diff --git a/piker/brokers/binance/broker.py b/piker/brokers/binance/broker.py
index 78b86413..270088b2 100644
--- a/piker/brokers/binance/broker.py
+++ b/piker/brokers/binance/broker.py
@@ -61,7 +61,11 @@ from piker.clearing._messages import (
     Status,
     Order,
 )
-from .venues import Pair
+from .venues import (
+    Pair,
+    _futes_ws,
+    _testnet_futes_ws,
+)
 from .api import Client
 
 log = get_logger('piker.brokers.binance')
@@ -213,33 +217,41 @@ async def open_trade_dialog(
 
 ) -> AsyncIterator[dict[str, Any]]:
 
+    # TODO: how do we set this from the EMS such that
+    # positions are loaded from the correct venue on the user
+    # stream at startup? (that is in an attempt to support both
+    # spot and futes markets?)
+    # - I guess we just want to instead start 2 separate user
+    #   stream tasks right? unless we want another actor pool?
+    #   XXX: see issue: <urlhere>
+    venue_name: str = 'futes'
+    venue_mode: str = 'usdtm_futes'
+    account_name: str = 'usdtm'
+    use_testnet: bool = False
+
     async with open_cached_client('binance') as client:
-        for key, subconf in client.conf.items():
-            if subconf.get('api_key'):
-                break
+        subconf: dict = client.conf[venue_name]
+        use_testnet = subconf.get('use_testnet', False)
 
         # XXX: if no futes.api_key or spot.api_key has been set we
         # always fall back to the paper engine!
-        else:
+        if not subconf.get('api_key'):
             await ctx.started('paper')
             return
 
     async with (
         open_cached_client('binance') as client,
     ):
-        client.mkt_mode: str = 'usdtm_futes'
+        client.mkt_mode: str = venue_mode
 
-        # if client.
-        venue: str = client.mkt_mode
+        # TODO: map these wss urls depending on spot or futes
+        # setting passed when this task is spawned?
+        wss_url: str = _futes_ws if not use_testnet else _testnet_futes_ws
 
         wss: NoBsWs
         async with (
             client.manage_listen_key() as listen_key,
-            open_autorecon_ws(
-                f'wss://stream.binancefuture.com/ws/{listen_key}',
-                # f'wss://stream.binance.com:9443/ws/{listen_key}',
-            ) as wss,
-
+            open_autorecon_ws(f'{wss_url}/ws/{listen_key}') as wss,
         ):
             nsid: int = time_ns()
             await wss.send_msg({
@@ -270,7 +282,7 @@ async def open_trade_dialog(
             positions: list[BrokerdPosition] = []
 
             for resp_dict in msg['result']:
-                resp = resp_dict['res']
+                resp: dict = resp_dict['res']
                 req: str = resp_dict['req']
 
                 # @account response should be something like:
@@ -329,7 +341,9 @@ async def open_trade_dialog(
                         bs_mktid: str = entry['symbol']
                         entry_size: float = float(entry['positionAmt'])
 
-                        pair: Pair | None = client._venue2pairs[venue].get(bs_mktid)
+                        pair: Pair | None = client._venue2pairs[
+                            venue_mode
+                        ].get(bs_mktid)
                         if (
                             pair
                             and entry_size > 0
@@ -338,7 +352,7 @@ async def open_trade_dialog(
 
                             ppmsg = BrokerdPosition(
                                 broker='binance',
-                                account='binance.usdtm',
+                                account=f'binance.{account_name}',
 
                                 # TODO: maybe we should be passing back
                                 # a `MktPair` here?
@@ -357,6 +371,13 @@ async def open_trade_dialog(
 
             await ctx.started((positions, list(accounts)))
 
+            # TODO: package more state tracking into the dialogs API?
+            # - hmm maybe we could include `OrderDialogs.dids:
+            #   bidict` as part of the interface and then ask for
+            #   a reqid field to be passed at init?
+            #   |-> `OrderDialog(reqid_field='orderId')` kinda thing?
+            # - also maybe bundle in some kind of dialog to account
+            #   table?
             dialogs = OrderDialogs()
             dids: dict[str, int] = bidict()
 
@@ -404,7 +425,8 @@ async def open_trade_dialog(
                 )
                 tn.start_soon(
                     handle_order_updates,
-                    venue,
+                    venue_mode,
+                    account_name,
                     client,
                     ems_stream,
                     wss,
@@ -417,6 +439,7 @@ async def open_trade_dialog(
 
 async def handle_order_updates(
     venue: str,
+    account_name: str,
     client: Client,
     ems_stream: tractor.MsgStream,
     wss: NoBsWs,
@@ -574,6 +597,9 @@ async def handle_order_updates(
                     time_ns=time_ns(),
                     # reqid=reqid,
                     reqid=oid,
+
+                    # TODO: i feel like we don't need to make the
+                    # ems and upstream clients aware of this?
                     # account='binance.usdtm',
 
                     status=status,
@@ -622,7 +648,7 @@ async def handle_order_updates(
                 pair: Pair | None = client._venue2pairs[venue].get(bs_mktid)
                 ppmsg = BrokerdPosition(
                     broker='binance',
-                    account='binance.usdtm',
+                    account=f'binance.{account_name}',
 
                     # TODO: maybe we should be passing back
                     # a `MktPair` here?