diff --git a/share/twn_api.json b/share/twn_api.json
index 478fb2b..255886a 100644
--- a/share/twn_api.json
+++ b/share/twn_api.json
@@ -268,6 +268,24 @@
                 { "name": "value", "type": "Rect" },
                 { "name": "identity", "type": "char *" }
             ]
+        },
+
+        "profile_start": {
+            "module": "util",
+            "symbol": "profile_start",
+            "header": "twn_util.h",
+            "params": [
+                { "name": "profile", "type": "char *" }
+            ]
+        },
+
+        "profile_end": {
+            "module": "util",
+            "symbol": "profile_end",
+            "header": "twn_util.h",
+            "params": [
+                { "name": "profile", "type": "char *" }
+            ]
         }
     },