Faast SWAP API

Introduction ¶

Overview ¶

The goal of the Faast API is to provide an instant, and secure method to convert from one cryptocurrency to another. To achieve this, a user specifies which currency they possess (deposit currency), and which currency they would like to obtain (withdrawal currency), as well as a wallet address for the currency they would like to obtain.

The Faast API then generates a unique deposit wallet address for the “deposit currency”, where the user can send any arbitrary amount of cryptocurrency. Upon noticing any transaction on this deposit address Faast will immediately fullfill an order at the current market rate, and send an equivalent amount of “withdrawal currency” to the users specified “wallet address”.

Faast never takes custody of users cryptocurrency, and has no user account system. It is designed for instant, safe, and secure conversion in between any arbitrary set of cryptocurrencies.

Basic flow ¶

1. Get a current price (varies in real time with market)

2. Generate a swap and deposit address

3. Send cryptocurrency to the deposit address

4. Monitor the status for completion

Fixed pricing vs Variable Pricing ¶

Faast provides two forms of pricing: fixed and variable. When using fixed pricing, an order is created expecting a specific deposit amount in return for a specific withdrawal amount. When using variable pricing, any arbitrary amount can be deposited, and an equivalent withdrawal amount will be calculated using the prevailing exchange rate at the time the deposit is received. This model provides optimal user experience, as well as developer flexibility.

Fixed Pricing ¶

The Faast API is inherently asynchronous. There will always be a time lag in-between the time that a swap is created, and a deposit is sent for that specific swap. Given the volatility of cryptocurrency markets, even these short delays can cause pricing discrepancies, and as a result, poor user experience.

For this reason, Faast provides a “fixed pricing” option when creating a swap. Faast will guarantee the price quoted back in the response assuming the deposit is received before the expiry period. To provide the best experience with fixed pricing, timing is paramount.

How to create a fixed price swap ¶

When calling the /swap endpoint, ensure a deposit_amount is specified, and the generated swap will return a price based on the market depth at the time of the request. The response will contain a price and price_locked_until parameters.

A deposit from the customer must be received before price_locked_until, and match the deposit_amount expected to ensure the price will honored. In the off chance that signing a transaction takes longer than expected, the /swaps/refresh endpoint can be called to refresh the price and re-quote based on an updated market rate.

All transactions are considered “received” when they are detected by a blockchain node on the Faast network. Transactions do not need to be “confirmed” or in a “block” to be considered “received”.

Variable Pricing ¶

Variable pricing allows for more flexibility, in that users can deposit any amount and receive an equivalent payout based on the prevailing rate at the time the deposit is received.

Given that the API does not know the exact deposit amount, it is impossible to accurately estimate the price of the swap beforehand (due to market depth issues on most cryptocurrencies). For this reason, the specific price of the swap will be quoted when a deposit is received by one of the blockchain nodes on the Faast network.

To create a variable price swap, simply omit the deposit_amount when calling the /swap endpoint.

Minimums and Maximums ¶

Minimum and maximum deposit amounts are returned in the pricing APIs. Cryptocurrency sent to the deposit address cannot be processed if it is below the minimum. Deposits that exceed the maximum value may be processed or refunded depending on various factors.

Affiliate Program ¶

Question: Why should I integrate with the Faast API and not XYZ API?

Answer: Faast provides the best opportunity for revenue generation as an API integrator.

Earn revenue today by integrating the Faast swap API into your product or service! No sign up is required, and payouts are instant!

Faast allows API integrators to quickly and easily earn revenue by setting a specific percentage of each swap they would like to earn as a commission. Contrary to competitive implementations, the Faast affiliate program allows the developer to choose the exact commission they would like to earn.

Withdrawals of earnings can be initiated via the API or via the Faast Affiliate Portal.

How it works: ¶

When generating a swap on behalf of a customer, simply add the affiliate_margin and affiliate_id fields to the request API.

Then, when the customer deposits funds for the swap, the following will happen:

1. The price the customer is quoted will be adjusted down by affiliate_margin
2. An equivalent amount of Bitcoin (deposit_amount * affiliate_margin) will be withheld for an affiliate payout
3. The customer will receive their withdrawal_currency payout
4. After the total affiliate payout for a specific affiliate_id reaches 0.01BTC, it can be withdrawn via an API request or via the aforementioned portal.

Affiliate margin ¶

The affiliate margin is a percentage (from 0.01 to 5) an affiliate would like to charge its customers. Faast prices its swaps based on the prevailing rates on the market, plus an approximate 1.0% fee. Affiliate margins are applied on-top of Faast’s native fee.

It is suggested that affiliates make clear to their users the affiliate margin being applied to a swap. The recommended margin is 0.5%, but affiliates are welcome to vary this rate based on business opportunities and application.

Geographic Restrictions ¶

The Faast API provides services to properly restrict certain functions based on a customers location, similar to the faa.st website. There are effectively three classes of customers.

1. Blocked customers - These customers should not be permitted to access any Faast service.

2. Restricted customers - These customers should not be permitted to access tokens listed as “restricted”.

3. Unrestricted customers - These customers can access all Faast services

Faast provides two API’s to assist with geo-restriction. The first API performs a lookup to identify if a customer is blocked/restricted. The second API classifies if assets are restricted or not.

Geo restrict implementation guidelines ¶

API Integrators who offer Faast services to end customers should follow these steps to ensure compliance with the Faast terms and conditions:

1. Query the customers restrictions using the geoIP endpoint

2. If blocked: true deny this customer all services

3. If restricted: true deny customers access to tokens listed as restricted: true in the asset list

Alternatively, the end customer’s IP address may be provided as user_ip_address during swap creation. When this field is provided, georestriction will be determined using that address.

If you have any questions at all about these requirements, feel free to reach out to [email protected] for clarification.

Integration Testing ¶

Faast provides a staging server that can be used for integration testing. It provides the same API, but with the following differences:

• It uses the TestNet bitcoin and ethereum (ropsten) test network, and thus expects testnet addresses and coins (eg. mqdofsXHpePPGBFXuwwypAqCcXi48Xhb2f)

• ERC20 Tokens are all a single custom Faast Token on ropsten address: 0xe72bbed5cf09686c62ed5be8f571a7670c11c468

• testnet coins may or may not be sent to the testnet address provided, depending on how our staging servers are configured

The testing base url is https://testapi.faa.st

Authentication ¶

The majority of the Faast APIs have no authentication requirement. The /affiliate APIs are the exception to this, for privacy reasons. Authentication is accomplished through the use of a shared affiliate ID and secret, used to sign requests. An affiliate ID and secret can be obtained through the /affiliate/register API.

Each request must provide the following headers:

• affiliate-id - affiliate ID provided by you

• nonce - an integer value appended to the body when generating the HMAC

• signature - output of the HMAC algorithm

Node.js example:

const requestData = {...}
const requestJSON = JSON.stringify(requestData)
const nonce = String(Date.now())
const signature = crypto
  .createHmac('sha256', 'secret')
  .update(nonce + requestJSON)
  .digest('hex')

request.post({
  url: 'https://testapi.faa.st',
  headers: {
    'affiliate-id': AFFILIATE_ID,
    nonce: nonce,
    signature: signature
  },
  json: requestData
}, function(err, res, body) { ... }

Base URL ¶

Production ¶

The production base URL is https://api.faa.st

Test ¶

The test base URL is https://testapi.faa.st

Swap Requests ¶

Swap statuses ¶

1. awaiting deposit - initial state after a swap has been created

2. awaiting network confirmation - waiting for confirmations of the deposit

3. received - deposit has been processed

4. withdrawing - withdrawal is being sent

5. complete - swap has completed

6. cancelled - no deposit was found

7. refunding - deposit will be refunded to the supplied refund address

8. refunded - deposit was refunded to the supplied refund address

The normal flow for a swap is through the first five statuses in that order. A swap may be cancelled if no valid deposit is seen after a reasonable time period, but note that if a deposit does arrive at the address later on, it will be re-priced and processed.

Content-Type: application/json

{
  "user_id": "my_user_id_992", (optional, user provided ID to be used for historical order lookups)
  "user_ip_address": "67.195.197.23", (optional, IP address of end-user for georestriction purposes)
  "deposit_amount": 0.02, (optional, specify amount for a fixed price swap)
  "deposit_currency": "ETH",
  "withdrawal_address": "0xf9357f4fdef81103ed55296649a7cacf04e80ef3",
  "withdrawal_address_extra_id": "11", (only required for certain currencies)
  "withdrawal_amount": 50, (optional, specify amount for a fixed price swap)
  "deposit_currency": "ETH",
  "withdrawal_currency": "BAT",
  "refund_address": "0xf9357f4fdef81103ed55296649a7cacf04e80ef3", (optional, address to send a refund if there are any issues)
  "refund_address_extra_id": "14", (only required for certain currencies)
  "affiliate_margin": 5, (optional, percentage fee, decimal from 0.0 to 5.0)
  "affiliate_fixed_fee": 1, (optional, fixed USD amount (eg $1), decimal from 0.0 to 5.0)
  "affiliate_id": "my_affiliate_id", (optional, registered affiliate ID)
  "price_quote_id": "1595965456677", (optional, ID of a quoted price returned from the pricing APIs)
}

Content-Type: application/json; charset=utf-8

{
  "swap_id": "30711734-e4ee-4ff1-a45b-4020cef8488b",
  "user_id": "my_user_id_992",
  "created_at": "2018-08-17T18:08:59.004Z",
  "deposit_address": "0x94fa1b52E7B6282dad0213e17A8BF7B2538b4b1E",
  "deposit_address_extra_id": "10",
  "deposit_amount": 0.02,
  "deposit_currency": "ETH",
  "spot_price": 0.03399216,
  "price": 0.035870226,
  "price_locked_at": "2018-08-17T18:08:58.829Z",
  "price_locked_until": "2018-08-17T18:23:58.829Z",
  "price_quote_id": "1595965456677",
  "withdrawal_amount": 0.557565486,
  "withdrawal_address": "0x3d6Bb40C0dDe451812A935163cC57974063b8dA3",
  "withdrawal_address_extra_id": "11",
  "withdrawal_currency": "BNB"
}

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
  "swap_id": "3f1c1a39-de8f-457d-ae2f-11383acd9403",
  "created_at": "2018-08-16T20:04:48.950Z",
  "updated_at": "2018-08-17T22:14:54.620Z",
  "user_id": "my_user_id_992",
  "deposit_address": "0x94fa1b52E7B6282dad0213e17A8BF7B2538b4b1E",
  "deposit_address_extra_id": "10",
  "deposit_amount": 0.02,
  "deposit_currency": "ETH",
  "spot_price": 0.03375493,
  "price": 0.03731607000000001,
  "price_locked_at": "2018-08-17T22:14:54.619Z",
  "price_locked_until": "2018-08-17T22:29:54.619Z",
  "withdrawal_address": "0x3d6Bb40C0dDe451812A935163cC57974063b8dA3",
  "withdrawal_address_extra_id": "11",
  "withdrawal_amount": 0.53596212,
  "withdrawal_currency": "BNB",
  "refund_address": null,
  "status": "awaiting deposit"
}

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
  "swap_id": "3f1c1a39-de8f-457d-ae2f-11383acd9403",
  "created_at": "2018-08-16T20:04:48.950Z",
  "updated_at": "2018-08-17T22:14:54.620Z",
  "user_id": "my_user_id_992",
  "deposit_address": "0x94fa1b52E7B6282dad0213e17A8BF7B2538b4b1E",
  "deposit_address_extra_id": "10",
  "deposit_amount": 0.02,
  "deposit_currency": "ETH",
  "spot_price": 0.03375493,
  "price": 0.03731607000000001,
  "price_locked_at": "2018-08-17T22:14:54.619Z",
  "price_locked_until": "2018-08-17T22:29:54.619Z",
  "withdrawal_address": "0x3d6Bb40C0dDe451812A935163cC57974063b8dA3",
  "withdrawal_address_extra_id": "11",
  "withdrawal_amount": 0.53596212,
  "withdrawal_currency": "BNB",
  "refund_address": null,
  "status": "awaiting deposit"
}

Content-Type: application/json

{
  "tx_id": "0xasdf..."
}

Content-Type: application/json; charset=utf-8

{
  "swap_id": "3f1c1a39-de8f-457d-ae2f-11383acd9403",
  "created_at": "2018-08-16T20:04:48.950Z",
  "updated_at": "2018-08-17T22:14:54.620Z",
  "user_id": "my_user_id_992",
  "deposit_address": "0x94fa1b52E7B6282dad0213e17A8BF7B2538b4b1E",
  "deposit_address_extra_id": "10",
  "deposit_tx_id": "0xasdf...",
  "deposit_amount": 0.02,
  "deposit_currency": "ETH",
  "spot_price": 0.03375493,
  "price": 0.03731607000000001,
  "price_locked_at": "2018-08-17T22:14:54.619Z",
  "price_locked_until": "2018-08-17T22:29:54.619Z",
  "withdrawal_address": "0x3d6Bb40C0dDe451812A935163cC57974063b8dA3",
  "withdrawal_address_extra_id": "11",
  "withdrawal_amount": 0.53596212,
  "withdrawal_currency": "BNB",
  "refund_address": null,
  "status": "awaiting deposit"
}

Query Requests ¶

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
  "pair": "BTC_ETH",
  "price": 0.01754196,
  "deposit_amount": 0.35,
  "withdrawal_fee": 0.00558457, // Faast fixed fee + affiliate fixed fee, in withdrawal_currency
  "minimum_deposit": 0.00063935,
  "maximum_deposit": 0.96873316,
  "minimum_withdrawal": 0.03645336,
  "maximum_withdrawal": 55.8476398,
  "terms": "https://faa.st/terms"
}

Content-Type: application/json

Content-Type: application/json; charset=utf-8

[
  {
    "name": "Bitcoin",
    "symbol": "BTC",
    "walletUrl": "https://copay.io",
    "deposit": true,
    "receive": true,
    "infoUrl": "https://bitcoin.org",
    "decimals": 8,
    "cmcID": "bitcoin",
    "iconUrl": "https://api.faa.st/api/v1/public/static/img/coins/icon_BTC.png",
    "restricted": false - If this currency is restricted
  },
  {
    "name": "Ethereum",
    "symbol": "ETH",
    "walletUrl": "https://faa.st",
    "deposit": true,
    "receive": true,
    "infoUrl": "https://ethereum.org",
    "decimals": 18,
    "cmcID": "ethereum",
    "iconUrl": "https://api.faa.st/api/v1/public/static/img/coins/icon_ETH.png",
    "restricted": false - If this currency is restricted
  },
  {
    "name": "Augur",
    "validate": "ETH",
    "symbol": "REP",
    "walletUrl": "https://faa.st",
    "deposit": true,
    "receive": true,
    "ERC20": true,
    "infoUrl": "https://etherscan.io/token/0x1985365e9f78359a9B6AD760e32412f4a445E862",
    "contractAddress": "0x1985365e9f78359a9B6AD760e32412f4a445E862",
    "decimals": 18,
    "cmcID": "augur",
    "iconUrl": "https://api.faa.st/api/v1/public/static/img/coins/icon_REP.png",
    "restricted": false - If this currency is restricted
  }, ...
]

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
  "name": "Bitcoin",
  "symbol": "BTC",
  "walletUrl": "https://copay.io",
  "deposit": true,
  "receive": true,
  "infoUrl": "https://bitcoin.org",
  "decimals": 8,
  "cmcID": "bitcoin",
  "iconUrl": "https://api.faa.st/api/v1/public/static/img/coins/icon_BTC.png"
  "restricted": false - If this currency is restricted
}

Content-Type: application/json

Content-Type: application/json; charset=utf-8

note: standard dict format response (no usd_depths)

{
  "minimum_deposits": {
    "BAT": 18.67064974,
    "BTC": 0.00040536,
    "ETH": 0.01457336,
    "TUSD": 3.30425588,
    "ZRX": 4.60574797
  },
  "maximum_deposits": {
    "BAT": 701821,
    "BTC": 100,
    "ETH": 1421,
    "TUSD": 80881,
    "ZRX": 132395
  },
  "maximum_withdrawals": {
    "BAT": 225742,
    "BTC": 100,
    "ETH": 1792,
    "TUSD": 82944,
    "ZRX": 58200
  },
  "withdrawal_fees": {
    "BAT": 0,
    "BTC": 0,
    "ETH": 0,
    "TUSD": 0,
    "ZRX": 0
  },
  "prices": {
    "BAT": {
      "BTC": 37528.00597461,
      "ETH": 1288.22461165,
      "TUSD": 5.71288835,
      "ZRX": 4.10593914
    },
    "BTC": {
      "BAT": 0.000027,
      "ETH": 0.03449866,
      "TUSD": 0.00015299,
      "ZRX": 0.00010996
    },
    "ETH": {
      "BAT": 0.00078709,
      "BTC": 29.29245176,
      "ETH": 13018.36041509,
      "TUSD": 57.73250944,
      "ZRX": 41.49322641
    },
    "TUSD": {
      "BAT": 0.17845856,
      "BTC": 6641.55432197,
      "ETH": 227.98476804,
      "ZRX": 0.72665246
    },
    "ZRX": {
      "BAT": 0.24875046,
      "BTC": 9257.55342667,
      "ETH": 317.78422163,
      "TUSD": 1.40927736
    }
  }
}

Content-Type: application/json; charset=utf-8

note: usd_depths=5000,10000

{
  "minimum_deposits": {
    "BTC": 0.00040536,
    "ETH": 0.01457336,
    "TUSD": 3.30425588
  },
  "maximum_deposits": {
    "BTC": 100,
    "ETH": 1421,
    "TUSD": 80881
  },
  "maximum_withdrawals": {
    "BTC": 100,
    "ETH": 1792,
    "TUSD": 82944
  },
  "prices": {
    "BTC": {
      "ETH": {
        "5000": 0.03098423,
        "10000": 0.03101745
      },
      "TUSD": {
        "5000": 0.00012096,
        "10000": 0.00012143
      }
    },
    "ETH": {
      "BTC": {
        "5000": 32.71543652,
        "10000": 32.72608979
      },
      "TUSD": {
        "5000": 0.0039337,
        "10000": 0.00395037
      }
    },
    "TUSD": {
      "BTC": {
        "5000": 8423.34421837,
        "10000": 8424.75504565
      },
      "ETH": {
        "5000": 259.43420062,
        "10000": 259.75592296
      }
    }
  }
}

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
  "total": 1,
  "orders": [
    {
      "swap_id": "ab0d3433-723a-4b6e-8c1c-a487103c1eb1",
      "user_id": "my_user_id_992",
      "created_at": "2018-08-17T16:25:47.659Z",
      "updated_at": "2018-08-17T17:01:14.130Z",
      "deposit_address": "0x94fa1b52E7B6282dad0213e17A8BF7B2538b4b1E",
      "deposit_address_extra_id": "10",
      "deposit_amount": 0.02,
      "deposit_currency": "ETH",
      "spot_price": 0.03435726,
      "price": 0.037981955000000005,
      "price_locked_at": "2018-08-17T16:25:47.650Z",
      "price_locked_until": "2018-08-17T16:40:47.650Z",
      "withdrawal_address": "0x3d6Bb40C0dDe451812A935163cC57974063b8dA3",
      "withdrawal_address_extra_id": "11",
      "withdrawal_currency": "BNB",
      "withdrawal_amount": 1.16252102,
      "status": "complete",
      "amount_deposited": 0.04,
      "amount_withdrawn": 1.16252102,
      "transaction_id": "0x849cfa8edde231c50cab8a4a3a2a1c8530797c870ef28b189cd5b58d63eb2ac2"
    }
  ]
}

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
  "ip": "196.52.2.25", - IP address that was queried
  "blocked": true, - If the customer is blocked from all Faast services
  "restricted": true, - If the customer is restricted
  "country": "US",
  "location_details": {}, - Unstructured data on the customers location
  "terms": "https://faa.st/terms"
}

Content-Type: application/json

{
  "address": "0xc1269f68df40098595292d78eb21ac86af71c60b",
  "currency": "BAT"
}

Content-Type: application/json; charset=utf-8

{
  "address": "0xc1269f68df40098595292d78eb21ac86af71c60b",
  "currency": "BAT",
  "valid": true,
  "acceptable": true,
  "blockchain": "ETH",
  "standardized": "0xC1269F68dF40098595292d78EB21ac86Af71C60b",
  "terms": "https://faa.st/terms"
}

Affiliate ¶

Content-Type: application/json

{
  "affiliate_id": "my_affiliate_id", (user provided ID)
  "contact_email": "[email protected]" (email address for support outreach)
}

Content-Type: application/json; charset=utf-8

{
  "affiliate_id": "my_affiliate_id",
  "secret": "2f03aa6c02061447560b9880bc4924ea2435",
  "contact_email": "[email protected]"
}

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
  "date": "2018-10-23T16:03:46.743Z",
  "address": "mqdofsXHpePPGBFXuwwypAqCcXi48Xhb2f",
  "totals": {
    "swaps_created": 34,
    "swaps_completed": 16,
    "value_usd": 0,
    "value_btc": 0,
    "affiliate_payouts_usd": 0,
    "affiliate_payouts_btc": 0,
    "by_currency": {
      "BNB": {
        "swaps_completed": 8,
        "value_currency": 0,
        "value_usd": 0,
        "value_btc": 0,
        "affiliate_payouts_usd": 0,
        "affiliate_payouts_btc": 0,
        "deposits": {
          "swaps_completed": 4,
          "value_currency": 0,
          "value_usd": 0,
          "value_btc": 0,
          "affiliate_payouts_usd": 0,
          "affiliate_payouts_btc": 0
        },
        "withdrawals": {
          "swaps_completed": 4,
          "value_currency": 0,
          "value_usd": 0,
          "value_btc": 0,
          "affiliate_payouts_usd": 0,
          "affiliate_payouts_btc": 0
        }
      },
      "ETH": {
        "swaps_completed": 8,
        "value_currency": 0,
        "value_usd": 0,
        "value_btc": 0,
        "affiliate_payouts_usd": 0,
        "affiliate_payouts_btc": 0,
        "deposits": {
          "swaps_completed": 4,
          "value_currency": 0,
          "value_usd": 0,
          "value_btc": 0,
          "affiliate_payouts_usd": 0,
          "affiliate_payouts_btc": 0
        },
        "withdrawals": {
          "swaps_completed": 4,
          "value_currency": 0,
          "value_usd": 0,
          "value_btc": 0,
          "affiliate_payouts_usd": 0,
          "affiliate_payouts_btc": 0
        }
      }
    }
  },
  "terms": "https://faa.st/terms"
}

Content-Type: application/json

{
  "withdrawal_address": "mqdofsXHpePPGBFXuwwypAqCcXi48Xhb2f", (Bitcoin address for payment)
}

Content-Type: application/json; charset=utf-8

{
  "status": "pending",
}

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
   page: 1,
   limit: 1,
   total: 18,
   withdrawals: [
     {
      created_at: '2019-01-07T12:14:23.782Z',
      updated_at: '2019-01-07T12:38:43.510Z',
      affiliate_id: 'my_affiliate_id',
      withdrawal_id: 'cd897515-79d5-4fcb-89ec-5fe4b58adc53',
      withdrawal_address: '1MsIASoHjqynMaMnP7SCmanyEWiLsTqoU5',
      withdrawal_amount: 1.02709828,
      withdrawal_currency: 'BTC',
      status: 'complete',
      transaction_id: '85958bc208952017e01529c91a6701eb01fb515d3f5799f814f061dbb0114bf6'
    }
}

"swap_id"
"order_id"
"user_id"
"created_at"
"updated_at"
"processed_at"
"deposit_tx_id"
"deposit_address"
"deposit_address_extra_id"
"deposit_amount"
"deposit_currency"
"spot_price"
"price"
"price_locked_at"
"price_locked_until"
"withdrawal_address"
"withdrawal_address_extra_id"
"withdrawal_amount"
"withdrawal_currency"
"refund_address"
"value_btc"
"value_usd"
"affiliate_payment_amount_dc"
"affiliate_payment_amount_fiat"

Content-Type: application/json

Content-Type: application/json; charset=utf-8

{
  "url": "https://api.faa.st/api/v2/public/affiliate/export/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "terms": "https://faa.st/terms"
}

History ¶

Version 0.1: ¶

• Add currently supported APIs

• GET rate

• GET txStat

• POST shift

• Add initial list of supported Deposit and withdrawal Currencies

Version 0.2: ¶

• Removed list of supported currencies from doc, use v1 currencies API to get currency list

• Removed /shift

• Removed /txStat

• Add initial v2 APIs

• GET price

• GET swaps

• POST swap

• POST swap/refresh

Version 0.2.1: ¶

• Fixed lack of URI parameter in refresh API

Version 0.3.0: ¶

• added GET swap

Version 0.4.0: ¶

• added GET /affiliate/:address/payouts

Version 0.5.0: ¶

• added GET /price/all

• added GET /affiliate/:address/stats

• fixed affiliate payouts documentation to include cursor

Version 0.6.0: ¶

• added POST /swap/deposit

Version 0.7.0: ¶

• /affiliate/stats and /affiliate/payouts now require authentication

• added POST /affiliate/register for obtaining api keys

Version 0.8.0: ¶

• /affiliate/stats response format has changed

• /affiliate/stats can be restricted by start/end date

Version 0.9.0: ¶

• /swap: added new fresh_deposit_address parameter

• added description of swap status values

Version 0.10.0: ¶

• removed affiliate_payment_address and affiliate_margin from swap responses

Version 0.11.0: ¶

• added maximum_deposits and maximum_withdrawals to price/all API

Version 0.12.0: ¶

• added USD depth to price/all for market depth pricing

• added affiliate margin to price/all for pricing results that include it

• added ability to provide withdrawal amount when creating a swap

• added ability to provide deposit amount, withdrawal amount, and affiliate margin when fetching a price

• indicate withdrawal amount is returned in swap data when created with a deposit amount

Version 0.13.0: ¶

• Added Geo Restriction details

Version 0.14.0: ¶

• Affiliate API key is now called ‘Affiliate ID’ and field names have been adjusted to match

• /affiliate/withdraw added for requesting an affiliate payment withdrawal

• added maximum_deposit in response to /price

Version 0.14.1: ¶

• Fixed error in authentication documentation – nonce comes before body

Version 0.15.0: ¶

• Fixed error in order of status transitions in status section

• Documented affiliate CSV export endpoints

Version 0.15.1: ¶

• Added new “withdrawing” and “refunding” status descriptions

Version 0.16.0: ¶

• Added new “usd_depths” query parameter to all prices endpoint

• Added user_ip_address body parameter to swap creation endpoint

Version 0.17.0: ¶

• Added /address endpoint for address validation and standardization

• Numerous cleanups and clarifications

Version 0.17.1: ¶

• Added ‘acceptable’ to /address endpoint to indicate whether Faast will accept the address as-is

Version 0.18.0: ¶

• Added ‘withdrawal_address_extra_id’ to support withdrawing currencies which require an extra address identifier

• Added ‘deposit_address_extra_id’ to support depositing currencies which require an extra address identifier

Version 0.19.0: ¶

• Added affiliate fixed fee to pricing and swap creation endpoints

• Added withdrawal fee to pricing endpoints

• Added min and max withdrawal amounts to pricing endpoints

• Added refund address extra ID for currencies requiring it

Version 0.19.1: ¶

• Added docs for affiliate withdrawals endpoint

Version 0.19.2: ¶

• Added query swaps by deposit address and extra-id fields

Version 0.19.3: ¶

• Added query swaps by refund address and extra-id

• Fixed query swaps and affiliate export to indicate which fields are optional

Version 0.19.4: ¶

• Added query swaps by any address field

Version 0.20.0: ¶

• Removed GET /affiliate/:address/payouts

Version 0.20.1: ¶

• Added price_quote_id to swap creation payload