REST API methods are used to render the UI for new versions of Blockscout. These can be accessed and used to get many types of information. Methods parameters and schemas are available at https://instance-name/api-docs (ie https://eth.blockscout.com/api-docs)
Blockscout uses the keyset pagination method to quickly return results. By default an API response returns the first 50 results. To access additional results (in groups of 50), add the next_page_params to your query.