diff --git a/src/game/engine/src/modules/tech/tech_web.gd b/src/game/engine/src/modules/tech/tech_web.gd
index c0a2883d..6b0f081e 100644
--- a/src/game/engine/src/modules/tech/tech_web.gd
+++ b/src/game/engine/src/modules/tech/tech_web.gd
@@ -1,2 +1,15 @@
 class_name TechWeb
 extends RefCounted
+## Placeholder TechWeb. Real tech graph/research lives on backlog until the
+## mc-tech crate + GdTechWeb binding land. These no-ops keep existing callers
+## (turn_manager, tech_tree scene, auto_play) from crashing at runtime.
+
+var _nodes: Dictionary = {}
+
+
+func build(_techs: Array) -> void:
+	pass
+
+
+func apply_heritage_tech(_player: RefCounted) -> void:
+	pass