Any limitation for api results

Hi,

When i use the recent solution API and i'm seeing the API returns very minimal amount of results. For example, the API /solutions/recent returns 25 records by default and when we add the some filter criteria(?date_start=2018-10-18&date_end=2019-02-19&page_size=1000) and it returns only 100 records and not more than that. 

So i'm just checking with you all, any other configuration is available in studio? and how to get the exact  results using the API.