diff --git a/proto/semantic/api/v1/code_analysis.proto b/proto/semantic/api/v1/code_analysis.proto
index 11ff46940..010c241de 100644
--- a/proto/semantic/api/v1/code_analysis.proto
+++ b/proto/semantic/api/v1/code_analysis.proto
@@ -153,6 +153,7 @@ message Blob {
   string content = 1;
   string path = 2;
   string language = 3;
+  string oid = 4;
 }
 
 message BlobPair {
@@ -165,6 +166,7 @@ message File {
   string language = 2;
   repeated Symbol symbols = 3;
   repeated ParseError errors = 4;
+  string blob_oid = 5;
 }
 
 message Symbol {
diff --git a/src/Semantic/Api/Bridge.hs b/src/Semantic/Api/Bridge.hs
index 0a657a469..d20989e38 100644
--- a/src/Semantic/Api/Bridge.hs
+++ b/src/Semantic/Api/Bridge.hs
@@ -97,8 +97,8 @@ instance APIBridge T.Text Data.Language where
 
 instance APIBridge API.Blob Data.Blob where
   bridging = iso apiBlobToBlob blobToApiBlob where
-    blobToApiBlob Data.Blob{..} = API.Blob (toText blobSource) (T.pack blobPath) (bridging # blobLanguage)
-    apiBlobToBlob API.Blob{..} = Data.Blob (fromText content) (T.unpack path) (language ^. bridging) mempty
+    blobToApiBlob Data.Blob{..} = API.Blob (toText blobSource) (T.pack blobPath) (bridging # blobLanguage) blobOid
+    apiBlobToBlob API.Blob{..} = Data.Blob (fromText content) (T.unpack path) (language ^. bridging) oid
 
 
 instance APIConvert API.BlobPair Data.BlobPair where
diff --git a/src/Semantic/Api/Symbols.hs b/src/Semantic/Api/Symbols.hs
index a514d9851..d2a866c1f 100644
--- a/src/Semantic/Api/Symbols.hs
+++ b/src/Semantic/Api/Symbols.hs
@@ -65,7 +65,7 @@ parseSymbols blobs = ParseTreeSymbolResponse . V.fromList . toList <$> distribut
     go :: (Member (Error SomeException) sig, Member Task sig, Carrier sig m) => Blob -> m File
     go blob@Blob{..} = (doParse blob >>= withSomeTerm (renderToSymbols blob)) `catchError` (\(SomeException e) -> pure $ errorFile (show e))
       where
-        errorFile e = File (pack blobPath) (bridging # blobLanguage) mempty (V.fromList [ParseError (T.pack e)])
+        errorFile e = File (pack blobPath) (bridging # blobLanguage) mempty (V.fromList [ParseError (T.pack e)]) blobOid
 
         symbolsToSummarize :: [Text]
         symbolsToSummarize = ["Function", "Method", "Class", "Module", "Call", "Send"]
@@ -74,7 +74,7 @@ parseSymbols blobs = ParseTreeSymbolResponse . V.fromList . toList <$> distribut
         renderToSymbols blob@Blob{..} term = pure $ either (errorFile . show) (tagsToFile blob) (runTagging blob symbolsToSummarize term)
 
         tagsToFile :: Blob -> [Tag] -> File
-        tagsToFile Blob{..} tags = File (pack blobPath) (bridging # blobLanguage) (V.fromList (fmap tagToSymbol tags)) mempty
+        tagsToFile Blob{..} tags = File (pack blobPath) (bridging # blobLanguage) (V.fromList (fmap tagToSymbol tags)) mempty blobOid
 
         tagToSymbol :: Tag -> Symbol
         tagToSymbol Tag{..}
diff --git a/src/Semantic/Api/V1/CodeAnalysisPB.hs b/src/Semantic/Api/V1/CodeAnalysisPB.hs
index d9675814d..0a3e8b0bc 100644
--- a/src/Semantic/Api/V1/CodeAnalysisPB.hs
+++ b/src/Semantic/Api/V1/CodeAnalysisPB.hs
@@ -1019,6 +1019,7 @@ data Blob = Blob
   { content :: Text
   , path :: Text
   , language :: Text
+  , oid :: Text
   } deriving stock (Eq, Ord, Show, Generic)
     deriving anyclass (Proto3.Named, NFData)
 
@@ -1027,6 +1028,7 @@ instance FromJSONPB Blob where
     <$> obj .: "content"
     <*> obj .: "path"
     <*> obj .: "language"
+    <*> obj .: "oid"
 
 instance ToJSONPB Blob where
   toJSONPB Blob{..} = object
@@ -1034,12 +1036,14 @@ instance ToJSONPB Blob where
       "content" .= content
     , "path" .= path
     , "language" .= language
+    , "oid" .= oid
     ]
   toEncodingPB Blob{..} = pairs
     [
       "content" .= content
     , "path" .= path
     , "language" .= language
+    , "oid" .= oid
     ]
 
 instance FromJSON Blob where
@@ -1055,11 +1059,13 @@ instance Proto3.Message Blob where
       encodeMessageField 1 content
     , encodeMessageField 2 path
     , encodeMessageField 3 language
+    , encodeMessageField 4 oid
     ]
   decodeMessage _ = Blob
     <$> at decodeMessageField 1
     <*> at decodeMessageField 2
     <*> at decodeMessageField 3
+    <*> at decodeMessageField 4
   dotProto = undefined
 
 data BlobPair = BlobPair
@@ -1108,6 +1114,7 @@ data File = File
   , language :: Text
   , symbols :: Vector Symbol
   , errors :: Vector ParseError
+  , blobOid :: Text
   } deriving stock (Eq, Ord, Show, Generic)
     deriving anyclass (Proto3.Named, NFData)
 
@@ -1117,6 +1124,7 @@ instance FromJSONPB File where
     <*> obj .: "language"
     <*> obj .: "symbols"
     <*> obj .: "errors"
+    <*> obj .: "blobOid"
 
 instance ToJSONPB File where
   toJSONPB File{..} = object
@@ -1125,6 +1133,7 @@ instance ToJSONPB File where
     , "language" .= language
     , "symbols" .= symbols
     , "errors" .= errors
+    , "blobOid" .= blobOid
     ]
   toEncodingPB File{..} = pairs
     [
@@ -1132,6 +1141,7 @@ instance ToJSONPB File where
     , "language" .= language
     , "symbols" .= symbols
     , "errors" .= errors
+    , "blobOid" .= blobOid
     ]
 
 instance FromJSON File where
@@ -1148,12 +1158,14 @@ instance Proto3.Message File where
     , encodeMessageField 2 language
     , encodeMessageField 3 (Proto3.NestedVec symbols)
     , encodeMessageField 4 (Proto3.NestedVec errors)
+    , encodeMessageField 5 blobOid
     ]
   decodeMessage _ = File
     <$> at decodeMessageField 1
     <*> at decodeMessageField 2
     <*> (nestedvec <$> at decodeMessageField 3)
     <*> (nestedvec <$> at decodeMessageField 4)
+    <*> at decodeMessageField 5
   dotProto = undefined
 
 data Symbol = Symbol