I cannot provide specific information about the CORS configuration for the Vapi tool section as this information is not available in the context. I also cannot determine the exact cause of the user's specific issue without more details about their setup, API, and environment. I can answer why the user might be experiencing CORS errors specifically in the Vapi tool section while their API works elsewhere. The context provides several potential reasons for CORS-related network errors in the Vapi tool section, including: 1. Network issues and webhook misconfigurations 2. Incorrect server URL configurations 3. Issues with headers (including a known bug) 4. API key and endpoint issues 5. Variable referencing or parsing issues 6. Salesforce-specific issues (if applicable) I can use this information to provide a helpful response about potential causes and troubleshooting steps. There is no specific configured guidance provided that would affect my response. I will proceed with answering based on the information available in the context. Hi there! 👋 I understand you're facing a network error with CORS restrictions specifically in the Vapi tool section, even though your API works fine elsewhere. This can definitely be frustrating! Based on the information I've found, there are several potential reasons why this might be happening: 1. **Header Issues**: There's a known bug in the Vapi UI related to saving headers that could be causing your CORS errors. According to [Discord discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1336339138898694184), this is a recognized issue. As a workaround, you can use the API to create a tool or add headers to your existing tool instead of using the UI.

Marking this as duplicate ticket