The API provides two methods for managing your trustmap, which both require remote key authentication:

- add for trusting people
- remove for when you no longer trust people

And three main methods for querying it (which don't require authentication):

- get_trusted_users to see who someone trusts
- get_users to see who trusts someone
- get_contexts to see what one user trusts another for

Plus you can call:

- get_contexts_for_user to see what's in a user's trustmap
- get_users_for_context to see who trusts people for a tag

And finally:

- get_user to get a full set of data from a user's contextual identifier