diff --git a/share/twn_api.json b/share/twn_api.json
index 87a7c4a..2d98125 100644
--- a/share/twn_api.json
+++ b/share/twn_api.json
@@ -349,6 +349,26 @@
             "restriction": "parameters"
         },
 
+        "log_string": {
+            "module": "util",
+            "symbol": "log_string",
+            "header": "twn_util.h",
+            "params": [
+                { "name": "value", "type": "char *" },
+                { "name": "identity", "type": "char *", "default": {} }
+            ]
+        },
+
+        "log_float": {
+            "module": "util",
+            "symbol": "log_float",
+            "header": "twn_util.h",
+            "params": [
+                { "name": "value", "type": "float" },
+                { "name": "identity", "type": "char *", "default": {} }
+            ]
+        },
+
         "log_vec2": {
             "module": "util",
             "symbol": "log_vec2",