean>>({})
+  const recordAction = useCallback((action: string) => {
+    recordedActionsRef.current[action] = true
+  }, [])
+
   // handle the data returned from a compile request
   // note: this should _only_ run when `data` changes,
   // the other dependencies must all be static
   useEffect(() => {
     const abortController = new AbortController()
 
+    const recordedActions = recordedActionsRef.current
+    recordedActionsRef.current = {}
+
     if (data) {
       if (data.clsiServerId) {
         setClsiServerId(data.clsiServerId) // set in scope, for PdfSynctexController
@@ -413,13 +426,26 @@ export const LocalCompileProvider: FC = ({ children }) => {
                 )
               }
 
-              if (hasCompileLogsEvents) {
+              if (hasCompileLogsEvents || labsProgram) {
+                const ruleCounts = buildRuleCounts(
+                  result.logEntries.all
+                ) as Record<string, number>
+
+                const previousRuleCounts = previousRuleCountsRef.current
+                previousRuleCountsRef.current = ruleCounts
+
+                const ruleDeltas = previousRuleCounts
+                  ? buildRuleDeltas(ruleCounts, previousRuleCounts)
+                  : {}
+
                 sendMB('compile-log-entries', {
                   status: data.status,
                   stopOnFirstError: data.options.stopOnFirstError,
                   isAutoCompileOnLoad: !!data.options.isAutoCompileOnLoad,
                   isAutoCompileOnChange: !!data.options.isAutoCompileOnChange,
-                  ...buildRuleCounts(result.logEntries.all),
+                  ...recordedActions,
+                  ...ruleCounts,
+                  ...ruleDeltas,
                 })
               }
             }
@@ -492,6 +518,8 @@ export const LocalCompileProvider: FC = ({ children }) => {
     data,
     ide,
     alphaProgram,
+    labsProgram,
+    features,
     hasCompileLogsEvents,
     hasPremiumCompile,
     isProjectOwner,
@@ -664,6 +692,7 @@ export const LocalCompileProvider: FC = ({ children }) => {
       setChangedAt,
       cleanupCompileResult,
       syncToEntry,
+      recordAction,
     }),
     [
       animateCompileDropdownArrow,
@@ -715,6 +744,7 @@ export const LocalCompileProvider: FC = ({ children }) => {
       setShowLogs,
       toggleLogs,
       syncToEntry,
+      recordAction,
     ]
   )