Calling any list method that returns multiple results, such as /customers, may require pagination: multiple calls to fetch all the results. Metronome provides two URL parameters on all list endpoints for this purpose:
  • limit customizes how many results are returned per page
  • next_page specifies the cursor to use as a starting point to fetch the next set of results
When a returned response contains a next_page value, more records exist than were returned. Include that next_page value in a subsequent query to fetch the next set of results. To fetch every result, repeat this process until next_page is null. 
GET /v1/customers?limit=10

{
  "data": [
    {
      "id": 1
    },
    {
      "id": 2
    },
    // ...
  ]
  // The next_page cursor that can be passed in the URL
  // to get the next set of results.
  "next_page": "0c34b75b47491b73db66d46737d9a87"
}
Given the above response, you can provide the next_page cursor with the next request. 
GET /v1/customers?limit=10&next_page=0c34b75b47491b73db66d46737d9a87

{
  "data": [
    {
      "id": 3
    }
  ],
  // If no next_page value is returned, this is the last page of results.
  "next_page": null
}
BEST PRACTICES FOR LIMITTo make a quick API call to inspect the response format, set limit=1. To load many results with as few API calls as possible, set limit=50. For performance reasons, limit is capped at 100.