diff --git a/scripts/properties/entity.gd b/scripts/properties/entity.gd
new file mode 100644
index 0000000..131d0c8
--- /dev/null
+++ b/scripts/properties/entity.gd
@@ -0,0 +1,81 @@
+extends Reference
+
+class_name GDB_Entity
+
+var _properties := [].duplicate()
+var _property_ids := [].duplicate()
+
+################
+# public stuff #
+################
+func get_properties() -> Array:
+	return _properties
+
+func get_property_ids() -> Array:
+	return _property_ids
+
+func get_property(index : int) -> Object:
+	if index < 0 || index >= _properties.size():
+		return null
+	return _properties[index]
+
+func get_property_id(index : int) -> String:
+	if index < 0 || index >= _property_ids.size():
+		return ""
+	return _property_ids[index]
+
+func get_property_by_id(id : String) -> Object:
+	return get_property(find_property_by_id(id))
+
+func add_property(id : String, property : Object, index := -1) -> void:
+	if !GDB_Property.is_valid_property(property):
+		printerr("GDB_Entity: attempted to add invalid property.")
+		return
+	
+	if find_property(property) >= 0:
+		return
+	
+	if find_property_by_id(id) >= 0:
+		printerr("GDB_Entity: duplicate property id")
+		return
+	
+	if index < 0:
+		index = _properties.size()
+	index = min(index, _properties.size())
+	_properties.insert(index, property)
+	_property_ids.insert(index, id)
+	emit_signal("property_added", index)
+
+func remove_property(property : Object) -> bool:
+	var index := find_property(property)
+	if index < 0:
+		return false
+	
+	_properties.remove(index)
+	_property_ids.remove(index)
+	emit_signal("property_removed", index, property)
+	return true
+
+func remove_property_at(index : int) -> bool:
+	if index < 0 || index >= _properties.size():
+		return false
+	return remove_property(_properties[index])
+
+func find_property(property : Object) -> int:
+	return _properties.find(property)
+
+func find_property_by_id(id : String) -> int:
+	return _property_ids.find(id)
+
+################
+# static stuff #
+################
+static func is_valid_entity(object : Object) -> bool:
+	return object != null \
+		&& object.has_method("get_properties")
+
+###########
+# signals #
+###########
+signal property_added(index)
+signal property_removed(index, property)
diff --git a/scripts/properties/property.gd b/scripts/properties/property.gd
new file mode 100644
index 0000000..9b7f515
--- /dev/null
+++ b/scripts/properties/property.gd
@@ -0,0 +1,92 @@
+extends Reference
+
+class_name GDB_Property
+
+# special types
+const TYPE_HEADER = -1
+
+var _name := ""
+var _icon : Texture = null
+var _value = null
+var _type := TYPE_INT
+
+################
+# overridables #
+################
+func get_name() -> String:
+	return _name
+
+func set_name(name : String) -> void:
+	if _name != name:
+		_name = name
+		emit_signal("name_changed")
+
+func get_icon() -> Texture:
+	return _icon
+
+func set_icon(icon : Texture) -> void:
+	if _icon != icon:
+		_icon = icon
+		emit_signal("icon_changed")
+
+func get_value():
+	return _value
+
+func set_value(value) -> void:
+	if value != _value:
+		_value = value
+		emit_signal("value_changed")
+
+func get_type() -> int:
+	return _type
+
+func set_type(type : int) -> void:
+	if type != _type:
+		_type = type
+	emit_signal("type_changed")
+
+################
+# static stuff #
+################
+static func is_valid_property(object : Object) -> bool:
+	return object != null \
+		&& object.has_method("get_name") \
+		&& object.has_method("get_value") \
+		&& object.has_method("get_type")
+
+static func get_prop_icon(property : Object) -> Texture:
+	var icon : Texture = null
+	if property.has_method("get_icon"):
+		icon = property.get_icon() as Texture
+	else:
+		icon = property.get("icon") as Texture
+	return icon
+
+static func is_prop_value_valid(property : Object, value) -> bool:
+	if property.has_method("is_value_valud"):
+		return property.is_value_valid(value)
+	
+	match property.get_type():
+		TYPE_HEADER:
+			return false
+		TYPE_INT:
+			return value is int
+		TYPE_REAL:
+			return value is float
+		TYPE_STRING:
+			return value is String
+		_: # TODO: more default checks
+			return true
+
+static func get_prop_value_as_string(property : Object) -> String:
+	if property.has_method("get_value_as_string"):
+		return property.get_value_as_string()
+	return str(property.get_value())
+
+###########
+# signals #
+###########
+signal name_changed()
+signal icon_changed()
+signal value_changed()
+signal type_changed()