API Integration Guide

​
Welcome to Swapzone.io!
Our cryptocurrency exchange aggregator is gathering the instant swap platforms into one interface with the use of service provider’s APIs. To get you started off easily, we have written a unified adapter – all you need to do is copy it for your service and prepare for launch at Swapzone.
If you would like to chat or get more information on partnering with us, you can join our Telegram group or reach out directly at [email protected].
We are constantly expanding the range of services supported for exchanges and currencies supported. Of course, we are always open to future service integrations if the partners share our values.
Integrate your instant exchange service to swapzone.io with the use of our adapter – the Interface-type JavaScript object. Interface is a wrapper of the Adapter class that is meant to execute Adapter pattern. It also ensures interaction methods to be universal and data to be normalized. As the following steps are fulfilled, please drop us a message at [email protected]
The structure of Adapter class provided below:
const axios = require('axios');
const Interface = require('../interface');
/**
 * Adapter class
 */
class AdapterName extends Interface {
  constructor() {
    super();
    //the method is derived from Interface to set a unique key
    //to your adapter
    this.registerMemdata({ key: 'adaptername' });
    this.request = axios.create({
      baseURL: 'https://yourapiurl.com',
    });
  }
​
  async getCurrencies() {
    const { data } = await this.request.get('get-currencies');
    const currencies = data.currencies.map(currency => currency.ticker.toLowerCase());
    return currencies;
  }
​
  async getLimit({ from, to }) {
    const { data } = await this.request.get('get-limits', {
      params: {
        from,
        to
      }
    });
​
    return {
      from,
      to,
      min: data.limits.min || null,
      max: data.limits.max || null,
    };
  }
​
  async getEstimate({ from, to, amount }) {
    const sendParams = {
      from,
      to,
      amount,
    };
​
    const { data } = await this.request.post('get-estimate', sendParams);
​
    return {
      from: currencyFrom,
      to: currencyTo,
      amountFrom: amount,
      amountTo: data.estimate,
    };
  }
​
  async createOrder({ from, to, amount, addressReceive, extraIdTo }) {
    const sendParams = {
      from,
      to,
      amount,
      addressReceive,
      extraIdTo,
    };
​
    const { data: createdOrder } = await this.request.post('create-order', sendParams);
​
    const order = {
      status: 'waiting',
      from,
      to,
      orderId: createdOrder.data.orderId,
      addressReceive,
      addressDeposit: createdOrder.data.exchangeAddress.address,
      extraIdDeposit: createdOrder.data.exchangeAddress.tag || '',
    };
​
    return order;
  }
​
  async getOrderData(orderId) {
    const { data: orderData } = await this.request.get(`get-order-data/${orderId}`);
​
    const updateData = {
      status: orderData.status || 'waiting',
      amountReceive: orderData.depositCoinAmount,
    };
​
    return updateData;
  }
}
Adapter class method description
getCurrencies
Method to obtain the currencies available for exchange at your service. As a result, the entries of currencies get returned in the lower register.
Input parameters
Input parameters not defined.
Return value:
Type
Description
Array
Entries of currencies returned in the lower register
Example:
    ['btc', 'eth', 'xrp', ...]
getLimit
Method returning min and max exchange limits of deposited currency within an available exchange pair.
Input parameters
Object containing fields:
Name
Type
Description
from
String
Ticker of the exchanged currency
to
String
Ticker of the currency to receive after exchange
Example:
    {
      from : 'btc',
      to: 'eth'
    }
Return value
Name
Type
Description
from
String
Ticker of exchanged currency
to
String
Ticker of the currency to receive after exchange
min
Number || String || null
Minimal amount of currency to deposit
max
Number || String || null
Maximum amount to currency to deposit
Example:
    {
      from : 'btc',
      to: 'eth'
      min: 0.001,
      max: 10
    }
If an exchange pair is unavailable, the object is returned with an error:
{ error: 'pair is unavailable for exchanges' }
getEstimate
Method returning estimated amount to currency to receive after exchange
Input parameters
Object containing fields:
Name
Type
Description
from
String
Ticker of the currency to deposit for exchange
to
String
Ticker of the currency to receive after exchange
amount
String
Exchange deposit amount
Example:
    {
      from : 'btc',
      to: 'eth',
      amount: '0.01'
    }
Return value
Object containing fields:
Name
Type
Description
from
String
Ticker of the currency to deposit for exchange
to
String
Ticker of the currency to receive after exchange
amountFrom
Number || String
Exchange deposit amount
amountTo
Number || String
Amount to receive after exchange
Example:
    {
      from : 'btc',
      to: 'eth'
      amountFrom: 0.01,
      amountTo: 0.4817753
    }
If an exchange pair is unavailable, the object is returned with an error:
{ error: 'pair is unavailable for exchanges' }
createOrder
Method to create the exchange transaction order. 
Input parameters
Object containing fields:
Name
Type
Description
from
String
Ticker of the currency to deposit for exchange
to
String
Ticker of the currency to receive after exchange
amount
String
Exchange deposit amount
addressReceive
String
Receiving address
extraIdTo?
String
Transaction ID (optional)
Example:
    {
      from : 'btc',
      to: 'eth',
      amount: '0.01',
      addressReceive: '0xeAe68187a1d54524d4b4717DBC08222d8f4A386D'
      extraIdTo: ''
    }
Return value
Object containing transaction data:
Name
Type
Description
status
String
Transaction status (default: 'waiting')
from
String
Ticker of the currency to deposit to exchange
to
String
Ticker of the currency to receive after exchange
orderId
String
Transaction ID 
addressReceive
String
Receiving address
addressDeposit
String
Exchange deposit address
extraIdDeposit
String
Deposit transaction ID (optional)
Example:
    {
      status: 'waiting',
      from : 'btc',
      to: 'eth',
      orderId: '0d14b3s12g9'
      addressReceive: '0xeAe68187a1d54524d4b4717DBC08222d8f4A386D',
      addressDeposit: '1MNLT2LWQST1VCEc2xc9qF6eqHdW8mGsfQ',
      extraIdDeposit: ''
    }
getOrderData
Method returning current transaction status.
Input parameters
Object containing fields:
Name
Type
Description
orderId
String
Transaction ID
Return value
Object containing transaction data. The fields may vary depending on transaction status:
Name
Type
Description
status
String
Transaction status
hashDeposit?
String
Transaction hash (from)
hashReceive?
String
Transaction hash (to)
addressReceive?
String
Receiving address
extraIdReceive?
String
Receiving transaction ID
amountDeposit?
Number || String
Amount of currency deposited
amountReceive?
Number || String
Amount of currency received
Example:
    {
      status: 'waiting',
      hashDeposit: '',
      hashReceive: '',
      addressReceive: '0xeAe68187a1d54524d4b4717DBC08222d8f4A386D',
      extraIdReceive: '',
      amountDeposit: 0.01,
      amountReceive:  0.4817753,
    }
​
Last updated 3 months ago
Type	Description
Array	Entries of currencies returned in the lower register
Name	Type	Description
from	String	Ticker of the exchanged currency
to	String	Ticker of the currency to receive after exchange