Thank you for the detailed report. To help diagnose why your custom GoHighLevel calendar availability tool isn't being called, could you please confirm:
Is your custom-named tool both added to your assistant in the Tools tab and referenced by its exact name in your assistant's system prompt?
This will help determine if the issue is with configuration or something else.
Sources:
- [GoHighLevel Tools for Calendar and Contact Management](
https://docs.vapi.ai/changelog/2025/5/13)
- [GoHighLevel Integration & Tool Configuration Guide](
https://docs.vapi.ai/tools/go-high-level)