Pagination

Each API request only returns a limited amount of records. To allow users to fetch large amounts of records some of our endpoints implement a system of pagination.

Paginated endpoints currently use cursor pagination. These endpoints will return a cursor next with each request response. To get the next set of records, the API user has to include the returned cursor on the following API request.

🚧

Default time range

Each endpoint includes a default time range which (for example 30 days for Get swaps by pool ). If you want to query data outside of default time range, you need to explicitely provide:

• A start and end date: start_date and end_date
• A time range days and either one of start_date or an end_date

For example:

To paginate further, a user can specify a start_date and an end_date as follows:
/api/swaps/pool/0x5777d92f208679db4b9778590fa3cab3ac9e2168?network=ethereum&start_date=2022-11-01&end_date=2022-12-01

For example, calling the Get recent swaps endpoint:

https://services.blockpour.com/api/swaps/recent

Will return the 50 most recent swaps ordered from the most recent to the oldest:

JSON

  "statusCode": 200,
  "status": true,
  "data": [
   ...., 
   {
      "time": "2022-12-07T07:28:27.000Z",
      "pair": "0x8072dcd2ec9d20b0cdacd1f596328711d906bfe7",
      "token0": "0x5187816a80a61b67b9879aea87ea0890a493396b",
      "token1": "0xc2132d05d31c914a87c6611c10748aeb04b58e8f",
      "amount0": -216.06966141020132,
      "amount1": 1.057698,
      "amount_usd": "1.05777203886",
      "slippage": 1.4386992810494261,
      "receiver": "0x11ab72cbb42e24310f269c48f9d8355e437e3f63",
      "tx": "0x36b50e1c23a6c7d3b803d2e43f9c5a615061272b17ddb3f2d6351a3370075cb4",
      "price0": 0.0048955139372938335,
      "price1": 1.00007,
      "network": 137,
      "token0_symbol": "CORIS",
      "token1_symbol": "USDT",
      "exchange": "0x5757371414417b8c6caad45baef941abc7d3ab32",
    }
  ],
  "next": "MTY3MDM5ODEwNywzOTEtMHgzNmI1MGUxYzIzYTZjN2QzYjgwM2QyZTQzZjljNWE2MTUwNjEyNzJiMTdkZGIzZjJkNjM1MWEzMzcwMDc1Y2I0"
}

The next set of recent swaps can be queried with:

https://services.blockpour.com/api/swaps/recent?next=MTY3MDM5ODEwNywzOTEtMHgzNmI1MGUxYzIzYTZjN2QzYjgwM2QyZTQzZjljNWE2MTUwNjEyNzJiMTdkZGIzZjJkNjM1MWEzMzcwMDc1Y2I0

This will return all swaps with a timestamp older than "2022-12-07T07:28:27.000Z"** (the oldest timestamp in the previous returned data).

Ordering

❗️

Ordering

Paginated endpoints only support cursors if the order is by time. If ordering by amountusd or amounts, it is recommended to use limits and start / end dates.

To get the largest 10 AAVE trades over the last 7 days by amountusd you can use the following query:

https://services.blockpour.com/api/swaps/token/AAVE?network=ethereum&sort=amount_usd&days=7&limit=10

To see more results, since there is no cursor, you can specify a larger limit to view more of the largest AAVE trades over 7 days. Alternatively, you can specify start_date and end_date with limits to control the number of largest trades for a token you want to fetch

Pagination Direction

By default or if you provide an end_date param, the data will paginate backwards meaning that each new response will return older records.

🚧

If you only provide a start_date, the API will paginate forward.

Example 1: ?start_date=2022-01-01&end_date=2022-01-02&limit=100 will return records from the most recent to the oldest. If there are more than 100 records, you can retrieve the next set of records by calling ?start_date=2022-01-01&end_date=2022-01-02&limit=100&next={next} where {next} is returned in the previous query result.

Example 2: ?start_date=2022-01-01&limit=100. There is no end_date so the API responses will be paginated forward. The API will return the records from the oldest (after 2022-01-01T00:00:00Z) to the most recent.

Code Example

JavaScript

const paginate = async () => {
  let done = false
  let next = ""
  let baseUrl = 'https://services.blockpour.com/'
  let endpoint = 'api/swaps'
  const body = JSON.stringify({ "traders": ["0x6977e753e022f65ebeb170d8267b2ea54a431523"] })
  const options = {
    method: 'POST',
    headers: {
      accept: 'application/json',
      'content-type': 'application/json',
      authorization: 'PUT TOKEN HERE'
  
    },
    body
  };

  let url = new URL(endpoint, baseUrl);
  let params = {
    start_date: '2023-03-01',
    end_date: '2023-03-10'
  }
  Object.keys(params).forEach(key => url.searchParams.append(key, params[key]));

  let data = [] 
  while (!done) {
    if (next) url.searchParams.append("next", next)
    let response = await fetch(url, options)
    let result = await response.json()  

    next = result.next
    if (result.data.length === 0) done = true
    data.push(...result.data)
  }

  return data
}