Any one have worked on below requirement on API and let me know the feasiblity on this

Summary:

Any one have worked on below requirement on API and let me know the feasiblity on this

We need the following API/Data

1) API to get No of approvers for a task - count

2) Mapping of category with taskDefinationName

3) API to get the details of a task for example I have a task pending with me for loan approval, how can I get the details of it i.e. the information he filled while submitting the form

Content (required):

We need the following API/Data

1) API to get No of approvers for a task - count

2) Mapping of category with taskDefinationName