Exchange Information

Description

Get current system rules and trading restrictions.

ZTDX-specific filter set

Each symbols[*].filters array contains exactly four filter types (always present, in this order):

1. PRICE_FILTER — tickSize is authoritative; minPrice equals tickSize. maxPrice is a sentinel large value (1000000000); the actual cap is enforced server-side via max_order_size_usd.
2. LOT_SIZE — minQty and stepSize are authoritative and equal to the symbol's lot size. maxQty is the same sentinel as above.
3. MARKET_LOT_SIZE — Same values as LOT_SIZE. (Binance distinguishes the two; ZTDX does not — kept in the response for SDK compatibility.)
4. MIN_NOTIONAL — notional is the symbol's min_order_size_usd (default 10 USD, queryable per-symbol). The same value is also returned in the list endpoint /api/v1/markets[*].min_order_size_usd.

Filter types MAX_NUM_ORDERS, PERCENT_PRICE, and MAX_NUM_ALGO_ORDERS are not populated. Per-account / per-symbol order count caps are enforced server-side at admission rather than via filters.

The MIN_NOTIONAL check is bypassed for reduceOnly=true orders so that a position bled below 10 USD (e.g. by funding fees) can still be closed. See new-order.

HTTP Request

GET /fapi/v1/exchangeInfo

Request Parameters

NONE

Response Example

{
 	"rateLimits": [ // API access rate limits
 		{
 			"interval": "MINUTE", // Calculated per minute
   			"intervalNum": 1, // Calculated per 1 minute
   			"limit": 2400, // Upper limit
   			"rateLimitType": "REQUEST_WEIGHT" // Calculated by request weight
   		},
  		{
  			"interval": "MINUTE",
   			"intervalNum": 1,
   			"limit": 1200,
   			"rateLimitType": "ORDERS" // Calculated by order count
   		}
   	],
 	"serverTime": 1565613908500, // Please ignore. To get the current system time, use "GET /fapi/v1/time"
 	"assets": [ // Asset information: a single entry for the collateral asset
 		{
 			"asset": "USDT",
   			"marginAvailable": true, // Always true
   			"autoAssetExchange": "0" // Always "0" (string); auto-exchange is not supported
   		}
   	],
 	"symbols": [ // Trading pair information
 		{
 			"symbol": "BLZUSDT",  // Trading pair
 			"pair": "BLZUSDT",  // Underlying trading pair
 			"contractType": "PERPETUAL",	// Contract type
 			"deliveryDate": 4133404800000,  // Delivery date
 			"onboardDate": 1598252400000,	  // Listing date
 			"status": "TRADING",  // Trading pair status
 			"baseAsset": "BLZ",  // Base asset
 			"quoteAsset": "USDT", // Quote asset
 			"marginAsset": "USDT", // Margin asset
 			"pricePrecision": 5,  // Price decimal precision (system precision only, note the distinction from tickSize)
 			"quantityPrecision": 0,  // Quantity decimal precision (system precision only, note the distinction from stepSize)
 			"baseAssetPrecision": 8,  // Base asset precision
 			"quotePrecision": 8,  // Quote asset precision
 			"underlyingType": "COIN",
 			"settlePlan": 0,
 			"triggerProtect": "0.15", // Derived from the symbol's maintenance margin rate
 			"filters": [
 				{
 					"filterType": "PRICE_FILTER", // Price filter
     				"maxPrice": "1000000000", // Sentinel large value (see note above)
     				"minPrice": "0.0001", // Minimum price (equals tickSize)
     				"tickSize": "0.0001" // Minimum price increment
     			},
    			{
    				"filterType": "LOT_SIZE", // Quantity filter
     				"maxQty": "1000000000", // Sentinel large value (see note above)
     				"minQty": "1", // Minimum quantity
     				"stepSize": "1" // Minimum quantity increment
     			},
    			{
    				"filterType": "MARKET_LOT_SIZE", // Market order quantity filter (same values as LOT_SIZE)
     				"maxQty": "1000000000", // Sentinel large value (see note above)
     				"minQty": "1", // Minimum quantity
     				"stepSize": "1" // Allowed step size
     			},
  				{
  					"filterType": "MIN_NOTIONAL",  // Minimum notional value
  					"notional": "10"
  				}
   			],
 			"orderTypes": [ // Order types
   				"LIMIT",  // Limit order
   				"MARKET",  // Market order
   				"STOP", // Stop order
   				"STOP_MARKET", // Stop market order
   				"TAKE_PROFIT", // Take profit order
   				"TAKE_PROFIT_MARKET" // Take profit market order
   			],
   			"timeInForce": [ // Time in force
   				"GTC", // Good till cancelled
   				"IOC", // Immediate or cancel
   				"FOK", // Fill or kill
   				"GTX" // Good till crossing (post only)
 			]
 		}
   	],
	"timezone": "UTC" // Server timezone
}

Code Examples

cURL

curl -s "https://api.prex.world/fapi/v1/exchangeInfo"

Python

import requests

base_url = "https://api.prex.world"
response = requests.get(f"{base_url}/fapi/v1/exchangeInfo")
data = response.json()
print(f"Timezone: {data['timezone']}")
print(f"Symbols count: {len(data['symbols'])}")
for s in data['symbols'][:3]:
    print(f"  {s['symbol']} - {s['contractType']} - {s['status']}")