Can't use variableValues to make my system prompt dynamic. I can send dynamic system message though but still it's better to have assistantOverrides.

Currently, the

assistantOverrides

(including

variableValues

) feature is not available in the Chat APIs—it's only supported for phone calls. As a workaround, you can send a dynamic system message directly in your chat request to customize the prompt:

json
{
  "messages": [
    { "role": "system", "content": "Hello John! How can I help you today?" }
  ]
}

For now, this is the best way to inject dynamic content into your chat assistant's prompt. Sources: - [Vapi Dynamic Variables Documentation](https://docs.vapi.ai/assistants/dynamic-variables) - [Vapi Personalization Documentation](https://docs.vapi.ai/assistants/personalization)

You can’t use variableValues directly in the Vapi dashboard to make system prompts dynamic, but you can dynamically inject values at runtime using assistantOverrides.variableValues through the API or SDK..