# April 1, 2026

### ElevenAgents

- **MCP tool scoping in agent workflows**: Agent workflow nodes can now restrict which MCP tools a sub-agent is permitted to call. When tool inheritance is disabled on a node, only the explicitly selected MCP tools are loaded for that sub-agent, giving teams precise control over tool access per workflow step.

- **Conversation file uploads**: The [create agent](https://elevenlabs.io/docs/api-reference/agents/create) and [update agent](https://elevenlabs.io/docs/api-reference/agents/update) endpoints now support a `file_input` field on `ConversationConfig`. When enabled, end users can attach images or PDFs in chat (requires an LLM with multimodal input support). Configurable with `enabled` (boolean) and `max_files_per_conversation` (integer).

- **Re-run conversation analysis**: New [run conversation analysis](https://elevenlabs.io/docs/api-reference/conversations/analysis/run-analysis) endpoint (`POST /v1/convai/conversations/{conversation_id}/analysis/run`) re-evaluates a completed conversation using the agent's current evaluation criteria and data collection settings, without needing a new call.

- **Tool response mocking for tests**: Agent simulation tests and test suite invocations now support a `tool_mock_config` field to control how tool calls are handled during testing. Use `MockingStrategy` (`all`, `selected`, `none`) to choose which tools are mocked and `MockNoMatchBehavior` (`call_real_tool`, `raise_error`) to set the fallback when no mock matches.

- **Text search sort order**: The [text search conversations](/guides/changelog-api-reference-conversations-messages-text-search) endpoint now accepts a `sort_by` query parameter with values `search_score` (default) or `created_at`, allowing you to control whether results are ordered by relevance or recency.

- **mTLS auth connections**: Agent auth connections now support mutual TLS (`mtls`) as an `auth_type`, in addition to the existing options. New `CreateMTLSAuthRequest` and `MTLSAuthResponse` schemas are available for creating and retrieving mTLS-authenticated connections.

- **Max duration message**: Added `max_conversation_duration_message` field to agent configuration. When set to a non-empty string, the agent will send this message to the user when the maximum conversation duration is reached.

- **Branch and environment in conversation initiation**: Added `branch_id` and `environment` optional fields to the conversation initiation client data (`ConversationInitiationClientDataRequest`) and [submit batch call](/guides/changelog-api-reference-batch-calling-create) request body, enabling routing to specific agent branches and environments.

### Music

- **Video to music**: New `POST /v1/music/video-to-music` endpoint generates background music from one or more video files. Videos are combined in sequence. Accepts optional `description` (up to 1,000 characters) and `tags` (up to 10 style tags such as `upbeat` or `cinematic`) to influence the generated track.

### Speech to Text

- **Transcribe from URL**: The [convert speech to text](/guides/changelog-api-reference-text-to-dialogue-convert) endpoint now accepts a `source_url` parameter (string, optional) for transcribing audio or video from a hosted URL, including YouTube videos, TikTok videos, and other video hosting services. This can be used as an alternative to uploading a file directly.

### Voices

- **Total count in shared voices list**: The [list shared voices](/guides/changelog-api-reference-voices-voice-library-get-shared) response now includes a `total_count` field, making it easier to implement pagination and display result counts.

### SDK Releases

#### JavaScript SDK

- [v2.41.0](https://github.com/elevenlabs/elevenlabs-js/releases/tag/v2.41.0) - Added support for the `multimodal_message` WebSocket event type in ElevenAgents real-time conversations. Includes Fern regeneration for the latest API schema updates.
- [v2.41.1](https://github.com/elevenlabs/elevenlabs-js/releases/tag/v2.41.1) - Fern regeneration to match the April 1, 2026 API schema.

#### Python SDK

- [v2.41.0](https://github.com/elevenlabs/elevenlabs-python/releases/tag/v2.41.0) - Fixed `audio_interface` to be optional in text-only conversation mode, resolving a runtime error when starting a session without audio. Includes Fern regeneration for the latest API schema.

#### Packages

This release includes the new v1.0.0 of the client side Agent SDKs. It features major breaking changes to `@elevenlabs/client`, `@elevenlabs/react`, and `@elevenlabs/react-native`. Review the migration guidance below before upgrading.

To help upgrade, we released a Skill to help your agents upgrade for you. Install it with

```
npx skills add elevenlabs/packages
```

You can read more about the v1 release and its improvements on our [developer blog](https://elevenlabs.io/blog/elevenagents-react-sdk-v1-0).

- [@elevenlabs/client@1.0.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/client@1.0.0) — **Breaking changes:**

  - `Input` and `Output` classes are no longer exported. Use the `InputController` and `OutputController` interfaces from `@elevenlabs/client` instead.
  - `Conversation` is no longer a class — it is now a namespace object and a type alias for `TextConversation | VoiceConversation`. Remove any `instanceof Conversation` checks and subclasses.
  - The default `connectionType` is now inferred from the conversation mode: voice conversations use `"webrtc"` by default, and text-only conversations use `"websocket"`. To keep the previous behavior for voice, pass `connectionType: "websocket"` explicitly.
  - `VoiceConversation.wakeLock` is now private. Pass `useWakeLock: false` in session options to suppress wake lock management.
  - `changeInputDevice()` and `changeOutputDevice()` now return `Promise<void>` instead of `Promise<Input>` or `Promise<Output>`.
  - Replace `conversation.input.analyser.getByteFrequencyData(data)` with `conversation.getInputByteFrequencyData()`.
  - Replace `conversation.input.setMuted(v)` with `conversation.setMicMuted(v)`.
  - Replace `conversation.output.gain.gain.value = v` with `conversation.setVolume({ volume: v })`.
  - `getInputVolume()`, `getOutputVolume()`, `getInputByteFrequencyData()`, and `getOutputByteFrequencyData()` now return `0` or an empty `Uint8Array` instead of throwing when no conversation is active.

- [@elevenlabs/react@1.0.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/react@1.0.0) — **Breaking changes:**

  - `useConversation` now requires a `ConversationProvider` ancestor. Wrap your component tree in `<ConversationProvider>` and move options to the provider or to the hook.
  - `DeviceFormatConfig` and `DeviceInputConfig` exports are removed. Use `FormatConfig` and `InputDeviceConfig` from `@elevenlabs/client` instead.
  - New granular hooks replace the monolithic `useConversation` for better render performance: `useConversationControls()`, `useConversationStatus()`, `useConversationInput()`, `useConversationMode()`, `useConversationFeedback()`, and `useRawConversation()`. Each hook subscribes only to the state it needs, preventing unnecessary re-renders.
  - New `useConversationClientTool(name, handler)` hook for registering client tools that agents can invoke, with automatic cleanup on unmount.
  - Added controlled mute support via `isMuted` and `onMutedChange` props on `ConversationProvider`.

- [@elevenlabs/react-native@1.0.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/react-native@1.0.0) — **Breaking changes:**

  - The previous `ElevenLabsProvider` and `useConversation` API have been removed and replaced with re-exports from `@elevenlabs/react`. Replace `ElevenLabsProvider` with `ConversationProvider` and `useConversation` with the granular hooks (`useConversationControls`, `useConversationStatus`, etc.).
  - On React Native, the package now polyfills WebRTC globals, configures the native `AudioSession`, and registers a platform-specific voice session strategy on import.

- [@elevenlabs/types@0.8.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/types@0.8.0) - Exports the `CALLBACK_KEYS` runtime array containing all keys from the `Callbacks` interface, used internally by the React SDK for callback composition.

- [@elevenlabs/client@0.16.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/client@0.16.0) - Added the `guardrail_triggered` server-to-client WebSocket event and the `onGuardrailTriggered` callback, which fires when the server detects a guardrail violation during a conversation. Also added type discriminants to `TextConversation` and `VoiceConversation` to enable discriminated union narrowing, and added `startSession` overloads that narrow the return type based on the `textOnly` option.

- [@elevenlabs/react-native@0.6.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/react-native@0.6.0) - Added the `guardrail_triggered` WebSocket event and `onGuardrailTriggered` callback, consistent with `@elevenlabs/client@0.16.0`.

- [@elevenlabs/client@1.1.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/client@1.1.0) - Added client-side support for mocking tool responses in agent conversations, enabling test scenarios that simulate tool call outcomes without invoking real tools.

- [@elevenlabs/types@0.9.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/types@0.9.0) - Added type definitions for tool response mocking in agent conversations.

- [@elevenlabs/react@1.0.1](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/react@1.0.1) - Updated to depend on `@elevenlabs/client@1.1.0`.

- [@elevenlabs/react-native@1.0.1](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/react-native@1.0.1) - Updated to depend on `@elevenlabs/client@1.1.0` and `@elevenlabs/react@1.0.1`.

### API

:::accordion{title="View API changes"}
## New Endpoints

- [Run conversation analysis](https://elevenlabs.io/docs/api-reference/conversations/analysis/run-analysis) - `POST /v1/convai/conversations/{conversation_id}/analysis/run` - Re-runs the analysis for a completed conversation using the agent's current evaluation criteria and data collection settings.

- `POST /v1/music/video-to-music` - Generates background music from one or more video files supplied as multipart form data.

## Updated Endpoints

### ElevenAgents

- [Create agent](https://elevenlabs.io/docs/api-reference/agents/create), [Update agent](https://elevenlabs.io/docs/api-reference/agents/update)

  - Added `file_input` field (`FileInputConfig`, optional) to `ConversationConfig`, enabling file upload support (images, PDFs) in chat conversations when the LLM supports multimodal input
  - Added `max_conversation_duration_message` field (string, optional) to agent configuration — the agent sends this message when the session time limit is reached

- [Create test](/guides/changelog-api-reference-tests-create), [Update test](https://elevenlabs.io/docs/api-reference/tests/update)

  - Added `tool_mock_config` field (object, optional) — a map of tool names to `ToolResponseMockConfig` entries for controlling tool mocking behavior during simulation

- [Text search conversations](/guides/changelog-api-reference-conversations-messages-text-search)

  - Added `sort_by` query parameter (string, optional) — accepts `search_score` (default) or `created_at`

- [Submit batch call](/guides/changelog-api-reference-batch-calling-create)

  - Added `branch_id` field (string, optional) to target a specific agent branch
  - Added `environment` field (string, optional) to specify the target environment

- [Twilio outbound call](/guides/changelog-api-reference-integrations-twilio-outbound-call), [SIP trunk outbound call](/guides/changelog-api-reference-sip-trunk-outbound-call)

  - Conversation initiation client data now accepts `branch_id` and `environment` optional fields

### Speech to Text

- [Convert speech to text](/guides/changelog-api-reference-text-to-dialogue-convert)

  - Added `source_url` parameter (string, optional) — accepts a URL to an audio or video file, YouTube video, TikTok video, or other hosted media as an alternative to a file upload

### Voices

- [List shared voices](/guides/changelog-api-reference-voices-voice-library-get-shared)

  - Added `total_count` field (integer) to the response model

### Forced Alignment

- [Create forced alignment](https://elevenlabs.io/docs/api-reference/forced-alignment/create)

  - Removed `enabled_spooled_file` parameter from the multipart form data request body
:::

## Related pages

- [Administration](./administration-index.md)
- [API reference](./api-reference-index.md)
- [Changelog](./changelog-index.md)
- [ElevenAgents](./elevenagents-index.md)
- [ElevenAPI](./elevenapi-index.md)
- [ElevenCreative](./elevencreative-index.md)
- [ElevenLabs Documentation Docs](../index.md)
- [General Troubleshooting FAQ](./troubleshooting-index.md)
- [General Website FAQ](./website-index.md)
- [Help Center](./help-center-2-index.md)

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