chore: publish changelog for 2025-07-31

Author: quantstruct-canvas[bot]

fern/changelog/2025-07-31.mdx

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+---
+title: "2025-07-31"
+---
+
+# <Frame>
+# API Changelog — 2025-07-31
+</Frame>
+
+## <Card>
+## Major Additions
+</Card>
+
+### Provider Resource Management
+- **New ProviderResource API**: Introduces a unified schema for managing provider resources, including support for ElevenLabs pronunciation dictionaries. This enables seamless integration and management of third-party resources in your org.
+- **ProviderResourcePaginatedResponse**: Enables paginated listing of provider resources for efficient resource management.
+
+### Inworld Credential Support
+- **InworldCredential & CreateInworldCredentialDTO**: Adds support for managing Inworld authentication tokens, allowing secure and named credential storage for the Inworld provider.
+
+### Workflow Enhancements
+- **Workflows now support dynamic credentials**: The new `credentials` property in `Workflow` allows you to specify and override credentials for individual workflows. This supports fine-grained access control and easier credential rotation.
+- **Background Sound and Keypad Input**: Workflows and assistants now support `backgroundSound` (including custom audio URLs) and `keypadInputPlan`, enabling richer call experiences and interactive input handling.
+- **MonitorPlan**: Real-time monitoring options can now be configured for workflows, allowing for live listening and control of ongoing calls.
+
+### Speech & Transcription Improvements
+- **AzureSpeechTranscriber & FallbackAzureSpeechTranscriber**:
+  - New `segmentationStrategy` and `segmentationMaximumTimeMs` properties enable advanced phrase boundary detection and fine-tuned control over transcription segmentation.
+  - `segmentationSilenceTimeoutMs` lets you adjust how quickly phrases are finalized after silence.
+  - Enhanced fallback planning for robust voice provider failover.
+
+### Variable Extraction & Aliases
+- **VariableExtractionAlias & Plan**: You can now define variable aliases that are exposed as Liquid template variables during calls and stored in artifacts, supporting advanced data transformations and referencing.
+
+### Assistant Hooks & Actions
+- **Customer Speech Timeout Hooks**: New `CustomerSpeechTimeoutOptions` and `AssistantHookCustomerSpeechTimeout` schemas allow you to trigger custom actions or prompts when the customer is silent for a configurable period.
+- **ToolCallAssistantHookAction**: Enables dynamic tool invocation as part of assistant hooks for deeper workflow automation.
+
+## <Card>
+## Deprecations & Removals
+</Card>
+
+### Deprecated Properties
+- **Assistant/Workflow `messagePlan`**: The `messagePlan` property is now marked as deprecated. Please migrate to the new hooks and prompt-based messaging system.
+- **`backgroundDenoisingEnabled`**: Deprecated in favor of the more advanced `backgroundSpeechDenoisingPlan`.
+- **Recording and Video URLs**: Properties like `recordingUrl`, `videoRecordingUrl`, and `stereoRecordingUrl` in `Artifact` are now deprecated. Use the `recording` and `videoRecordingUrl` fields in the artifact plan instead.
+
+### Removed Endpoints and Tool Functions
+- **Tool Function Properties**: The `function` property has been removed from all tool schemas (e.g., BashTool, ApiRequestTool, etc.). Please update any client logic that referenced these fields.
+- **Legacy Support & Campaign Endpoints**: Several legacy support and campaign endpoints have been removed to streamline the API surface.
+
+## <Card>
+## Other Noteworthy Changes
+</Card>
+
+- **Pronunciation Dictionary Integration**: ElevenLabs voice schemas now support direct linking of pronunciation dictionaries, improving voice customization.
+- **Observability & Compliance**: Expanded options for real-time monitoring, compliance plans, and observability (Langfuse integration).
+- **Assistant and Workflow Schema Parity**: Many properties and plans are now available in both Assistant and Workflow schemas, reducing friction when porting logic between the two.
+
+<Check>**Action Required:** Review deprecation warnings and update your integrations to use new properties and plans. For full migration details, see the API reference and migration guides.</Check>