Vapi helps developers build, test, and deploy voice agents at scale. We enable everything in between the raw models and production, including telephony, test suites, and real-time analytics.
Thanks for sharing the error message. To help you further, could you confirm whether the assistantIdassistantId you're using is copied directly from your Vapi dashboard and that your API key has access to that assistant?
If possible, please double-check both values for typos or mismatches. This will help narrow down if the issue is with the assistant ID itself or with key permissions.