How to get app name for jss dictionary, for request /sitecore/api/jss/dictionary///. Neither throws 404 error if not using sc_apikey or Unknown app name?
The JSS app name is in the Sitecore config normally below the
\App_Config\Include\ in the Sitecore webroot.
You can found also found it with this url
if you are admin, you can search on
<apps> and found it below
See https://jss.sitecore.com/docs/fundamentals/services/app-configuration#app-configuration for the Sitecore JSS App configuration.
The url for the JSS dictionary looks like this:
Fill in your app name and apikey and language.
Note: in the app config you can also set the dictionaryPath.