--- a/mc_server.py
+++ b/mc_server.py
@@ -118,6 +118,30 @@
     raise RuntimeError("obs/info contains neither 'image' nor 'pov'")
 
 
+_INFO_SKIP = {"pov", "image", "location_stats", "equipped_items", "custom"}
+
+
+def info_for_client(info: dict) -> dict:
+    """Judge-relevant fields of the sim info (the released server returned none)."""
+    out = {k: convert_numpy_types(dict(v) if isinstance(v, dict) else v)
+           for k, v in (info or {}).items() if k not in _INFO_SKIP}
+    inv = {}
+    for slot in (info or {}).get("inventory", {}).values():
+        if slot.get("type") not in (None, "none", "air"):
+            inv[slot["type"]] = inv.get(slot["type"], 0) + int(slot.get("quantity", 0))
+    out["inventory"] = inv
+    raw = (info or {}).get("inventory", {})
+    hotbar = []
+    for i in range(9):
+        slot = raw.get(i) or raw.get(str(i)) or {}
+        t = slot.get("type")
+        hotbar.append(None if t in (None, "none", "air") else f"{t} x{int(slot.get('quantity', 0))}")
+    out["hotbar"] = hotbar
+    hand = (info or {}).get("equipped_items", {}).get("mainhand", {})
+    out["mainhand"] = hand.get("type") if isinstance(hand, dict) else None
+    return out
+
+
 # =========================
 # API 实现
 # =========================
@@ -224,6 +248,10 @@
         return err(f"session '{session_id}' not found")
 
     try:
+        if session.env_type == "minestudio":
+            # MineRL clears its seed at the end of every reset (even a failed one), so a retried reset
+            # would build a random world; re-apply the create_env seed each time
+            session.env.env.seed(session.env.seed)
         result = session.env.reset()
 
         if isinstance(result, tuple):
@@ -276,6 +304,7 @@
             "screenshot": screenshot,
             "reward": float(reward),
             "done": done,
+            "info": info_for_client(info),
             "timing": {
                 "env_step_ms": round((t2 - t1) * 1000, 1),
                 "encode_ms": round((t4 - t3) * 1000, 1),