curl --request GET \
  --url https://openrouter.ai/api/v1/providers \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "datacenters": [
        "US",
        "IE"
      ],
      "headquarters": "US",
      "name": "OpenAI",
      "privacy_policy_url": "https://openai.com/privacy",
      "slug": "openai",
      "status_page_url": "https://status.openai.com",
      "terms_of_service_url": "https://openai.com/terms"
    }
  ]
}