Hi @vwegert,
OAuth Clients let you create and distribute software that lets your users log into their Particle accounts via your app. This can be especially useful if you have an organizational product, and you want your own branded app / customer accounts, etc. This is available now, and you can generate your own oauth clients. We’ve been extremely open, and haven’t strictly required official oauth client credentials, but it’s something that might become required (still easy to create a set of credentials), and it’s generally a good practice to use an oauth client setup / creds when building apps.
Thanks!
David