[API-users] Help with GBIF API

Hello,

I'm development a tool for data quality and I'm using the GBIF API to validate scientific names. I want to know if you have a documentation about the JSON response. I have any questions: 1- What the possibles values to matchType attribute? 2- When the result is exact, always return a single dataset? And when the result isn't exact, the attribute "alternatives" return the datasets that better matche with the search term? 3- What kind of URL I should use when the name query has space and special caracteres, for example, ().,& ?

Thank you,