NVIDIA NIM API returns 403 Authorization failed while /v1/models works

AI & Data Science NVIDIA NIM Access/Accounts
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Hello NVIDIA Support,

I am using NVIDIA NIM with a personal NVIDIA Developer account.

  • GET https://integrate.api.nvidia.com/v1/models returns HTTP 200.
  • POST https://integrate.api.nvidia.com/v1/chat/completions consistently returns HTTP 403:
    {"status":403,"title":"Forbidden","detail":"Authorization failed"}

I tested directly from Windows PowerShell, outside my application, using the model nvidia/nemotron-3.5-lightning-30b-a3b. I also created a new API key, but the issue persists.

Could you please check whether my account has the required authorization for hosted NIM inference / Public API Endpoints?

Thank you.