chore(changelog): add API changelog for 2025-07-31

Author: quantstruct-canvas[bot]

fern/changelog/2025-07-31.mdx

@@ -0,0 +1,66 @@
+---
+title: API Changelog for 2025-07-31
+---
+
+# Changelog: API Updates from 2025-07-25 to 2025-07-31
+
+<Frame>
+
+## Major Additions
+
+### Provider Resource Management
+- **ProviderResource**: New schema enables management and tracking of external provider resources, such as ElevenLabs Pronunciation Dictionaries, including metadata like creation time, resource type, and org association.
+- **ProviderResourcePaginatedResponse**: Added schema for paginated listing of provider resources, supporting efficient resource management at scale.
+
+### Inworld Credentials
+- **InworldCredential**: Securely store and reference Inworld Basic (Base64) authentication tokens, with clear org association and audit timestamps.
+- **CreateInworldCredentialDTO / UpdateInworldCredentialDTO**: New endpoints and schema for creating and updating Inworld credentials, supporting integration with Inworld voice technologies.
+
+### Enhanced Variable Extraction
+- **VariableExtractionAlias**: Introduce flexible aliasing for variables in workflow and assistant plans, allowing for advanced runtime variable mapping and transformation using LiquidJS syntax.
+- **VariableExtractionPlan.aliases**: Easily define derived variables, such as `customerName` or `greeting`, directly in your extraction plan.
+
+### Customer Speech Timeout Hooks
+- **AssistantHookCustomerSpeechTimeout** and **CustomerSpeechTimeoutOptions**: Fine-tune how your assistant responds to customer silence, including custom timeout durations, trigger limits, and reset modes for more responsive conversational flows.
+
+### ElevenLabs Pronunciation Dictionary Integration
+- **ElevenLabsPronunciationDictionary** and **ElevenLabsPronunciationDictionaryLocator**: Native support for managing and referencing ElevenLabs pronunciation dictionaries in voice plans, enabling improved speech accuracy and customization.
+
+### Workflow Enhancements
+- **Workflow.backgroundSound**: Configure background audio for workflows—choose between standard office sounds or custom audio URLs.
+- **Workflow.keypadInputPlan**: Plan and manage keypad input handling directly within workflow definitions.
+- **Workflow.credentials**: Workflows now support dynamic credentials, allowing secure and flexible API integrations on a per-workflow basis.
+
+## Improvements & Changes
+
+### Transcriber Segmentation Controls
+- **AzureSpeechTranscriber / FallbackAzureSpeechTranscriber**: Added `segmentationStrategy`, `segmentationMaximumTimeMs`, and `segmentationSilenceTimeoutMs` for granular control over phrase boundary detection and silence handling. This enables both time-based and semantic segmentation for improved transcription quality.
+
+### JsonSchema Enhancements
+- Added `title`, `format`, and `pattern` properties for richer schema definitions and validation capabilities.
+
+### NodeArtifact Variable Tracking
+- **NodeArtifact.variableValues**: Track extracted variables at the node level for better debugging and analysis of workflow execution.
+
+### Assistant and Workflow Background Sound
+- **backgroundSound**: Now available in both Assistant and Workflow schemas for consistent environmental audio configuration.
+
+## Deprecations & Removals
+
+### Message Plan and Background Denoising
+- **messagePlan** and **backgroundDenoisingEnabled**: These properties are now deprecated in favor of more flexible message and denoising plans. Please migrate to the new configuration options for future-proofing your integrations.
+
+### Tool Function Properties
+- The `function` property has been removed from most tool schemas (e.g., BashTool, DtmfTool, ApiRequestTool, etc.), reflecting a move toward a more unified tool invocation model.
+
+### Silence Timeout and Variable Properties
+- **silenceTimeoutSeconds**: Removed from Assistant and related schemas. Use the new customer speech timeout hooks for more advanced control.
+- **variables**: Removed from Artifact and NodeArtifact; use `variableValues` instead for a clearer, consolidated variable tracking experience.
+
+</Frame>
+
+<Card>
+  <Check /> **Upgrade Guidance:**
+  - Review any usage of deprecated properties and migrate to the new plans and hooks for full feature support.
+  - Explore new credential and resource management endpoints to take advantage of enhanced security and extensibility.
+</Card>