diff --git a/data/apps/tests/get_positions.cfg b/data/apps/tests/get_positions.cfg
index 0295244..b8d66ce 100644
--- a/data/apps/tests/get_positions.cfg
+++ b/data/apps/tests/get_positions.cfg
@@ -21,6 +21,15 @@
                 "read_only": "ALPACA_SANDBOX"
             }
         }
+        , "GEMINI-SNDBX": {
+            "accounting": {
+                "enabled": true
+                , "streaming": false
+            }
+            , "credentials_key": {
+                "read_only": "GEMINI_SANDBOX"
+            }
+        }
     }
     , "refdata": @inc=http://${CONFIG_SVC_HOST}:6789/refdata/refdata
     , "redis": @inc=http://${CONFIG_SVC_HOST}:6789/apps/common/redis
diff --git a/data/refdata/exchange_instruments.cfg b/data/refdata/exchange_instruments.cfg
index 7e9656d..0dc886a 100644
--- a/data/refdata/exchange_instruments.cfg
+++ b/data/refdata/exchange_instruments.cfg
@@ -409,405 +409,26 @@
             #     }
             # },
         }
-    },
-    #*******************************************************************************
-    #*******************************************************************************
-    #*******************************************************************************
-    #
-    # ------------------------ A
-    #
-    # , "ASD-SPOT": {
-    #     "aliases": [
-    #         "ASD-MD"
-    #     ]
-    #     , "instruments": {
-    #         "PAIR-ASD-USDT": {
-    #             "md_symbol": "ASD/USDT"
-    #             , "trade_symbol": "ASD/USDT"
-    #         }
-    #         , "PAIR-BTC-USDT": {
-    #             "md_symbol": "BTC/USDT"
-    #             , "trade_symbol": "BTC/USDT"
-    #         }
-    #         , "PAIR-ETH-USDT": {
-    #             "md_symbol": "ETH/USDT"
-    #             , "trade_symbol": "ETH/USDT"
-    #         }
-    #     }
-    # }
-    # #
-    # # ------------------------ B
-    # #
-    # , "BITSTAMP": {
-    #     "aliases": [
-    #         "BITSTAMP-MD"
-    #     ]
-    #     , "instruments": {
-    #         "PAIR-EUR-USD": {
-    #             "md_symbol": "eurusd"
-    #             , "trade_symbol": "eurusd"
-    #         }
-    #         , "PAIR-XRP-EUR": {
-    #             "md_symbol": "xrpeur"
-    #             , "trade_symbol": "xrpeur"
-    #         }
-    #         , "PAIR-XRP-USD": {
-    #             "md_symbol": "xrpusd"
-    #             , "trade_symbol": "xrpusd"
-    #         }
-    #     }
-    # }
-    # , "BNB_US": {
-    #     "aliases": [
-    #         "BNB_US-MD"
-    #     ]
-    #     , "instruments": {
-    #         "PAIR-BTC-USD": {
-    #             "md_symbol": "BTCUSD"
-    #             , "trade_symbol": "BTCUSD"
-    #         }
-    #         , "PAIR-USDT-USD": {
-    #             "md_symbol": "USDTUSD"
-    #             , "trade_symbol": "USDTUSD"
-    #         }
-    #         , "PAIR-XRP-USD": {
-    #             "md_symbol": "XRPUSD"
-    #             , "trade_symbol": "XRPUSD"
-    #         }
-    #     }
-    # }
-    # , "BNBFUT-COIN": {
-    #     "aliases": [
-    #         "BNBFUT-COIN-MD"
-    #         , "BNBFUT-COIN-TST"
-    #     ]
-    #     , "instruments": {
-    #         "PERPC-BTC-USD": {
-    #             "md_symbol": "BTCUSD_PERP"
-    #             , "trade_symbol": "BTCUSD_PERP"
-    #         }
-    #         , "PERPC-DOGE-USD": {
-    #             "md_symbol": "DOGEUSD_PERP"
-    #             , "trade_symbol": "DOGEUSD_PERP"
-    #         }
-    #         , "PERPC-ETH-USD": {
-    #             "md_symbol": "ETHUSD_PERP"
-    #             , "trade_symbol": "ETHUSD_PERP"
-    #         }
-    #         , "PERPC-LINK-USD": {
-    #             "md_symbol": "LINKUSD_PERP"
-    #             , "trade_symbol": "LINKUSD_PERP"
-    #         }
-    #         , "PERPC-LTC-USD": {
-    #             "md_symbol": "LTCUSD_PERP"
-    #             , "trade_symbol": "LTCUSD_PERP"
-    #         }
-    #         , "PERPC-MATIC-USD": {
-    #             "md_symbol": "MATICUSD_PERP",
-    #             "trade_symbol": "MATICUSD_PERP"
-    #         }
-    #     }
-    # }
-    # #******************************************************************
-    # #******** C O M M A S (here)
-    # #******************************************************************
-    # , "BTSO": {
-    #     "aliases": [
-    #         "BTSO-MD",
-    #         "BTSO-BKTST",
-    #         "BTSO-TST"
-    #     ],
-    #     "instruments": {
-    #         "PAIR-BTC-MXN": {
-    #             "md_symbol": "btc_mxn",
-    #             "trade_symbol": "btc_mxn"
-    #         },
-    #         "PAIR-XRP-MXN": {
-    #             "md_symbol": "xrp_mxn",
-    #             "trade_symbol": "xrp_mxn"
-    #         },
-    #         "PAIR-XRP-USD": {
-    #             "md_symbol": "xrp_usd",
-    #             "trade_symbol": "xrp_usd"
-    #         },
-    #         "PAIR-USD-MXN": {
-    #             "md_symbol": "usd_mxn",
-    #             "trade_symbol": "usd_mxn"
-    #         }
-    #     }
-    # }
-    # , "BYBIT": {
-    #     "aliases": [
-    #         "BYBIT-MD"
-    #     ],
-    #     "instruments": {
-    #         "PAIR-GENE-USDT": {
-    #             "md_symbol": "GENEUSDT",
-    #             "trade_symbol": "GENEUSDT"
-    #         },
-    #         "PAIR-USDC-USDT": {
-    #             "md_symbol": "USDCUSDT",
-    #             "trade_symbol": "USDCUSDT"
-    #         },
-    #         "PAIR-ETH-USDT": {
-    #             "md_symbol": "ETHUSDT",
-    #             "trade_symbol": "ETHUSDT"
-    #         },
-    #         "PAIR-BTC-USDT": {
-    #             "md_symbol": "BTCUSDT",
-    #             "trade_symbol": "BTCUSDT"
-    #         },
-    #         "PAIR-MATIC-USDT": {
-    #             "md_symbol": "MATICUSDT",
-    #             "trade_symbol": "MATICUSDT"
-    #         },
-    #         "PAIR-LINK-USDT": {
-    #             "md_symbol": "LINKUSDT",
-    #             "trade_symbol": "LINKUSDT"
-    #         },
-    #         "PAIR-DOGE-USDT": {
-    #             "md_symbol": "DOGEUSDT",
-    #             "trade_symbol": "DOGEUSDT"
-    #         },
-    #     }
-    # }
-    # , "BYBITFUT": {
-    #     "aliases": [
-    #         "BYBITFUT-MD"
-    #     ],
-    #     "instruments": {
-    #         "PERP-BTC-USDT": {
-    #             "md_symbol": "BTCUSDT",
-    #             "trade_symbol": "BTCUSDT"
-    #         },
-    #         "PERP-ETH-USDT": {
-    #             "md_symbol": "ETHUSDT",
-    #             "trade_symbol": "ETHUSDT"
-    #         },
-    #         "PERP-MATIC-USDT": {
-    #             "md_symbol": "MATICUSDT",
-    #             "trade_symbol": "MATICUSDT"
-    #         },
-    #         "PERP-LINK-USDT": {
-    #             "md_symbol": "LINKUSDT",
-    #             "trade_symbol": "LINKUSDT"
-    #         },
-    #         "PERP-LTC-USDT": {
-    #             "md_symbol": "LTCUSDT",
-    #             "trade_symbol": "LTCUSDT"
-    #         },
-    #         "PERP-DOGE-USDT": {
-    #             "md_symbol": "DOGEUSDT",
-    #             "trade_symbol": "DOGEUSDT"
-    #         },
-    #     },
-    # }
-    # #
-    # # ------------------------ C
-    # #
-    # , "COINBS_INTL": {
-    #     "aliases": [
-    #         "COINBS_INTL-MD", "COINBS_INTL-SNDBX", "COINBS_INTL-SNDBX-MD"
-    #     ],
-    #     "instruments": {
-    #         "PERP-BTC-USDC": {
-    #             "md_symbol": "BTC-PERP",
-    #             "trade_symbol": "BTC-PERP"
-    #         },
-    #         "PERP-ETH-USDC": {
-    #             "md_symbol": "ETH-PERP",
-    #             "trade_symbol": "ETH-PERP"
-    #         },
-    #     }
-    # }
-    # , "COINEX": {
-    #     "aliases": [
-    #         "COINEX-MD"
-    #     ],
-    #     "instruments": {
-    #         "PAIR-GENE-USDT": {
-    #             "md_symbol": "GENEUSDT",
-    #             "trade_symbol": "GENEUSDT"
-    #         },
-    #     }
-    # }
-    # #
-    # # ------------------------ D
-    # #
-    # , "DEXALOT": {
-    #     "aliases": [
-    #         "DEXALOT-MD"
-    #     ],
-    #     "instruments": {
-    #         "PAIR-AVAX-USDT": {
-    #             "md_symbol": "AVAX/USDt",
-    #             "trade_symbol": "AVAX/USDt"
-    #         },
-    #     }
-    # }
-    # #
-    # # ------------------------ F
-    # #
-    # , "FIREFLY": {
-    #     "aliases": [
-    #         "FIREFLY-MD"
-    #     ],
-    #     "instruments": {
-    #         "PERP-ETH-USD": {
-    #             "md_symbol": "ETH-PERP",
-    #             "trade_symbol": "ETH-PERP"
-    #         },
-    #         "PERP-BTC-USD": {
-    #             "md_symbol": "BTC-PERP",
-    #             "trade_symbol": "BTC-PERP"
-    #         },
-    #     },
-    # }
-    # ,"FIXER": {
-    #     "aliases": [
-    #         "FIXER-MD"
-    #     ],
-    #     "instruments": {
-    #         "PAIR-EUR-USD": {
-    #             "md_symbol": "EUR-USD",
-    #             "trade_symbol": "EUR-USD",
-    #         },
-    #         "PAIR-USD-MXN": {
-    #             "md_symbol": "USD-MXN",
-    #             "trade_symbol": "USD-MXN",
-    #         },
-    #         "PAIR-USD-JPY": {
-    #             "md_symbol": "USD-JPY",
-    #             "trade_symbol": "USD-JPY",
-    #         },
-    #     }
-    # }
-    # #
-    # # ------------------------ G
-    # #
-    # , "GEMINI": {
-    #     "aliases": [
-    #         "GEMINI-MD", "GEMINI-SNDBX", "GEMINI-SNDBX-NOFIX"
-    #     ],
-    #     "instruments": {
-    #         "PERP-BTC-GUSD": {
-    #             "md_symbol": "BTCGUSDPERP",
-    #             "trade_symbol": "BTCGUSDPERP"
-    #             "specifics": {
-    #                 "quote_increment": 0.5,
-    #             }
-    #         },
-    #     }
-    # }
-    # #
-    # # ------------------------ I
-    # #
-    # , "ITBT": {
-    #     "aliases": [
-    #         "ITBT-MD",
-    #         "ITBT-BKTST"
-    #     ],
-    #     "instruments": {
-    #         "PAIR-BTC-USD": {
-    #             "md_symbol": "BTCUSD",
-    #             "trade_symbol": "BTCUSD"
-    #         },
-    #         "PAIR-ETH-USD": {
-    #             "md_symbol": "ETHUSD",
-    #             "trade_symbol": "ETHUSD"
-    #         },
-    #         "PAIR-MATIC-USD": {
-    #             "md_symbol": "MATICUSD",
-    #             "trade_symbol": "MATICUSD"
-    #         },
-    #         "PAIR-SOL-USD": {
-    #             "md_symbol": "SOLUSD",
-    #             "trade_symbol": "SOLUSD"
-    #         },
-    #         "PAIR-BCH-USD": {
-    #             "md_symbol": "BCHUSD",
-    #             "trade_symbol": "BCHUSD"
-    #         },
-    #         "PAIR-LTC-USD": {
-    #             "md_symbol": "LTCUSD",
-    #             "trade_symbol": "LTCUSD"
-    #         },
-    #         "PAIR-UNI-USD": {
-    #             "md_symbol": "UNIUSD",
-    #             "trade_symbol": "UNIUSD"
-    #         },
-    #         "PAIR-AAVE-USD": {
-    #             "md_symbol": "AAVEUSD",
-    #             "trade_symbol": "AAVEUSD"
-    #         },
-    #         "PAIR-LINK-USD": {
-    #             "md_symbol": "LINKUSD",
-    #             "trade_symbol": "LINKUSD"
-    #         },
-    #     }
-    # }
-    # #
-    # # ------------------------ S
-    # #
-    # , "SHIFT": {
-    #     "aliases": [
-    #         "SHIFT-MD"
-    #     ],
-    #     "instruments": {
-    #         "PAIR-EUR-USD": {
-    #             "md_symbol": "EUR/USD",
-    #             "trade_symbol": "EUR/USD",
-    #         },
-    #         "PAIR-EUR-GBP": {
-    #             "md_symbol": "EUR/GBP",
-    #             "trade_symbol": "EUR/GBP",
-    #         },
-    #         "PAIR-GBP-USD": {
-    #             "md_symbol": "GBP/USD",
-    #             "trade_symbol": "GBP/USD",
-    #         },
-    #         "PAIR-USD-MXN": {
-    #             "md_symbol": "USD/MXN",
-    #             "trade_symbol": "USD/MXN",
-    #         },
-    #         "PAIR-USD-JPY": {
-    #             "md_symbol": "USD/JPY",
-    #             "trade_symbol": "USD/JPY",
-    #         },
-    #     }
-    # }
-    # #
-    # # ------------------------ X
-    # #
-    # , "XRPDEX": {
-    #     "aliases": [
-    #         "XRPDEX-MD"
-    #     ],
-    #     "instruments": {
-    #         "PAIR-EUR-USD": {
-    #             "md_symbol": "EUR-USD",
-    #             "trade_symbol": "EUR-USD",
-    #             "specifics": {
-    #                 "base_issuer": "rhub8VRN55s94qWKDv6jmDy1pUykJzF3wq",
-    #                 "quote_issuer": "rhub8VRN55s94qWKDv6jmDy1pUykJzF3wq"
-    #             }
-    #         },
-    #         "PAIR-XRP-EUR": {
-    #             "md_symbol": "XRP-EUR",
-    #             "trade_symbol": "XRP-EUR",
-    #             "specifics": {
-    #                 "quote_issuer": "rhub8VRN55s94qWKDv6jmDy1pUykJzF3wq",
-    #             }
-    #         },
-    #             "PAIR-XRP-USD": {
-    #             "md_symbol": "XRP-USD",
-    #             "trade_symbol": "XRP-USD",
-    #             "specifics": {
-    #                 "quote_issuer": "rhub8VRN55s94qWKDv6jmDy1pUykJzF3wq",
-    #             }
-    #         }
-    #     }
-    # }
+    }
+    , "KRAKEN": {
+        "instruments": {
+            # --- PAIRs
+            "PAIR-BTC-USD": {
+                "md_symbol": "BTC/USD"
+                , "trade_symbol": "BTC/USD"
+                , "quantity_precision": "0.00001"
+            }
+        }
+    }    , "OKX": {
+        "instruments": {
+            # --- PAIRs
+            "PAIR-BTC-USDT": {
+                "md_symbol": "BTC-USDT"
+                , "trade_symbol": "BTC-USDT"
+                , "quantity_precision": "0.00001"
+            }
+        }
+    }
 }
 
 
diff --git a/data/refdata/exchanges.cfg b/data/refdata/exchanges.cfg
index 40b5fcf..56689ed 100644
--- a/data/refdata/exchanges.cfg
+++ b/data/refdata/exchanges.cfg
@@ -318,6 +318,7 @@
     }
     # ---------------------------- G
     , "GEMINI": {
+        # https://docs.gemini.com/rest-api
         "exchange_id": "GEMINI"
         , "name": "Gemini"
         , "type": "SPOT"
@@ -331,8 +332,70 @@
 
             , "ws_url": ["WSS"  , "wss://api.gemini.com/v2/marketdata"]
         }
-    }
 
+        # , "REST": {
+        #     "open_orders_url": ["POST",  "https://api.gemini.com/v1/orders"]
+        #     , "order_status_url": ["POST",  "https://api.gemini.com/v1/order/status"]
+        #     , "cancel_all_url": ["POST",  "https://api.gemini.com/v1/order/cancel/all"]
+        #     , "balances_url": ["POST",  "https://api.gemini.com/v1/balances"]
+        #     , "positions_url": ["POST",  "https://api.gemini.com/v1/positions"]
+        #     , "trades_url": ["POST",  "https://api.gemini.com/v1/mytrades"]
+        #     , "symbol_url": ["GET", "https://api.gemini.com/v1/symbols/details"]
+        #     , "margin_url": ["POST", "https://api.gemini.com/v1/margin"]
+        # }
+    }
+    , "GEMINI-SNDBX": {
+        # https://docs.gemini.com/rest-api
+        "exchange_id": "GEMINI"
+        , "name": "Gemini"
+        , "type": "SPOT"
+
+        , "module"              : "cvttpy.oms.exchange"
+        , "connector_class"     : "MdOnlyExchangeConnector"
+
+        , "mktdata" : {
+            "class": "cvttpy.exchanges.gemini.mkt_data.GeminiMdFeed"
+            , "reconnect_secs": 1
+
+            , "ws_url": ["WSS"  , "wss://api.sandbox.gemini.com/v2/marketdata"]
+        }
+        , "order_entry": {
+            "REST": {
+                "order_status_url": ["POST",  "https://api.sandbox.gemini.com/v1/order/status"]
+                , "cancel_all_url": ["POST",  "https://api.sandbox.gemini.com/v1/order/cancel/all"]
+            }
+
+
+        }
+        , "accounting": {
+            "class": "cvttpy.exchanges.gemini.account.GeminiExchAccounting"
+            , "REST": {
+                "open_orders_url": ["POST",  "https://api.sandbox.gemini.com/v1/orders"]
+                , "order_status_url": ["POST",  "https://api.sandbox.gemini.com/v1/order/status"]
+                , "balances_url": ["POST",  "https://api.sandbox.gemini.com/v1/balances"]
+                , "positions_url": ["POST",  "https://api.sandbox.gemini.com/v1/positions"]
+                , "trades_url": ["POST",  "https://api.sandbox.gemini.com/v1/mytrades"]
+                , "symbol_url": ["GET", "https://api.sandbox.gemini.com/v1/symbols/details"]
+                , "margin_url": ["POST", "https://api.sandbox.gemini.com/v1/margin"]
+            }
+        }
+    }
+    # ---------------------------- K
+    , "KRAKEN": {
+        "exchange_id":          "KRAKEN"
+        , "name":               "KRAKEN"
+        , "type":               "SPOT"
+
+        , "mktdata" : {
+            "class":           "cvttpy.exchanges.kraken.mkt_data.KrakenMdFeed"
+            , "max_connections": 10
+            , "reconnect_secs": 2.0
+
+
+            , "ws_url": ["WSS", "wss://ws.kraken.com/v2"]
+            , "REST": {}
+        }
+    }
     # ---------------------------- M
     , "MD_PORTAL_ALPACA_02": {
         "exchange_id":          "MD_PORTAL"
@@ -367,5 +430,21 @@
             , "channel_prefix": "MD_COINBS_01"
         }
     }
+    # ---------------------------- O
+    , "OKX": {
+        "exchange_id":          "OKX"
+        , "name":               "OKX"
+        , "type":               "SPOT"
+
+        , "mktdata" : {
+            "class":           "cvttpy.exchanges.okx.mkt_data.OkxMultiWsFeed"
+            , "max_connections": 10
+            , "reconnect_secs": 2.0
+
+
+            , "ws_url": ["WSS", "wss://ws.okx.com:8443/ws/v5/public"]
+            , "REST": {}
+        }
+    }
 }