GET /api/{base}
Lista tags (base: hst, flg, itm, loc, ply)
GET /api/api_groups
Lista grupos disponibles
GET /api/api_library_list
Lista bibliotecas
GET /api/graph_hst
Relaciones del grafo
GET /api/tree_hst
Jerarquias
POST /api/rpc/api_children
{"parent_mrf": "xxx"}
POST /api/rpc/api_related
{"tag_mrf": "xxx"}