action: add_custom_field · update_routing_rule · update_default_routing_rule · add_office · update_office · update_company · add_agent · add_agent_tag · deactivate_agent · reactivate_agent
The one HTTP-verb inversion in the whole API:
PUT /v1.0/org/office creates an office, POST to the same path updates one — hidden behind add_office/update_office so you never need to know it.