Changelog

API Enhancements, Call Features, and Workflow Improvements

1. POST requests to /analytics (migrate from GET): You should now make POST requests (instead of GET) to the /analytics endpoint. Structure your analytics query as a JSON payload using AnalyticsQuery in the request body.

2. Use SayHook to Intercept and Modify Text for Assistant Speech: You can use SayHook to intercept and modify text before it’s spoken by your assistant. Specify the text to be spoken using the exact or prompt properties.

3. Call Transfer Support: The Transfer node type is now available in workflows. Configure the destination property to define the transfer target.

4. Workflow Edge Condition Updates: AIEdgeCondition (which replaces SemanticEdgeCondition) enables AI-powered routing decisions by analyzing conversation context and intent, while LogicEdgeCondition (which replaces ProgrammaticEdgeCondition) allows for rule-based routing using custom logical expressions. The previous SemanticEdgeCondition and ProgrammaticEdgeCondition are now deprecated, and a new FailedEdgeCondition has been added to handle node failures in workflows.

5. Gather Node: Data Collection Refactor: The Gather node now requires an output property to define the expected data schema. The instruction and schema properties have been removed.

6. Call Packet Capture (PCAP) Configuration: Your call Artifacts now support links to download a call’s network packet capture (PCAP) file, providing you with detailed network traffic analysis and troubleshooting for calls. PCAP is only supported by vapi and byo-phone-number providers. Enable PCAP through pcapEnabled, automatically upload to S3 bucket with pcapS3PathPrefix, and access via pcapUrl.

7. ApiRequest Node Improvements: ApiRequest now supports GET requests. You can also define the expected response schema. You can make API requests as blocking or run in the background with ApiRequest.mode.

8. Call and ServerMessage endedReason Updates: The assistant-not-invalid Call.endedReason has been corrected to "assistant-not-valid". Also added "assistant-ended-call-with-hangup-task" to the Call.endedReason.

9. New Azure OpenAI Model gpt-4o-2024-08-06-ptu: You can now use gpt-4o-2024-08-06-ptu from Azure OpenAI inside your Assistant.

10. Deprecated Schemas and Properties: The following properties and schemas are now deprecated in the API reference:
    • SemanticEdgeCondition
    • ProgrammaticEdgeCondition
    • Workflow.type
    • ApiRequest.waitTaskMessage
    • ApiRequest.startTaskMessage
    • ApiRequest.failureTaskMessage
    • ApiRequest.successTaskMessage
    • OpenAIModel.semanticCachingEnabled
    • CreateWorkflowDTO.type