DEx Open API

---

Preparations

1. Register an account by email on https://dex.top
2. Bind the trader address on the account page.
3. Deposit eth or tokens on the balance page.
4. You can use https://testnet271828.dex.top for test which base on Kovan testnet, You can go to Gitter ask for test tokens
5. APIs rate limit is 100/sec per ip or account

Trade APIs

Note

API rate limit per IP address is 100/second, and per user is 600/minute.

PlaceOrder

Place a new order.

Request POST /v1/placeorder

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• Params

  • traderAddr Trader address
  • pairId Id of the trading token pair
  • amount Amount of token to buy or sell
  • price Order price
  • action "Buy" or "Sell"
  • nonce Order nonce. Recommended value is the current timestamp in millisecond
  • expireTimeSec Order expire time (timestamp in second)
  • sig Signature of signing the order with the private key of the trader address, see API Introduction for details.

Sample Request

{
  "amount": "66.51501244",
  "price": "0.00150342",
  "action": "Buy",
  "nonce": 1522290645732,
  "expireTimeSec": 1522377045,
  "sig": "0x3d42c49bebfc912d5b6698556db273e9e38b72928b052eccd967a4bb4d31cb007b363a1a30d45ee5055b64a8a7d8bac7fc1d4d2f3009d910b856467699a58b4f00",
  "pairId": "ETH_ADX"
}

Sample Response

{
  "order": {
    "orderId": "10000004",
    "pairId": "ETH_ADX",
    "action": "Buy",
    "price": "0.01000000",
    "amountTotal": "10.00000000",
    "amountFilled": "0.00000000",
    "filledAveragePrice": "0.00000000",
    "status": "Unfilled", // "Filled" or "Unfilled" or "PartiallyFilled" or "Cancelled" or "Expired"
    "createTimeMs": "1522554774421",
    "updateTimeMs": "1522554774421",
    "expireTimeSec": "1522641169",
    "nonce": "1522554769144"
  }
}

Note

• Full data samples of order signing, including the used private keys, can be found at here.

• Signing Scheme 1 (Friendly to API usage)

  The bytes to be hashed (using keccak256) for signing are the concatenation of the following (uints are in big-endian order):

  1. Prefix "\x19Ethereum Signed Message:\n70".

  2. String "DEx2 Order: " (Note the trailing whitespace)

  3. The market address.

     This is for replay attack protection when we deploy a new market.

  4. nonce(64)

  5. expireTimeSec(64) amountE8(64) priceE8(64) 0x00(8) action(8) pairId(32)

CancelOrder

Cancel an existing order.

Request POST /v1/cancelorder

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• params

  • traderAddr Trader address
  • orderId The order id you want to cancel
  • pairId The id of the trading token pair
  • nonce Order nonce. The recommended value is the current timestamp in millisecond.

Sample Request

{
  "orderId":"10000004",
  "pairId":"ETH_ADX",
  "nonce":1522554949196,  // nonce use timestamp in millisecond
}

Sample response

{}

CancelAllOrders

Cancel all existing orders using given parameters.

Request POST /v1/cancelallorders

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• params

  • traderAddr Trader address
  • pairId The id of the trading token pair
  • nonce Order nonce. The recommended value is the current timestamp in millisecond.

Sample Request

{
  "pairId":"ETH_ADX",
  "nonce":1522554949196,  // nonce use timestamp in millisecond
}

Sample response

{
    cancelledOrderIds: [1000373, 1000374] // ids of all cancelled orders
}

Withdraw

Withdraw a token with the specified amount.

Request POST /v1/withdraw

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• required params

  • tokenId: Withdraw token id
  • amount: Withdraw Amount

Sample Request

{
  "tokenId":"ETH",
  "amount":"0.1",
}

Sample response

{}

TradeInfo Public APIs

GetMarketInfo

Get relevant market information such as market contract address and token codes for signature.

Request GET /v1/market

Sample Request

http://dex.top/v1/market

Sample Response

{
  "marketAddr": "0x91952Ce7d434E84E8932AAB0F8A3f2E6A72F89a1", // Market Address for signature and deposit
  "label": "NoneLabel",
  "config": {
    "makerFeeRateE4": "0",
    "takerFeeRateE4": "0",
    "withdrawFeeRateE4": "0",
    "cashTokens": [
      {
        "tokenId": "ETH",
        "tokenCode": 0,  // Cash Token Code for signature
        "tokenAddr": "",
        "scaleFactor": "1000000000000000000"
      }
    ],
    "stockTokens": [
      {
        "tokenId": "BTM",
        "tokenCode": 300, // Stock Token Code for signature
        "tokenAddr": "0x45ddA1360019D2D26Bfa482A629a03f31A3a1A37",
        "scaleFactor": "1000"
      },
      {
        "tokenId": "OMG",
        "tokenCode": 400,
        "tokenAddr": "0x693f7fD5A8153A56bEc70189a1ae1943E07Be495",
        "scaleFactor": "1000"
      }
    ]
  },
  "networkName": ""
}

GetPairsByCash

Get the real-time trading information of all available trading pairs of the specified cash token (e.g. "ETH").

Request GET /v1/pairlist/:cashTokenId

• cashTokenId The basic cash token like ETH

Sample Request

http://dex.top/v1/pairlist/ETH

Sample Response

{
  "pairs":[
    {
      "pairId": "ETH_ADX", // request trade pair's Id
      "timeMs": "1517975573850", // response timestamp
      "lastPrice": "5.095449", // price of timeMs
      "volume24": "414.056370", // total volume of this pair in 24 hours
      "amount24": "2340.81387265", // total token amount in 24 hours
      "change24": "4.421090", // price change of this pair in 24 hours
      "changePercent24": "", // price change rate of this pair in 24 hours
      "high24": "9.612255", // highest price of this pair in last 24 hours
      "low24": "3.170465" // lowest price of this pair in 24 hours
    }
  ],
}

GetPairInfo

Get the real-time information of a trading pair.

Request GET /v1/pairinfo/:pairId

• pairId Order trade pair

Sample Request

http://dex.top/v1/pairinfo/ETH_ADX

Sample Response

{
  "pairInfo": {
    "pairId": "ETH_ADX",
    "timeMs": "1517974573647",
    "lastPrice": "5.813280",
    "volume24": "402.666631",
    "amount24": "2340.81387265",
    "change24": "4.497973",
    "changePercent24": "",
    "high24": "7.978321",
    "low24": "3.491216"
  }
}

GetTradeHistory

Get recent trades by pairId sort by trade time.

Request GET /v1/tradehistory/:pairId/:size

• pairId The id of the trading token pair.
• size The number of levels of history to get.

Sample Request

http://dex.top/v1/tradehistory/ETH_ADX/3

Sample Response

{
  "records": [
    {
      "pairId": "ETH_ADX",
      "timeMs": "1522208665707", // The timestamp in millisecond of this trade.
      "action": "Buy",
      "price": "0.00010000",
      "amount": "934.00000000"
    },
    {
      "pairId": "ETH_ADX",
      "timeMs": "1522208545271",
      "action": "Buy",
      "price": "0.00010000",
      "amount": "66.00000000"
    },
    {
      "pairId": "ETH_ADX",
      "timeMs": "1522208486796",
      "action": "Buy",
      "price": "0.00010000",
      "amount": "1000.00000000"
    }
  ]
}

GetPairDepth

Get the depth data of a trading pair.

Request GET /v1/depth/:pairId/:size

• pairId The id of the trading token pair.
• size The number of levels of depth to get.

Sample Request

http://dex.top/v1/depth/ETH_ADX/5

Sample Response:

{
  "depth": {
    "pairId": "ETH_ADX",
    "timeMs": "1513244690782", // The timestamp in millisecond of this depth data.
    // `asks` are ascending by price.
    "asks": [
      {
        "price": "0.00157384",
        "amount": "66.00000000"
      },
      {
        "price": "0.00159438",
        "amount": "80.00000000"
      },
      {
        "price": "0.00163499",
        "amount": "100.00000000"
      },
      {
        "price": "0.00168030",
        "amount": "666.00000000"
      },
      {
        "price": "0.00175212",
        "amount": "800.00000000"
      }
    ],
    // `bids` are descending by price.
    "bids": [
      {
        "price": "0.00155000",
        "amount": "665.00000000"
      },
      {
        "price": "0.00151903",
        "amount": "66.00000000"
      },
      {
        "price": "0.00150021",
        "amount": "1000.00000000"
      },
      {
        "price": "0.00144436",
        "amount": "78.00000000"
      },
        "price": "0.00140912",
        "amount": "753.35833123"
      }
    ]
  }
}

TradeInfo User APIs

GetActiveOrders

Get unfilled or partially filled orders that have not been cancelled or expired of a trader.

Request GET /v1/activeorders/:addr/:pairId/:size/:page

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• params

  • pairId The id of the trading token pair.
  • size The number of each page of user active orders to get.
  • page The pages number to get
  • addr Trader eth address

Sample Request

http://dex.top/v1/activeorders/0x6a83D834951F29924559B8146D11a70EaB8E328b/ETH_ADX/100/1

Sample response

{
  "orders": [
    {
      "orderId": "10126257",
      "pairId": "ETH_ADX",
      "action": "Buy",
      "price": "0.00010000",
      "amountTotal": "500.00000000",
      "amountFilled": "0.00000000",
      "filledAveragePrice": "0.00000000",
      "status": "Unfilled", // "Filled" or "Unfilled" or "PartiallyFilled" or "Cancelled" or "Expired"
      "createTimeMs": "1528790525164",
      "updateTimeMs": "1528790525164",
      "expireTimeSec": "1529395319",
      "nonce": "1528790519061"
    }
  ],
  "page": 1,
  "total": 1
}

GetPastOrders

Get past orders on current wallet address.

Request GET /v1/pastorders/:addr/:pairId/:size/:page?from_time_sec=&to_time_sec=

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• params

  • pairId The id of the trading token pair.
  • size The number of each page of user past orders to get.
  • page The pages number to get
  • addr Trader eth address

• optional params

  • from_time_sec Timestamp in sec to get past orders from INCLUSIVE
  • to_time_sec Timestamp in sec to get past orders until INCLUSIVE

Sample Request

http://dex.top/v1/pastorders/0x6a83D834951F29924559B8146D11a70EaB8E328b/ETH_ADX/100/1?from_time_sec=1498793709&to_time_sec=1498794709

Sample response

{
  "orders": [
    {
      "orderId": "10000470",
      "pairId": "ETH_ADX",
      "action": "Buy",
      "price": "0.00004100",
      "amountTotal": "1500.00000000",
      "amountFilled": "1500.00000000",
      "filledAveragePrice": "0.00003924",
      "status": "Filled",
      "createTimeMs": "1528112182218",
      "updateTimeMs": "1528112182218",
      "expireTimeSec": "1528716977",
      "nonce": "1528112177402"
    }
  ],
  "page": 1,
  "total": 1
}

GetOrderById

Get the details of an order by order id.

Request GET /v1/orderbyid/:traderAddr/:orderId

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• params

  • traderAddr Trader eth address
  • orderId The id of the order.

Sample Request

http://dex.top/v1/orderbyid/0x6a83D834951F29924559B8146D11a70EaB8E328b/10000005

Sample response

{
  "order": {
    "orderId": "10000005",
    "pairId": "ETH_ADX",
    "action": "Sell",
    "price": "0.00165000",
    "amountTotal": "200.00000000",
    "amountFilled": "200.00000000",
    "filledAveragePrice": "0.00165000",
    "status": "Filled",
    "createTimeMs": "1524809137398",
    "updateTimeMs": "1524809653759",
    "expireTimeSec": "1525413935",
    "nonce": "1524809135488"
  }
}

GetKlineHistory

Request GET /v1/kline/history?symbol={pairID}&resolution={resolution}&from={startTimeStamp}&to={endTimeStamp}

• params
  • pairId The id of the trading token pair.
  • resolution duration for each bar, only support 5, 15, 30, 60, D, W.
  • startTimeStamp the start time of history data.
  • endTimeStamp the end time of history data.

Sample Request

http://dex.top/v1/kline/history?symbol=ETH_YEE&resolution=60&from=1527807437&to=1527843437

Sample response

{
    s: "ok",
    errmsg: "",
    // Timestamp
    t: [
        "1527825600",
        "1527829200",
        "1527832800",
        "1527836400",
        "1527840000"
    ],
    // Close
    c: [
        0.00004501,
        0.00004324,
        0.00004311,
        0.0000437,
        0.00004211
    ],
    // Open
    o: [
        0.00004392,
        0.00004501,
        0.00004324,
        0.00004311,
        0.0000437
    ],
    // High
    h: [
        0.00004504,
        0.00004401,
        0.00004376,
        0.0000437,
        0.0000431
    ],
    // Low
    l: [
        0.00004392,
        0.00004324,
        0.00004311,
        0.0000437,
        0.00004211
    ],
    // Volume
    v: [
        0.9682618499999999,
        73.98493420589,
        3.018485526814107,
        0.0809761,
        143.76744365959996
    ]
}

GetTrades

Get recent trades on current wallet address.

Request GET /v1/trades/:addr/:pairId/:size

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• params

  • pairId The id of the trading token pair.
  • size The number of recent trades to get.
  • addr Trader eth address

Sample Request

http://dex.top/v1/trades/0x6a83D834951F29924559B8146D11a70EaB8E328b/ETH_ADX/2

Sample response

{
  "trades": [
    {
      "pairId": "ETH_ADX",
      "timeMs": "1525231321804",
      "orderId": "10000776",
      "isBuyer": true,
      "isMaker": false,
      "price": "0.00156080",
      "amount": "163.06101648",
      "fee": "0.32612203"
    },
    {
      "pairId": "ETH_ADX",
      "timeMs": "1525231321804",
      "orderId": "10000776",
      "isBuyer": true,
      "isMaker": false,
      "price": "0.00155810",
      "amount": "242.11581591",
      "fee": "0.48423163"
    }
  ]
}

Account APIs

Login

API used to login to exchange.

Request POST /v1/authenticate

Sample Request

{
  "email": 'flynn@dex.top',
  "password": '**********',
  "durationSec": 86400  // The default value is 259200, i.e. 3 days. The maximum is 30 days.
}

Response:

{
  "token": 'eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJTdGRDbGFpbXMiOnsiYXVkIjoiREV4IFNlcnZlcnMiLCJleHAiOjE1MjEyNjU3MTcsImp0aSI6ImEwY2VmNGQ0LTBmNWQtNDVmMS05MzYwLTkwOGQ0MmY1ZWMzYiIsImlhdCI6MTUyMTAwNjUxNywiaXNzIjoiREV4Iiwic3ViIjoiMiJ9fQ.r0kwUhMh8pZCGazZt0Lp4gPl1JEOdQIGyXlNpi5zHQ90NloUXNuEhlSRvSrTu5rug6nhkO_cbvIGc2okeC9zLQ',
  "user": {

  },
}

Balance

Get the balances of all tokens of a trader.

Request GET /v1/balances/:traderAddr

• HTTP Request Header

  • Authorization: Bearer <token> Token obtained when signing in.

• params

  • traderAddr Trader address

Sample Request

http://dex.top/v1/balances

Sample Response

{
  "balances": [
    {
      "tokenId": "ADX", // TokenId
      "total": "0", // Token total amount
      "active": "0", // Token amount can withdraw
      "locked": "0", // Token amount is locked at this moment
      "withdrawing": "0"
    },
    {
      "tokenId": "EOS",
      "total": "0",
      "active": "0",
      "locked": "0",
      "withdrawing": "0"
    },
    {
      "tokenId": "ETH",
      "total": "1.00000000",
      "active": "0.99790000",
      "locked": "0.00210000",
      "withdrawing": "0"
    }
  ],
  "estimatedValue": "" // Account total estimate value
}