diff --git a/src/game/engine/scenes/headless/player_api_main.gd b/src/game/engine/scenes/headless/player_api_main.gd
index 0470be20..71f1615f 100644
--- a/src/game/engine/scenes/headless/player_api_main.gd
+++ b/src/game/engine/scenes/headless/player_api_main.gd
@@ -475,6 +475,21 @@ func _handle_request(req: Dictionary) -> void:
 		"view":
 			var view_json: String = String(_api.view_json(target_slot))
 			_emit_response_with_view(rid_int, has_id, view_json)
+		"suggest":
+			# Stage 6.1.6 — read-only "what would the in-box AI do here".
+			# `suggest_json` returns a full `{"ok":...,"actions":[...]}`
+			# envelope; splice in the request id and forward verbatim.
+			# Side-effect-free: no state mutation, no turn advance.
+			var suggest_str: String = String(_api.suggest_json(target_slot))
+			var suggest_env: Dictionary = JSON.parse_string(suggest_str) as Dictionary
+			if suggest_env.is_empty():
+				_emit_response_error(
+					rid_int, has_id, "internal", "gdext returned non-JSON suggest envelope"
+				)
+				return
+			if has_id:
+				suggest_env["id"] = rid_int
+			_write_line(JSON.stringify(suggest_env))
 		"act":
 			var action_payload: Dictionary = req.get("action", {}) as Dictionary
 			if action_payload.is_empty():