### Structure ```json { "experimental": { "clash_api": { "external_controller": "127.0.0.1:9090", "external_ui": "folder", "secret": "" } } } ``` ### Clash API Fields !!! error "" Clash API is not included by default, see [Installation](/#installation). !!! note "" Traffic statistics and connection management will disable TCP splice in linux and reduce performance, use at your own risk. #### external_controller RESTful web API listening address. Disabled if empty. #### external_ui A relative path to the configuration directory or an absolute path to a directory in which you put some static web resource. sing-box will then serve it at `http://{{external-controller}}/ui`. #### secret Secret for the RESTful API (optional) Authenticate by spedifying HTTP header `Authorization: Bearer ${secret}` ALWAYS set a secret if RESTful API is listening on 0.0.0.0