Add changelog for 2025-06-04

[quantstruct-bot]

Description

Assistant Configuration Updates

1. Set Minimum Messages for Analysis: Skip analysis for very short conversations by setting Assistant.analysisPlan.minMessagesThreshold (default: 2).

2. Configure Transfer Timeout: You can now set the timeout for warm transfer modes with Assistant.hooks.do[type=transfer].destination.transferPlan.timeout (default: 60). Warm transfer modes allow for a smooth handoff between agents by maintaining context and conversation history during the transfer process.

   This timeout setting determines how long the system will wait for the transfer to complete before timing out.

3. Enable AssemblyAI Universal Streaming API: You can now enable the new Universal Streaming API for AssemblyAI transcribers with Assistant.transcriber.enableUniversalStreamingApi and Assistant.transcriber.fallbackPlan.transcribers.enableUniversalStreamingApi.

   Set this to `true` to use AssemblyAI's new Universal Streaming API for improved transcription.

**Removal of regex in JsonSchema**: You can no longer use regular expressions in your [JSON schema validations](https://api.vapi.ai/api#:~:text=JsonSchema).

Dot paths affected:

• assistant.analysisPlan.structuredDataPlan.schema.regex
• assistant.hooks.do[type=function].function.parameters.properties.regex
• assistant.model.tools[type=apiRequest].body.regex
• assistant.model.tools[type=apiRequest].headers.regex

Testing Steps

• Run the app locally using fern docs dev or navigate to preview deployment
• Ensure that the changed pages and code snippets work

[github-actions]

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