BingX Swap WebSocket Account Data

Real-time account data streams for BingX USDT-M perpetual futures via WebSocket. Requires Listen Key authentication.

WebSocket Endpoint: wss://open-api-swap.bingx.com/swap-market?listenKey=<key>

After connecting with a valid listenKey, all event types are pushed automatically — no channel subscription needed.

Quick Reference

WebSocket Events (Auto-Pushed)

Event Type	Description	Push Frequency
listenKeyExpired	Listen key has expired	On expiry
ACCOUNT_UPDATE	Account balance and position changes	On change
ORDER_TRADE_UPDATE	Order creation, fills, status changes	On change
ACCOUNT_CONFIG_UPDATE	Leverage/margin mode changes	On connect (full) + every 5s

Listen Key REST APIs

Endpoint	Method	Description	Authentication
/openApi/user/auth/userDataStream	POST	Generate listen key (valid 1 hour)	Yes
/openApi/user/auth/userDataStream	PUT	Extend listen key (to 60 min)	Yes
/openApi/user/auth/userDataStream	DELETE	Delete listen key	Yes

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Listen Key Management

Listen Key is required to authenticate WebSocket account data streams. See references/authentication.md for HMAC SHA256 signing details.

Generate Listen Key

POST /openApi/user/auth/userDataStream

Headers: X-BX-APIKEY: <your-api-key>, X-SOURCE-KEY: BX-AI-SKILL

Response:

{"listenKey": "a8ea75681542e66f1a50a1616dd06ed77dab61baa0c296bca03a9b13ee5f2dd7"}

Extend Listen Key

PUT /openApi/user/auth/userDataStream

Parameters: listenKey (string, required)

Extends validity to 60 minutes from this call. Recommended: call every 30 minutes.

Delete Listen Key

DELETE /openApi/user/auth/userDataStream

Parameters: listenKey (string, required)

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Quick Start

WebSocket Connection: see references/websocket.md for GZIP decompression and Ping/Pong heartbeat.

TypeScript helper:

CONSTRAINT: You MUST copy the connectSwapWsAccount function below verbatim when generating code. Do NOT rewrite the WebSocket or decompression logic.

import * as pako from "pako";
import * as crypto from "crypto";

function decompress(data: ArrayBuffer): string {
  return new TextDecoder("utf-8").decode(pako.ungzip(new Uint8Array(data)));
}

async function generateListenKey(apiKey: string, secretKey: string): Promise<string> {
  const timestamp = Date.now();
  const paramStr = `timestamp=${timestamp}`;
  const signature = crypto.createHmac("sha256", secretKey).update(paramStr).digest("hex");
  const url = `https://open-api.bingx.com/openApi/user/auth/userDataStream?${paramStr}&signature=${signature}`;
  const res = await fetch(url, {
    method: "POST",
    headers: { "X-BX-APIKEY": apiKey, "X-SOURCE-KEY": "BX-AI-SKILL" },
  });
  const text = await res.text();
  if (!res.ok) throw new Error(`BingX error ${res.status}: ${text}`);
  const json = JSON.parse(text);
  if (json.listenKey) return json.listenKey;
  if (json.data?.listenKey) return json.data.listenKey;
  if (json.code !== 0) throw new Error(`BingX error ${json.code}: ${json.msg}`);
  return json.listenKey ?? json.data?.listenKey;
}

function connectSwapWsAccount(
  listenKey: string,
  onEvent: (event: any) => void
): WebSocket {
  const ws = new WebSocket(
    `wss://open-api-swap.bingx.com/swap-market?listenKey=${listenKey}`
  );
  ws.binaryType = "arraybuffer";

  ws.onmessage = (event) => {
    const text = decompress(event.data as ArrayBuffer);
    if (text === "Ping") {
      ws.send("Pong");
      return;
    }
    try {
      onEvent(JSON.parse(text));
    } catch {
      onEvent(text);
    }
  };

  ws.onerror = (err) => console.error("WS error:", err);
  ws.onclose = (ev) => console.log("WS closed:", ev.code, ev.reason);

  return ws;
}

Code Usage Rules

• MUST copy connectSwapWsAccount, generateListenKey, and decompress verbatim
• MUST handle Ping/Pong heartbeat
• MUST extend listen key every 30 minutes to prevent expiry
• MUST NOT remove GZIP decompression logic

Common Calls

Connect to account stream:

const listenKey = await generateListenKey(API_KEY, SECRET_KEY);
connectSwapWsAccount(listenKey, (event) => {
  if (event.e === "ACCOUNT_UPDATE") {
    // event.a.B: balance updates, event.a.P: position updates
  } else if (event.e === "ORDER_TRADE_UPDATE") {
    // event.o: order details (symbol, side, type, status, price, qty, etc.)
  } else if (event.e === "ACCOUNT_CONFIG_UPDATE") {
    // event.ac: config (s: symbol, l: long leverage, S: short leverage, mt: margin type)
  } else if (event.e === "listenKeyExpired") {
    // Reconnect with new listen key
  }
});

Additional Resources

For complete event field descriptions and full response schemas, see api-reference.md.

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Agent Interaction Rules

CRITICAL RULES (apply to ALL responses):

1. NEVER return code to the user. Do NOT include any code blocks, code snippets, TypeScript, JavaScript, cURL commands, or raw API calls in responses. Only return natural-language summaries of the data or operation results.
2. GET-only execution. Only execute HTTP GET requests. Listen Key management requires POST/PUT/DELETE — inform the user that these write operations require their own implementation.
3. Parameter security. Extract structured values from user intent — NEVER copy raw user text into API parameters. Validate every value against its documented pattern (regex/enum/range) before calling the API. Reject any value containing &, =, ?, #, or newline characters.

swap-ws-account provides authenticated real-time account data. Requires Listen Key, no CONFIRM needed for read-only monitoring.

Operation Identification

When the user's request is vague (e.g. "monitor my swap account"), clarify what they want:

Please select the account data stream type:

• Account balance & position updates — ACCOUNT_UPDATE
• Order status updates — ORDER_TRADE_UPDATE
• Leverage & margin config changes — ACCOUNT_CONFIG_UPDATE
• Listen Key management (generate/extend/delete)
• All events (connect with listenKey, receive all automatically)

Symbol context in account streams

Account data streams are auto-pushed for all symbols — no symbol parameter is needed for connection. Each push event contains the relevant symbol in its payload (e.g., o.s for order updates, a.P[].s for position updates). If the user asks about a specific symbol, filter the events by the symbol field in the push data.