API | FixedFloat

Introduction

The FixedFloat API allows you to automate the receipt of information about the exchange rates of currencies, created orders, presented on the FixedFloat service, create orders and manage them using it.

To use the FixedFloat API, you need to get an API key and an API secret.

Getting the API key

To get an API Key and API Secret, follow these steps:

Sign in or Register in the FixedFloat
Go to the API management section
Click the "Generate" button and follow the instructions in the window that appears
Copy the API Key and API Secret and keep them in a safe place. Use these parameters for requests to the FixedFloat API

Request and example

The sent data must be in JSON format with UTF-8 encoding.

For successful API requests, all requests must contain a few mandatory headers:

The Content-Type header must be application/json; charset=UTF-8
The X-API-KEY header should contain your received API Key (YOUR_API_KEY)
The X-API-SIGN header must contain the signature GENERATED_SIGN. To get the signature you must use your API Secret (YOUR_API_SECRET) as the HMAC SHA256 operation key and the json data string as the value.

X-API-SIGN generation

Curl Python PHP


			[linux]$ echo -n 'DATA_JSON' | openssl dgst -sha256 -hmac "YOUR_API_SECRET"
			(stdin)= GENERATED_SIGN


			cURL -X POST \
			  -H "Accept: application/json" \
			  -H "X-API-KEY: YOUR_API_KEY" \
			  -H "X-API-SIGN: GENERATED_SIGN" \
			  -H "Content-Type: application/json; charset=UTF-8" \
			  -d 'DATA_JSON'  
			  "https://fixedfloat.com/api/v2/METHOD" -L


			import hmac
			import json
			import hashlib
			import requests
			  
			def sign(data):
			  return hmac.new(
			    key=YOUR_API_SECRET.encode(),
			    msg=data.encode(),
			    digestmod=hashlib.sha256
			  ).hexdigest()
			  
			  
			def request(method, params={}):
			  url = 'https://ff.io/api/v2/' + method
			  data = json.dumps(params)
			  headers = {
			    'X-API-KEY':  YOUR_API_KEY,
			    'X-API-SIGN': sign(data)
			  }
			  r = requests.post(url, data=data, headers=headers)
			  return r.json()
			  
			request(METHOD, DATA)


			<?php
			  function sign($data) {
			    return hash_hmac('sha256', $data, YOUR_API_SECRET);
			  }
			  
			  function request($method, $data) {
		        $url = 'https://ff.io/api/v2/'.$method;
		        
		        $req = json_encode($data);
		        
		        $ch = curl_init();
		        curl_setopt($ch, CURLOPT_URL, $url);
		        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
		        curl_setopt($ch, CURLOPT_POST, true);
		        curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
		        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
		          'Content-Type:application/json',
		          'X-API-KEY: '  . YOUR_API_KEY,
		          'X-API-SIGN: ' . sign($req)
		        ));
		        $response = curl_exec($ch);
		        curl_close($ch);
		        
		        $result = json_decode($response, true);
		        if ($result['code'] == 0) {
		          return $result['data'];
		        } else {
		          throw new Exception($result['msg'], $result['code']);
		        }
		      }
		      
		      request(METHOD, DATA);
			?>

Request limits

The request limit per minute is 250 weight units.

The /api/v2/create request costs 50 weight units, all other requests cost 1 weight unit.

If the limit is exceeded, your token will be temporarily blocked. With each subsequent exceeding of the limit after unlocking, the blocking time will increase

Official Libraries

You can use ready made libraries to use the FixedFloat API:

PHP (Download)
Python (Download)

Available currencies

POSThttps://ff.io/api/v2/ccies

Getting a list of currencies supported by the FixedFloat service, as well as data on their display and information about the availability for receiving and sending.

Parameters

There is no need to pass parameters for this request.

X-API-SIGN is generated by calling the HMAC SHA256 function from an empty string if no parameters are passed, or from an empty JSON object.

Example request

Curl Python PHP


			cURL -X POST \
			  -H "Accept: application/json" \
			  -H "X-API-KEY: YOUR_API_KEY" \
			  -H "X-API-SIGN: GENERATED_SIGN" \
			  -H "Content-Type: application/json; charset=UTF-8" \
			  "https://fixedfloat.com/api/v2/ccies" -L


			<?php
			  require_once('fixedfloat.php');
			  
			  $ff = new FixedFloatApi(YOUR_API_KEY, YOUR_API_SECRET);
			  
			  return $ff->ccies();
			?>

Response

A successful response contains an array of currency information objects.

Field	Type	Description
code	number	Response status code. If the request is successful, then the status code is "0", otherwise it is an error
msg	string	Status message
data	Array	List of currencies supported by FixedFloat
data[].code	string	Unique currency code in FixedFloat
data[].coin	string	Common asset ticker
data[].network	string	Blockchain network in which this asset is represented
data[].name	string	Name of currency
data[].recv	boolean	Availability of currency for acceptance into the service from the client
data[].send	boolean	Availability of currency to send to the client
data[].tag	string	The name of the additional field, if available; otherwise null
data[].logo	string	Link to currency image
data[].color	string	Currency color specified in HEX format
data[].priority	number	Priority in the list of currencies of the service

Example JSON response


			{
  "code": 0,
  "msg": "",
  "data": [
    {
      "code": "BTC",
      "coin": "BTC",
      "network": "BTC",
      "name": "Bitcoin",
      "recv": true,
      "send": true,
      "tag": null,
      "logo": "https://fixedfloat.com/assets/images/coins/svg/btc.svg",
      "color": "#f7931a",
      "priority": "5",
    },
    ...,
  ],
}

Exchange rate

POSThttps://ff.io/api/v2/price

Getting the exchange rate of a pair of currencies in the selected direction and type of rate.

ATTENTION! To get the exchange rates of all available currencies, you should use the export rate file available at the link https://ff.io/rates.xml

For this method, as well as for method /api/v2/create, it is possible to increase accrued earnings under the affiliate program using parameter afftax.

The final exchange rate when passing parameters afftax and refcode depends on whether your affiliate program code has been approved for earning for orders generated by the API and the base percentage (AFFBASE) set for your code, and will be calculated according to the formula:


total = FF - AFFB + afftax, if afftax < FF - AFFB
total = afftax x 2        , if FF - AFFB < afftax < FF
total = FF + afftax       , if afftax > FF

where FF is the base percentage of the service for the selected type of exchange rate (1% for a fixed rate and 0.5% for a floating rate);
AFFB is the base percentage of the service profit set for your affiliate program code, for the selected type of exchange rate (AFFBASE for a fixed rate and AFFBASE÷2 for a floating rate)

For clarity, we suggest that you familiarize yourself with the table below with AFFBASE=0.4, where FFP = FF - AFFB:

FIXED RATE			FLOAT RATE
Total	FFP	afftax	Total	FFP	afftax
1.0	0.6	0.4	0.5	0.3	0.2
1.1	0.6	0.5	0.55	0.3	0.25
1.2	0.6	0.6	0.6	0.3	0.3
1.4	0.7	0.7	0.7	0.35	0.35
1.6	0.8	0.8	0.8	0.4	0.4
1.8	0.9	0.9	0.9	0.45	0.45
2.0	1.0	1.0	1.0	0.5	0.5
2.1	1.0	1.1	1.05	0.5	0.55
2.2	1.0	1.2	1.1	0.5	0.6

If your affiliate code did not have a base API earnings percentage set, then the final exchange rate will be calculated as:


FF + afftax

where FF is the base percentage of the service for the selected type of exchange rate (1% for a fixed rate and 0.5% for a floating rate).

Earnings will be credited to your account if the affiliate program code was passed in the refcode parameter and this code belongs to your account. Otherwise, the afftax and refcode parameters will be ignored.

Parameters

Name	Required	Type	Description
type	true	string	Order type
fromCcy	true	string	Code of the currency the client wants to send
toCcy	true	string	Code of the currency the client wants to receive
direction	true	string	The direction of the exchange determines whether the client wants to send a certain amount or receive a certain amount. Can take one of the following values: ● from — if the client wants to send the amount amount in the currency fromCcy ● to — if the client wants to receive the amount amount in the currency toCcy
amount	true	numeric	If direction="from", then this is the amount in currency fromCcy that the client wants to send. If direction="to", then this is the amount in currency toCcy that the client wants to receive
ccies	false	boolean	Adding a list of currencies to the response with information about the availability for sending and receiving
usd	false	boolean	Amount in USD, by which fromAmount or toAmount will be changed in case the limits are exceeded
refcode	false	string	Affiliate program code for which earnings will be accrued under the affiliate program. If the afftax parameter is not set and this affiliate program code does not participate in earning via the API, passing this parameter will not affect anything. It is possible to transfer only affiliate program codes that were received in the same account in which the API key used for this request was received
afftax	false	float	Desired earnings under the affiliate program as a percentage of the exchange amount. Affects the final exchange rate and earnings under the affiliate program if the refcode parameter is also set.

Example request

Curl Python PHP


			cURL -X POST \
			  -H "Accept: application/json" \
			  -H "X-API-KEY: YOUR_API_KEY" \
			  -H "X-API-SIGN: GENERATED_SIGN" \
			  -H "Content-Type: application/json; charset=UTF-8" \
			  -d '{"fromCcy":"BTC","toCcy":"USDTTRC","amount":0.5,direction":"from","type":"float"}'  
			  "https://fixedfloat.com/api/v2/create" -L


			<?php
			  require_once('fixedfloat.php');
			  
			  $ff = new FixedFloatApi(YOUR_API_KEY, YOUR_API_SECRET);
			  
		      $data = array(
		        'fromCcy'    => 'BTC',
		        'toCcy'      => 'USDTTRC',
		        'amount'     => '0.5',
		        'direction'  => 'from',
		        'type'       => 'float',
		      );
			  
			  return $ff->price($data);
			?>

Response

A successful response contains information about the currencies of the selected pair, the exchange rate, and the amount sent and received.

Field	Type	Description
code	number	Response status code. If the request is successful, then the status code is "0", otherwise it is an error
msg	string	Status message
data	Object	An object with information about the currencies of the selected pair, the exchange rate, and the amount sent and received
data.from	Object	Data about the asset that the client must send
data.from.code	string	Unique currency code in FixedFloat
data.from.network	string	Blockchain network in which this asset is represented
data.from.coin	string	Common asset ticker
data.from.amount	string	Amount that the client needs to send
data.from.rate	string	Final exchange rate
data.from.precision	integer	Rounding accuracy
data.from.min	string	Minimum amount
data.from.max	string	Maximum amount
data.from.usd	string	Equivalent in USD
data.from.btc	string	Equivalent in BTC
data.to	Object	Data about the asset that the client will receive
data.to.code	string	Unique currency code in FixedFloat
data.to.network	string	Blockchain network in which this asset is represented
data.to.coin	string	Common asset ticker
data.to.amount	string	Amount that the client must to receive
data.to.rate	string	Final exchange rate
data.to.precision	integer	Rounding accuracy
data.to.min	string	Minimum amount
data.to.max	string	Maximum amount
data.to.usd	string	Equivalent in USD
data.errors	Array	An array of a list of errors. If the array is empty, then creating an order with these parameters is possible. The array may contain the following errors: ● MAINTENANCE_FROM — Currency from data.from object under maintenance ● MAINTENANCE_TO — Currency from object data.to under maintenance ● OFFLINE_FROM — Currency from object data.from is not available ● OFFLINE_TO — Currency from object data.to is not available ● RESERVE_FROM — Not enough currency reserves from object data.from ● RESERVE_TO — Not enough currency reserves from object data.to ● LIMIT_MIN — Amount less than limit ● LIMIT_MAX — The amount is greater than the limit
data.ccies	Array	Added if the ccies parameter is true. An array containing a list of objects with information about the availability for sending and receiving currencies
data.ccies[].code	string	Unique currency code in FixedFloat
data.ccies[].recv	boolean	Availability of currency for acceptance into the service from the client
data.ccies[].send	boolean	Availability of currency to send to the client

Example JSON response


			{
  "code": 0,
  "msg": "",
  "data": {
    "from": {
      "code": "BSC",
      "network": "BSC",
      "coin": "BNB",
      "amount": "0.040297",
      "rate": "0.01452202",
      "precision": 8,
      "min": "0.005053",
      "max": "967.072057",
      "usd": "12.28",
      "btc": "0.00058813",
    },
    "to": {
      "code": "BTC",
      "network": "BTC",
      "coin": "BTC",
      "amount": "0.00055984",
      "rate": "68.164781",
      "precision": 8,
      "min": "0.0000479",
      "max": "14.04381911",
      "usd": "11.69",
    },
    "errors": [],
    "ccies": [
      {
        "code": "ADA",
        "recv": true,
        "send": true,
      },
      ...,
    ],
  },
}

Create order

POSThttps://ff.io/api/v2/create

Creating an order for the exchange of selected currencies with a specified amount and address.

For this method, as well as for the /api/v2/price method, it is possible to increase accrued earnings under the affiliate program using the parameter afftax. The rules for using this parameter are described in method /api/v2/price

Parameters

Name	Required	Type	Description
type	true	string	Order type
fromCcy	true	string	Code of the currency the client wants to send
toCcy	true	string	Code of the currency the client wants to receive
direction	true	string	The direction of the exchange determines whether the client wants to send a certain amount or receive a certain amount. Can take one of the following values: ● from — if the client wants to send the amount amount in the currency fromCcy ● to — if the client wants to receive the amount amount in the currency toCcy
amount	true	numeric	If direction="from", then this is the amount in currency fromCcy that the client wants to send. If direction="to", then this is the amount in currency toCcy that the client wants to receive
toAddress	true	string	Destination address to which the funds will be dispatched upon the successful completion of the Order
tag	false	boolean	If you need to specify a Memo or Destination Tag when sending, you should specify it here. This parameter can be omitted by specifying the MEMO or Destination Tag in toAddress separated by a colon.
refcode	false	string	Affiliate program code for which earnings will be accrued under the affiliate program. If the afftax parameter is not set and this affiliate program code does not participate in earning via the API, passing this parameter will not affect anything. It is possible to transfer only affiliate program codes that were received in the same account in which the API key used for this request was received
afftax	false	float	Desired earnings under the affiliate program as a percentage of the exchange amount. Affects the final exchange rate and earnings under the affiliate program if the refcode parameter is also set.

Example request

Curl Python PHP


			cURL -X POST \
			  -H "Accept: application/json" \
			  -H "X-API-KEY: YOUR_API_KEY" \
			  -H "X-API-SIGN: GENERATED_SIGN" \
			  -H "Content-Type: application/json; charset=UTF-8" \
			  -d '{"fromCcy":"BTC","toCcy":"USDTTRC","amount":0.5,direction":"from","type":"float","toAddress":"TAzsQ9Gx8eqFNFSKbeXrbi45CuVPHzA8wr"}'  
			  "https://fixedfloat.com/api/v2/create" -L


			<?php
			  require_once('fixedfloat.php');
			  
			  $ff = new FixedFloatApi(YOUR_API_KEY, YOUR_API_SECRET);
			  
		      $data = array(
		        'fromCcy'    => 'BTC',
		        'toCcy'      => 'USDTTRC',
		        'amount'     => '0.5',
		        'direction'  => 'from',
		        'type'       => 'float',
		        'toAddress'  => 'TAzsQ9Gx8eqFNFSKbeXrbi45CuVPHzA8wr'
		      );
			  
			  return $ff->create($data);
			?>

Response

A successful response contains an object with information about all the data of the created order, including the token parameter, for later obtaining updated information about the order using the /api/v2/ method order, and order management.

Field	Type	Description
code	number	Response status code. If the request is successful, then the status code is "0", otherwise it is an error
msg	string	Status message
data	Object	Object with information about all the data of the created order
data.token	string	Order access token
data.id	string	Order ID. Consists of 6 characters
data.type	string	Order type. Can be one of the values: ● fixed — fixed rate order ● float — floating rate order
data.email	string	Email address for the order to receive notifications about changes in the order
data.status	string	Order status. Can be one of the values: ● NEW — New order ● PENDING — Transaction received, pending confirmation ● EXCHANGE — Transaction confirmed, exchange in progress ● WITHDRAW — Sending funds ● DONE — Order completed ● EXPIRED — Order expired ● EMERGENCY — Emergency, customer choice required
data.time	Object	Object containing timestamp data
data.time.reg	number	Order creation timestamp
data.time.start	number	Transaction receive timestamp
data.time.finish	number	Timestamp when the order was completed
data.time.update	number	Timestamp of last order update
data.time.expiration	number	Timestamp when order expires
data.time.left	number	The number of seconds before the end of the order
data.from	Object	An object containing information about the currency sent by clients and transactions
data.from.code	string	Currency code
data.from.coin	string	Common asset ticker
data.from.network	string	Blockchain network in which this asset is represented
data.from.name	string	Name of currency
data.from.alias	string	Alias for creating qr code
data.from.amount	string	Amount that the client needs to send
data.from.address	string	The destination address to which the user is ought to deposit his funds in order for the trade to execute
data.from.tag	string	MEMO or Destination Tag if required
data.from.addressMix	string	Address with a colon-connected tag
data.from.reqСonfirmations	number	Required number of transaction confirmations
data.from.maxСonfirmations	number	The maximum number of transaction confirmations that system updates
data.from.tx	Object	An object containing data about the received transaction
data.from.tx.id	string	Transaction hash
data.from.tx.amount	string	Transaction amount
data.from.tx.fee	string	Miner fee
data.from.tx.ccyfee	string	Currency of Miner fee
data.from.tx.timeReg	number	Transaction registration timestamp
data.from.tx.timeBlock	number	Timestamp for adding a transaction to a block
data.from.tx.confirmations	number	Number of transaction confirmations
data.to	Object	An object containing information about the currency received by the client and the transaction
data.to.code	string	Currency code
data.to.coin	string	Common asset ticker
data.to.network	string	Blockchain network in which this asset is represented
data.to.name	string	Name of currency
data.to.alias	string	Alias for creating qr code
data.to.amount	string	Amount that the client must to receive
data.to.address	string	The destination address to which the funds will be dispatched upon the successful completion of the order
data.to.tag	string	MEMO or Destination Tag if required
data.to.addressMix	string	Address with a colon-connected tag
data.to.tx	Object	An object containing data about the sent transaction
data.to.tx.id	string	Transaction hash
data.to.tx.amount	string	Transaction amount
data.to.tx.fee	string	Miner fee
data.to.tx.ccyfee	string	Currency of Miner fee
data.to.tx.timeReg	number	Transaction registration timestamp
data.to.tx.timeBlock	number	Timestamp for adding a transaction to a block
data.to.tx.confirmations	number	Number of transaction confirmations
data.back	Object	An object containing information about the currency returned to the client and the transaction
data.back.code	string	Currency code
data.back.coin	string	Common asset ticker
data.back.network	string	Blockchain network in which this asset is represented
data.back.name	string	Name of currency
data.back.alias	string	Alias for creating qr code
data.back.amount	string	The amount that the client should receive upon return, excluding the miner fee
data.back.address	string	The return address to which the funds will be sent when choosing a refund
data.back.tag	string	MEMO or Destination Tag if required
data.back.addressMix	string	Address with a colon-connected tag
data.back.tx	Object	An object containing data about the returned transaction
data.back.tx.id	string	Transaction hash
data.back.tx.amount	string	Transaction amount
data.back.tx.fee	string	Miner fee
data.back.tx.ccyfee	string	Currency of Miner fee
data.back.tx.timeReg	number	Transaction registration timestamp
data.back.tx.timeBlock	number	Timestamp for adding a transaction to a block
data.back.tx.confirmations	number	Number of transaction confirmations
data.emergency	Object	An object containing data about the emergency in the order
data.emergency.status	Array	Emergency status. Can be multiple values from: ● EXPIRED — the transaction was received after the expiration of the order ● LESS — a transaction was sent with an amount less than in the order ● MORE — a transaction was sent with an amount greater than in the order ● LIMIT — a transaction was sent with an amount less or more than the limit; used with LESS or MORE
data.emergency.choice	string	user choice. Can be one of the values: ● NONE — Choice not made ● EXCHANGE — Continue order at the new market rate ● REFUND — Make a refund minus the network commission
data.emergency.repeat	boolean	if true, then a repeated transaction has been received for this order

Example JSON response


			{
  "code": 0,
  "msg": "",
  "data": {
    "id": "TESTID",
    "type": "float",
    "email": "",
    "status": "NEW",
    "time": {
      "reg": 1676458603,
      "start": null,
      "finish": null,
      "update": 1676458603,
      "expiration": 1676460403,
      "left": 1800,
    },
    "from": {
      "code": "BTC",
      "coin": "BTC",
      "network": "BTC",
      "name": "Bitcoin",
      "alias": "bitcoin",
      "amount": "0.50000000",
      "address": "bc1qm8e58htm6qlhz5u7awhe4a5kxt3w86ffwtl9j0",
      "addressAlt": null,
      "tag": null,
      "tagName": null,
      "reqСonfirmations": 1,
      "maxСonfirmations": 6,
      "tx": {
        "id": null,
        "amount": null,
        "fee": null,
        "ccyfee": null,
        "timeReg": null,
        "timeBlock": null,
        "confirmations": null,
      },
    },
    "to": {
      "code": "USDTTRC",
      "coin": "USDT",
      "network": "TRX",
      "name": "Tether (TRC20)",
      "alias": "usdt",
      "amount": "11062.06500000",
      "address": "TVnbp1VCJ1TpWMom4k3URfFky9FGfPdZPd",
      "tag": null,
      "tagName": null,
      "tx": {
        "id": null,
        "amount": null,
        "fee": null,
        "ccyfee": null,
        "timeReg": null,
        "timeBlock": null,
        "confirmations": null,
      },
    },
    "back": {
      "code": null,
      "coin": null,
      "network": null,
      "name": null,
      "alias": null,
      "amount": null,
      "address": null,
      "tag": null,
      "tagName": null,
      "tx": {
        "id": null,
        "amount": null,
        "fee": null,
        "ccyfee": null,
        "timeReg": null,
        "timeBlock": null,
        "confirmations": null,
      },
    },
    "emergency": {
      "status": [],
      "choice": "NONE",
      "repeat": 0,
    },
    "token": "TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7",
  },
}

Get order details

POSThttps://ff.io/api/v2/order

The method receives the updated order data.

Parameters

Name	Required	Type	Description
id	true	string	Order ID
token	true	string	Order security token received when creating an order in data.token

Example request

Curl Python PHP


			cURL -X POST \
			  -H "Accept: application/json" \
			  -H "X-API-KEY: YOUR_API_KEY" \
			  -H "X-API-SIGN: GENERATED_SIGN" \
			  -H "Content-Type: application/json; charset=UTF-8" \
			  -d '{"id":"TESTID","token":"TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7"}'  
			  "https://fixedfloat.com/api/v2/order" -L


			<?php
			  require_once('fixedfloat.php');
			  
			  $ff = new FixedFloatApi(YOUR_API_KEY, YOUR_API_SECRET);
			  
		      $data = array(
		        'id'    => 'TESTID',
		        'token' => 'TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7',
		      );
			  
			  return $ff->order($data);
			?>

Response

A successful response contains contains an object with information about all the data of the created order

Field	Type	Description
code	number	Response status code. If the request is successful, then the status code is "0", otherwise it is an error
msg	string	Status message
data	Object	Object with information about all the data of the created order
data.id	string	Order ID. Consists of 6 characters
data.type	string	Order type. Can be one of the values: ● fixed — fixed rate order ● float — floating rate order
data.email	string	Email address for the order to receive notifications about changes in the order
data.status	string	Order status. Can be one of the values: ● NEW — New order ● PENDING — Transaction received, pending confirmation ● EXCHANGE — Transaction confirmed, exchange in progress ● WITHDRAW — Sending funds ● DONE — Order completed ● EXPIRED — Order expired ● EMERGENCY — Emergency, customer choice required
data.time	Object	Object containing timestamp data
data.time.reg	number	Order creation timestamp
data.time.start	number	Transaction receive timestamp
data.time.finish	number	Timestamp when the order was completed
data.time.update	number	Timestamp of last order update
data.time.expiration	number	Timestamp when order expires
data.time.left	number	The number of seconds before the end of the order
data.from	Object	An object containing information about the currency sent by clients and transactions
data.from.code	string	Currency code
data.from.coin	string	Common asset ticker
data.from.network	string	Blockchain network in which this asset is represented
data.from.name	string	Name of currency
data.from.alias	string	Alias for creating qr code
data.from.amount	string	Amount that the client needs to send
data.from.address	string	The destination address to which the user is ought to deposit his funds in order for the trade to execute
data.from.tag	string	MEMO or Destination Tag if required
data.from.addressMix	string	Address with a colon-connected tag
data.from.reqСonfirmations	number	Required number of transaction confirmations
data.from.maxСonfirmations	number	The maximum number of transaction confirmations that system updates
data.from.tx	Object	An object containing data about the received transaction
data.from.tx.id	string	Transaction hash
data.from.tx.amount	string	Transaction amount
data.from.tx.fee	string	Miner fee
data.from.tx.ccyfee	string	Currency of Miner fee
data.from.tx.timeReg	number	Transaction registration timestamp
data.from.tx.timeBlock	number	Timestamp for adding a transaction to a block
data.from.tx.confirmations	number	Number of transaction confirmations
data.to	Object	An object containing information about the currency received by the client and the transaction
data.to.code	string	Currency code
data.to.coin	string	Common asset ticker
data.to.network	string	Blockchain network in which this asset is represented
data.to.name	string	Name of currency
data.to.alias	string	Alias for creating qr code
data.to.amount	string	Amount that the client must to receive
data.to.address	string	The destination address to which the funds will be dispatched upon the successful completion of the order
data.to.tag	string	MEMO or Destination Tag if required
data.to.addressMix	string	Address with a colon-connected tag
data.to.tx	Object	An object containing data about the sent transaction
data.to.tx.id	string	Transaction hash
data.to.tx.amount	string	Transaction amount
data.to.tx.fee	string	Miner fee
data.to.tx.ccyfee	string	Currency of Miner fee
data.to.tx.timeReg	number	Transaction registration timestamp
data.to.tx.timeBlock	number	Timestamp for adding a transaction to a block
data.to.tx.confirmations	number	Number of transaction confirmations
data.back	Object	An object containing information about the currency returned to the client and the transaction
data.back.code	string	Currency code
data.back.coin	string	Common asset ticker
data.back.network	string	Blockchain network in which this asset is represented
data.back.name	string	Name of currency
data.back.alias	string	Alias for creating qr code
data.back.amount	string	The amount that the client should receive upon return, excluding the miner fee
data.back.address	string	The return address to which the funds will be sent when choosing a refund
data.back.tag	string	MEMO or Destination Tag if required
data.back.addressMix	string	Address with a colon-connected tag
data.back.tx	Object	An object containing data about the returned transaction
data.back.tx.id	string	Transaction hash
data.back.tx.amount	string	Transaction amount
data.back.tx.fee	string	Miner fee
data.back.tx.ccyfee	string	Currency of Miner fee
data.back.tx.timeReg	number	Transaction registration timestamp
data.back.tx.timeBlock	number	Timestamp for adding a transaction to a block
data.back.tx.confirmations	number	Number of transaction confirmations
data.emergency	Object	An object containing data about the emergency in the order
data.emergency.status	Array	Emergency status. Can be multiple values from: ● EXPIRED — the transaction was received after the expiration of the order ● LESS — a transaction was sent with an amount less than in the order ● MORE — a transaction was sent with an amount greater than in the order ● LIMIT — a transaction was sent with an amount less or more than the limit; used with LESS or MORE
data.emergency.choice	string	user choice. Can be one of the values: ● NONE — Choice not made ● EXCHANGE — Continue order at the new market rate ● REFUND — Make a refund minus the network commission
data.emergency.repeat	boolean	if true, then a repeated transaction has been received for this order

Example JSON response


			{
  "code": 0,
  "msg": "",
  "data": {
    "id": "TESTID",
    "type": "float",
    "email": "",
    "status": "NEW",
    "time": {
      "reg": 1676458603,
      "start": null,
      "finish": null,
      "update": 1676458603,
      "expiration": 1676460403,
      "left": 1800,
    },
    "from": {
      "code": "BTC",
      "coin": "BTC",
      "network": "BTC",
      "name": "Bitcoin",
      "alias": "bitcoin",
      "amount": "0.50000000",
      "address": "bc1qm8e58htm6qlhz5u7awhe4a5kxt3w86ffwtl9j0",
      "addressAlt": null,
      "tag": null,
      "tagName": null,
      "reqСonfirmations": 1,
      "maxСonfirmations": 6,
      "tx": {
        "id": null,
        "amount": null,
        "fee": null,
        "ccyfee": null,
        "timeReg": null,
        "timeBlock": null,
        "confirmations": null,
      },
    },
    "to": {
      "code": "USDTTRC",
      "coin": "USDT",
      "network": "TRX",
      "name": "Tether (TRC20)",
      "alias": "usdt",
      "amount": "11062.06500000",
      "address": "TVnbp1VCJ1TpWMom4k3URfFky9FGfPdZPd",
      "tag": null,
      "tagName": null,
      "tx": {
        "id": null,
        "amount": null,
        "fee": null,
        "ccyfee": null,
        "timeReg": null,
        "timeBlock": null,
        "confirmations": null,
      },
    },
    "back": {
      "code": null,
      "coin": null,
      "network": null,
      "name": null,
      "alias": null,
      "amount": null,
      "address": null,
      "tag": null,
      "tagName": null,
      "tx": {
        "id": null,
        "amount": null,
        "fee": null,
        "ccyfee": null,
        "timeReg": null,
        "timeBlock": null,
        "confirmations": null,
      },
    },
    "emergency": {
      "status": [],
      "choice": "NONE",
      "repeat": 0,
    },
  },
}

Emergency Action Choice

POSThttps://ff.io/api/v2/emergency

Selecting an action (continuation of exchange or return) for an order in the EMERGENCY status.

Parameters

Name	Required	Type	Description
id	true	string	Order ID
token	true	string	Order security token received when creating an order in data.token
choice	true	string	Choice of action in the EMERGENCY status. Can be one of the values: ● EXCHANGE — Continue the exchange at the market rate at the time the selection was made or at the time the order was corrected ● REFUND — Refund minus miner fee
address	false*	string	The address to which the refund is to be made. Required if choice="REFUND".
tag	false	string	MEMO or Destination Tag if required

Example request

Curl Python PHP


			cURL -X POST \
			  -H "Accept: application/json" \
			  -H "X-API-KEY: YOUR_API_KEY" \
			  -H "X-API-SIGN: GENERATED_SIGN" \
			  -H "Content-Type: application/json; charset=UTF-8" \
			  -d '{"id":"TESTID","token":"TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7","choice":"EXCHANGE"}'  
			  "https://fixedfloat.com/api/v2/emergency" -L


			<?php
			  require_once('fixedfloat.php');
			  
			  $ff = new FixedFloatApi(YOUR_API_KEY, YOUR_API_SECRET);
			  
		      $data = array(
		        'id'    => 'TESTID',
		        'token' => 'TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7',
		        'choice' => 'EXCHANGE',
		      );
			  
			  return $ff->emergency($data);
			?>

Response

A successful response contains True if the choice in the order has been set.

Field	Type	Description
code	number	Response status code. If the request is successful, then the status code is "0", otherwise it is an error
msg	string	Status message
data	boolean	True if successful

Example JSON response


			{
  "code": 0,
  "msg": "",
  "data": true,
}

Subscribe to notification

POSThttps://ff.io/api/v2/setEmail

Subscribe to receive notifications by email about a change in the status of the selected order.

Parameters

Name	Required	Type	Description
id	true	string	Order ID
token	true	string	Order security token received when creating an order in data.token
email	false*	string	Email address to which email notifications about order status changes should be sent

Example request

Curl Python PHP


			cURL -X POST \
			  -H "Accept: application/json" \
			  -H "X-API-KEY: YOUR_API_KEY" \
			  -H "X-API-SIGN: GENERATED_SIGN" \
			  -H "Content-Type: application/json; charset=UTF-8" \
			  -d '{"id":"TESTID","token":"TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7","email":"[email protected]"}'  
			  "https://fixedfloat.com/api/v2/setEmail" -L


			<?php
			  require_once('fixedfloat.php');
			  
			  $ff = new FixedFloatApi(YOUR_API_KEY, YOUR_API_SECRET);
			  
		      $data = array(
		        'id'    => 'TESTID',
		        'token' => 'TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7',
		        'email' => '[email protected]',
		      );
			  
			  return $ff->setEmail($data);
			?>

Response

A successful response contains True if the notification has been subscribed.

Field	Type	Description
code	number	Response status code. If the request is successful, then the status code is "0", otherwise it is an error
msg	string	Status message
data	boolean	True if successful

Example JSON response


			{
  "code": 0,
  "msg": "",
  "data": true,
}

Images of QR codes

POSThttps://ff.io/api/v2/qr

Getting a list of images of QR codes for an order

Parameters

Name	Required	Type	Description
id	true	string	Order ID
token	true	string	Order security token received when creating an order in data.token

Example request

Curl Python PHP


			cURL -X POST \
			  -H "Accept: application/json" \
			  -H "X-API-KEY: YOUR_API_KEY" \
			  -H "X-API-SIGN: GENERATED_SIGN" \
			  -H "Content-Type: application/json; charset=UTF-8" \
			  -d '{"id":"TESTID","token":"TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7","choice":"EXCHANGE"}'  
			  "https://fixedfloat.com/api/v2/qr" -L


			<?php
			  require_once('fixedfloat.php');
			  
			  $ff = new FixedFloatApi(YOUR_API_KEY, YOUR_API_SECRET);
			  
		      $data = array(
		        'id'    => 'TESTID',
		        'token' => 'TESTTOKENvRB90NOtr397kHY3PJ1VRy2p29HHaN7',
		      );
			  
			  return $ff->qr($data);
			?>

Response

A successful response contains an array of objects with information about the name of the QR code and its image in Base64 format.

Field	Type	Description
code	number	Response status code. If the request is successful, then the status code is "0", otherwise it is an error
msg	string	Status message
data	Array	Array of objects with information about the name of the QR code and its image in Base64 format
data[].title	string	QR code name
data[].src	string	Base64 encoded QR code image
data[].checked	boolean	If True, then defined as the default QR code

Example JSON response


			{
  "code": 0,
  "msg": "",
  "data": [
    {
      "title": "With amount",
      "src": "data:image/png;base64,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",
      "checked": true,
    },
    {
      "title": "Address",
      "src": "data:image/png;base64,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",
      "checked": false,
    },
  ],
}