Configure custom LLM for posit assistant in R-studio

Hello,
I'm trying to configure posit assitstant in R-studio to work with A version of Claude we have on our azure foundry. I have seen this article: Config File — Posit Assistant

However, it is not entirely clear to me how to setup the settings file correctly for a azure foundry.
So far my settings.json file looks like this - but this doesn't make the LLM available in the Chat.

{
  "providers": {
    "anthropic": {
      "baseUrl": "https://xyz-xyzx-resource.services.ai.azure.com",
      "customHeaders": {
        "api-key": "myapikey"
      }
    }
  }
}

Would be great if someone can share an example settings file that works for them.
Thx

The current release of Posit Assistant for RStudio only supports the Posit AI subscription, but this will be changing very soon to support a bunch of "bring your own provider" options, along with the ability to configure your own via the config file.

Very soon being on the order of a week (or a few days).