diff --git a/hyperliquid/info.py b/hyperliquid/info.py
index a86ac80..e886e3b 100644
--- a/hyperliquid/info.py
+++ b/hyperliquid/info.py
@@ -40,17 +40,24 @@ def __init__(
         self.asset_to_sz_decimals = {}
 
         # spot assets start at 10000
+        # Build index-based token lookup to handle cases where token indices don't match array positions
+        # Fixes issue #275: https://github.com/hyperliquid-dex/hyperliquid-python-sdk/issues/275
+        token_by_index = {token["index"]: token for token in spot_meta["tokens"]}
+
         for spot_info in spot_meta["universe"]:
             asset = spot_info["index"] + 10000
             self.coin_to_asset[spot_info["name"]] = asset
             self.name_to_coin[spot_info["name"]] = spot_info["name"]
-            base, quote = spot_info["tokens"]
-            base_info = spot_meta["tokens"][base]
-            quote_info = spot_meta["tokens"][quote]
-            self.asset_to_sz_decimals[asset] = base_info["szDecimals"]
-            name = f'{base_info["name"]}/{quote_info["name"]}'
-            if name not in self.name_to_coin:
-                self.name_to_coin[name] = spot_info["name"]
+            base_idx, quote_idx = spot_info["tokens"]
+            # Use index-based lookup instead of array position to avoid IndexError
+            # when testnet API returns malformed spot_meta with token indices exceeding array bounds
+            base_info = token_by_index.get(base_idx)
+            quote_info = token_by_index.get(quote_idx)
+            if base_info is not None and quote_info is not None:
+                self.asset_to_sz_decimals[asset] = base_info["szDecimals"]
+                name = f'{base_info["name"]}/{quote_info["name"]}'
+                if name not in self.name_to_coin:
+                    self.name_to_coin[name] = spot_info["name"]
 
         perp_dex_to_offset = {"": 0}
         if perp_dexs is None: