diff --git a/generativeai/src/main/java/com/google/ai/client/generativeai/type/FunctionDeclarations.kt b/generativeai/src/main/java/com/google/ai/client/generativeai/type/FunctionDeclarations.kt
index 35c06b7e..262e0759 100644
--- a/generativeai/src/main/java/com/google/ai/client/generativeai/type/FunctionDeclarations.kt
+++ b/generativeai/src/main/java/com/google/ai/client/generativeai/type/FunctionDeclarations.kt
@@ -160,6 +160,16 @@ abstract class FunctionDeclaration(val name: String, val description: String) {
   abstract suspend fun execute(part: FunctionCallPart): JSONObject
 }
 
+/**
+ * Represents a parameter for a declared function
+ *
+ * @property name: The name of the parameter
+ * @property description: The description of what the parameter should contain or represent
+ * @property format: format information for the parameter, this can include bitlength in the case of
+ *   int/float or keywords like "enum" for the string type
+ * @property enum: contains the enum values for a string enum
+ * @property type: contains the type info and parser
+ */
 class ParameterDeclaration<T>(
   val name: String,
   val description: String,
diff --git a/generativeai/src/main/java/com/google/ai/client/generativeai/type/FunctionParameter.kt b/generativeai/src/main/java/com/google/ai/client/generativeai/type/FunctionParameter.kt
index cb9ccbe1..8d2f21e9 100644
--- a/generativeai/src/main/java/com/google/ai/client/generativeai/type/FunctionParameter.kt
+++ b/generativeai/src/main/java/com/google/ai/client/generativeai/type/FunctionParameter.kt
@@ -16,4 +16,5 @@
 
 package com.google.ai.client.generativeai.type
 
+
 class FunctionParameter<T>(val name: String, val description: String, val type: FunctionType<T>) {}
diff --git a/generativeai/src/main/java/com/google/ai/client/generativeai/type/Type.kt b/generativeai/src/main/java/com/google/ai/client/generativeai/type/Type.kt
index c1fea3cf..c220031d 100644
--- a/generativeai/src/main/java/com/google/ai/client/generativeai/type/Type.kt
+++ b/generativeai/src/main/java/com/google/ai/client/generativeai/type/Type.kt
@@ -20,6 +20,13 @@ import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.jsonArray
 import org.json.JSONObject
 
+/**
+ * Represents and passes the type information for an automated function call.
+ *
+ * @property name: the enum name of the type
+ * @property parse: the deserialization function
+ * @property T: the type of the object that this maps to in code.
+ */
 class FunctionType<T>(val name: String, val parse: (String?) -> T?) {
   companion object {
     val STRING = FunctionType<String>("STRING") { it }