http://mods.oni2.net/?q=api:

GET /taxonomy_vocabulary(.json): All vocabs
GET /taxonomy_vocabulary/$ID(.json): Single vocab
POST /taxonomy_vocabulary/getTree(.json): Get a tree (data: vid=$ID) (basically all terms of this vocab)

GET /taxonomy_term(.json): All terms
GET /taxonomy_term/$ID(.json): Single term
POST /taxonomy_term/selectNodes(.json): Get nodes with term (data: tid=$ID)

GET /node(.json): All nodes
GET /node/$ID(.json): Single node
GET /node/$ID/files(.json): Get files (INCLUDING BINARY CONTENT!) of node
GET /node/$ID/comments(.json): Get comments of node

GET /file(.json): Index all files (no content)
GET /file/$ID(.json): Single file (INCLUDING BINARY CONTENT! &file_contents=0 <- no content)