User Data Streams for Binance Spot TESTNET

Last Updated: 2024-11-27

General WSS information

• The base API endpoint is: https://testnet.binance.vision/
• A User Data Stream listenKey is valid for 60 minutes after creation.
• Doing a PUT on an active listenKey will extend its validity for 60 minutes.
• Doing a DELETE on an active listenKey will close the stream and invalidate the listenKey.
• Doing a POST on an account with an active listenKey will return the currently active listenKey and extend its validity for 60 minutes.
• The base websocket endpoint is: wss://stream.testnet.binance.vision:9443
• User Data Streams are accessed at /ws/<listenKey> or /stream?streams=<listenKey>
• A single connection to stream.binance.com is only valid for 24 hours; expect to be disconnected at the 24 hour mark.
• All time and timestamp related fields in the JSON responses are milliseconds by default. To receive the information in microseconds, please add the parameter timeUnit=MICROSECOND or timeUnit=microsecond in the URL.
  • For example /ws/<listenKey>&timeUnit=MICROSECOND

API Endpoints

Create a listenKey (USER_STREAM)

POST /api/v3/userDataStream

Start a new user data stream. The stream will close after 60 minutes unless a keepalive is sent. If the account has an active listenKey, that listenKey will be returned and its validity will be extended for 60 minutes.

Weight: 1

Parameters: NONE

Response:

{
  "listenKey": "pqia91ma19a5s61cv6a81va65sdf19v8a65a1a5s61cv6a81va65sdf19v8a65a1"
}

Ping/Keep-alive a listenKey (USER_STREAM)

PUT /api/v3/userDataStream

Keepalive a user data stream to prevent a time out. User data streams will close after 60 minutes. It's recommended to send a ping about every 30 minutes.

Weight: 1

Parameters:

Name	Type	Mandatory	Description
listenKey	STRING	YES

Response:

{}

Close a listenKey (USER_STREAM)

DELETE /api/v3/userDataStream

Close out a user data stream.

Weight: 1

Parameters:

Name	Type	Mandatory	Description
listenKey	STRING	YES

Response:

{}

Web Socket Payloads

Account Update

outboundAccountPosition is sent any time an account balance has changed and contains the assets that were possibly changed by the event that generated the balance change.

{
  "e": "outboundAccountPosition", // Event type
  "E": 1564034571105,             // Event Time
  "u": 1564034571073,             // Time of last account update
  "B": [                          // Balances Array
    {
      "a": "ETH",                 // Asset
      "f": "10000.000000",        // Free
      "l": "0.000000"             // Locked
    }
  ]
}

Balance Update

Balance Update occurs during the following:

• Deposits or withdrawals from the account
• Transfer of funds between accounts (e.g. Spot to Margin)

Payload

{
  "e": "balanceUpdate",         // Event Type
  "E": 1573200697110,           // Event Time
  "a": "BTC",                   // Asset
  "d": "100.00000000",          // Balance Delta
  "T": 1573200697068            // Clear Time
}

Order Update

Orders are updated with the executionReport event.

Payload:

{
  "e": "executionReport",        // Event type
  "E": 1499405658658,            // Event time
  "s": "ETHBTC",                 // Symbol
  "c": "mUvoqJxFIILMdfAW5iGSOW", // Client order ID
  "S": "BUY",                    // Side
  "o": "LIMIT",                  // Order type
  "f": "GTC",                    // Time in force
  "q": "1.00000000",             // Order quantity
  "p": "0.10264410",             // Order price
  "P": "0.00000000",             // Stop price
  "F": "0.00000000",             // Iceberg quantity
  "g": -1,                       // OrderListId
  "C": "",                       // Original client order ID; This is the ID of the order being canceled
  "x": "NEW",                    // Current execution type
  "X": "NEW",                    // Current order status
  "r": "NONE",                   // Order reject reason; will be an error code.
  "i": 4293153,                  // Order ID
  "l": "0.00000000",             // Last executed quantity
  "z": "0.00000000",             // Cumulative filled quantity
  "L": "0.00000000",             // Last executed price
  "n": "0",                      // Commission amount
  "N": null,                     // Commission asset
  "T": 1499405658657,            // Transaction time
  "t": -1,                       // Trade ID
  "v": 3,                        // Prevented Match Id; This is only visible if the order expired due to STP
  "I": 8641984,                  // Ignore
  "w": true,                     // Is the order on the book?
  "m": false,                    // Is this trade the maker side?
  "M": false,                    // Ignore
  "O": 1499405658657,            // Order creation time
  "Z": "0.00000000",             // Cumulative quote asset transacted quantity
  "Y": "0.00000000",             // Last quote asset transacted quantity (i.e. lastPrice * lastQty)
  "Q": "0.00000000",             // Quote Order Quantity
  "W": 1499405658657,            // Working Time; This is only visible if the order has been placed on the book.
  "V": "NONE"                    // SelfTradePreventionMode
}

Note: Average price can be found by doing Z divided by z.

Conditional Fields in Execution Report

These are fields that appear in the payload only if certain conditions are met.

For additional information on these parameters, please refer to the Spot Glossary.

Field	Name	Description	Examples
d	Trailing Delta	Appears only for trailing stop orders.	"d": 4
D	Trailing Time		"D": 1668680518494
j	Strategy Id	Appears only if the strategyId parameter was provided upon order placement.	"j": 1
J	Strategy Type	Appears only if the strategyType parameter was provided upon order placement.	"J": 1000000
v	Prevented Match Id	Appears only for orders that expired due to STP.	"v": 3
A	Prevented Quantity		"A":"3.000000"
B	Last Prevented Quantity		"B":"3.000000"
u	Trade Group Id		"u":1
U	Counter Order Id		"U":37
Cs	Counter Symbol		"Cs": "BTCUSDT"
pl	Prevented Execution Quantity		"pl":"2.123456"
pL	Prevented Execution Price		"pL":"0.10000001"
pY	Prevented Execution Quote Qty		"pY":"0.21234562"
W	Working Time	Appears when the order is working on the book	"W": 1668683798379
b	Match Type	Appears for orders that have allocations	"b":"ONE_PARTY_TRADE_REPORT"
a	Allocation ID		"a":1234
k	Working Floor	Appears for orders that potentially have allocations	"k":"SOR"
uS	UsedSor	Appears for orders that used SOR	"uS":true

If the order is an order list, an event named ListStatus will be sent in addition to the executionReport event.

Payload

{
  "e": "listStatus",                // Event Type
  "E": 1564035303637,               // Event Time
  "s": "ETHBTC",                    // Symbol
  "g": 2,                           // OrderListId
  "c": "OCO",                       // Contingency Type
  "l": "EXEC_STARTED",              // List Status Type
  "L": "EXECUTING",                 // List Order Status
  "r": "NONE",                      // List Reject Reason
  "C": "F4QN4G8DlFATFlIUQ0cjdD",    // List Client Order ID
  "T": 1564035303625,               // Transaction Time
  "O": [                            // An array of objects
    {
      "s": "ETHBTC",                // Symbol
      "i": 17,                      // OrderId
      "c": "AJYsMjErWJesZvqlJCTUgL" // ClientOrderId
    },
    {
      "s": "ETHBTC",
      "i": 18,
      "c": "bfYPSQdLoqAJeNrOr9adzq"
    }
  ]
}

Execution types

• NEW - The order has been accepted into the engine.
• CANCELED - The order has been canceled by the user.
• REPLACED (currently unused)
• REJECTED - The order has been rejected and was not processed. (e.g. Cancel Replace orders where the new order placement was rejected even if the cancel request succeeded.)
• TRADE - Part of the order or all of the order's quantity has filled.
• EXPIRED - The order was canceled according to the order type's rules (e.g. LIMIT FOK orders with no fill, LIMIT IOC or MARKET orders that partially fill) or by the exchange, (e.g. orders canceled during liquidation, orders canceled during maintenance).
• TRADE_PREVENTION - The order has expired due to STP.

Check the Rest API Documentation for more relevant enum definitions.

Listen Key Expired

This event is sent when the listen key expires.

No more events will be sent after this until a new listenKey is created.

This event will not be pushed when the stream is closed normally.

Payload:

{
  "e": "listenKeyExpired",  // Event type
  "E": "1699596037418",     // Event time
  "listenKey": "OfYGbUzi3PraNagEkdKuFwUHn48brFsItTdsuiIXrucEvD0rhRXZ7I6URWfE8YE8" 
}

Event Stream Terminated

This event appears only for WebSocket API.

eventStreamTerminated is sent when the User Data Stream is stopped. For example, after you send a userDataStream.stop request, or a session.logout request.

Payload:

{
  "event": {
    "e": "eventStreamTerminated", // Event Type
    "E": 1728973001334            // Event Time
  }
}

External Lock Update

externalLockUpdate is sent when part of your spot wallet balance is locked/unlocked by an external system, for example when used as margin collateral.

Payload:

{
  "e": "externalLockUpdate",  // Event Type
  "E": 1581557507324,         // Event Time
  "a": "NEO",                 // Asset
  "d": "10.00000000",         // Delta
  "T": 1581557507268          // Transaction Time
}```