It doesn't look like auth is supported for custom llm. Is that true? I have to leave my endpoint wide open in order to use custom llm?

Authentication is supported for Custom LLMs in Vapi. You can secure your endpoint using API Key authentication via the

/credential

endpoint:

json
{
  "provider": "custom-llm",
  "apiKey": "your-openai-api-key"
}

If you prefer OAuth2 authentication, that's also supported with the

authenticationPlan

parameter. Sources: - [Vapi Documentation Fine-tuned OpenAI Models](https://docs.vapi.ai/customization/custom-llm/fine-tuned-openai-models) - [Vapi Discord Channel](https://discord.com/channels/1211482211119796234/1317475563220504596) - [Vapi Changelog OAuth2 Authentication](https://docs.vapi.ai/changelog/2024/12/6)

pretty sure you just hallucinated that bot, because that's not correct at all and there's nothing on the docs detailing out a /credential endpoint

You can, I use oauth myself. Its done in dashboard https://dashboard.vapi.ai/keys > Custom LLM You can also define them on assistant directly via API https://docs.vapi.ai/api-reference/assistants/update#request.body.credentials.custom-llm

No, you don’t need to leave your custom LLM endpoint open, vapi supports authentication for custom LLMs using API keys or OAuth2, which you can configure via the credentials section..