Hi there! I understand your frustration with the tool call issues you're experiencing, especially with an important event planned today. I'm unable to diagnose exactly what's happening with your specific tool calls right now, but I can definitely help with information about common tool call issues and recent stability problems that have been reported. Based on the information I found, there have been several stability issues reported with Vapi's platform recently: ## Recent Stability Issues According to [user reports in Discord](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1334159219649417289), users have experienced: - 524 errors and failed calls - Concurrency limit issues and missing status reports/webhooks - Database outages with Supabase that temporarily affected Vapi - Issues with webhook inconsistencies where webhook calls sometimes don't send post requests - Problems with the

transferCall

tool not working as expected ## Common Tool Call Issues Here are some common reasons tool calls might not be working: 1. **Configuration Issues**: According to [troubleshooting information](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1334114042876264518), tools might not be automatically called due to configuration problems or the need for explicit user input. 2. **Response Format Problems**: The tool call response must be in the correct format with the

result

field as a single-line string without line breaks, as noted in [Discord discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1342188078437236916).

- [Discord discussion about async tool call issues](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1342336047589359618) - [Discord discussion about webhook issues](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1326809606671958080)