> This is a page from the ElevenLabs documentation. For a complete page index, fetch https://elevenlabs.io/docs/llms.txt. For the full documentation in a single file, fetch https://elevenlabs.io/docs/llms-full.txt.

### ElevenAgents

- **Test-specific tool mocks**: Agent simulations and unit tests can now define `tool_mock_overrides`, keyed by tool ID, to replace shared mocks for one test. `ToolResponseMockConfig` also adds optional `is_error` (boolean, default `false`) so a mock can exercise tool-failure paths.
- **Translated workflow messages**: Literal Say node messages add `text_translations`, a map of language keys to `TranslatedString` objects. The field is optional on input and required on output, so strict response validators must accept it.
- **Conversation version filters**: [List conversations](/docs/api-reference/conversations/list) and [Text search conversation messages](/docs/api-reference/conversations/messages/text-search) add the optional `version_id` query parameter (string) to filter results by agent version.
- **Knowledge base system tool**: Agent configuration adds a `knowledge_base` system tool with configurable `enabled_strategies` (`SearchStrategy[]`). Agent knowledge base RAG queries add optional `use_agent_defaults` (boolean, default `true`); set it to `false` to use neutral retrieval settings while retaining the agent's embedding model.
- **Agent voice activity detection**: Agent create, update, response and workflow-override schemas add `vad` configuration. `VADConfig` currently supports `background_voice_detection` (boolean, default `false`).
- **WebSocket custom LLMs**: `CustomLLMAPIType` adds `websocket`.
- **File memory controls**: Widget file-input configuration adds `max_files_in_memory` (integer, 1–30, default `10`). Files beyond the limit are summarized and released from memory; `max_files_per_conversation` must be `-1` or at least the memory limit.
- **DTMF input redaction**: `DTMFInputConfig` adds optional `redact_input` (boolean, default `false`) to replace caller keypad digits in transcripts, conversation logs and analysis. Digits repeated by the agent or passed to tools remain unchanged.

### Speech to Text

- **Realtime entity detection**: Scribe v2 Realtime adds the `entity_detection` query option. It accepts `all`, one entity type or category, or an array of types and categories, and emits detected entities in `committed_transcript_entities` events. See the [entity detection guide](/docs/eleven-api/guides/how-to/speech-to-text/batch/entity-detection) for supported categories.

### Voices

- **Voice replication across data residencies**: Added `POST /v1/voices/{voice_id}/replicate-to-isolated-environment` for copying an Instant Voice Clone or Voice Design voice to a workspace in the same consolidated billing group. Requests require `target_workspace_id` (string) and accept `preserve_voice_id` (boolean, default `true`); responses return the target `voice_id`.
- **Character metadata**: Character responses add `recommended_voice_ids` (string array, default `[]`), metadata adds nullable `role` (`CharacterRole`), and `CharacterAge` replaces `middle-aged` with `middle_aged`.

### SDK Releases

#### Packages

- [@elevenlabs/client@1.16.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Fclient%401.16.0), [@elevenlabs/react@1.11.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Freact%401.11.0), [@elevenlabs/types@0.18.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Ftypes%400.18.0), [@elevenlabs/react-native@1.2.17](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Freact-native%401.2.17) and [@elevenlabs/convai-widget-core@0.15.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Fconvai-widget-core%400.15.0) - Added `onAgentReasoningResponsePart`, which receives streaming agent reasoning events with `start`, `delta` and `stop` types.
- [@elevenlabs/convai-widget-core@0.15.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Fconvai-widget-core%400.15.0) and [@elevenlabs/convai-widget-embed@0.15.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Fconvai-widget-embed%400.15.0) - Added `show_resize_button` and the `show-resize-button` embed attribute. Set either to `false` to hide the widget header's expand and collapse control.
- [@elevenlabs/client@1.17.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Fclient%401.17.0), [@elevenlabs/react@1.12.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Freact%401.12.0), [@elevenlabs/types@0.19.0](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Ftypes%400.19.0), [@elevenlabs/react-native@1.2.18](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Freact-native%401.2.18) and [@elevenlabs/convai-widget-core@0.15.1](https://github.com/elevenlabs/packages/releases/tag/%40elevenlabs%2Fconvai-widget-core%400.15.1) - Added the `enableLogging` option to `Scribe.connect` and `useScribe`. Setting it to `false` starts an enterprise zero-retention session. The Scribe `session_started` type now reports `enable_logging`; the unused `disable_logging` field was removed.

#### MCP Server

- [v0.12.1](https://github.com/elevenlabs/elevenlabs-mcp/releases/tag/v0.12.1) - Includes the v0.11 tool updates and a dependency refresh that resolves 44 security alerts.
- [v0.11.0](https://github.com/elevenlabs/elevenlabs-mcp/releases/tag/v0.11.0) - Added `simulate_conversation` with configurable simulated-user behavior, evaluation criteria, transcript output and pass/fail analysis. The `speech_to_text` tool now defaults to `scribe_v2`, and `voice_clone` now sends audio file contents instead of path strings.

### API

<Accordion title="View API changes">

## New Endpoints

### Voices

- `POST /v1/voices/{voice_id}/replicate-to-isolated-environment`
  - Replicates an Instant Voice Clone or Voice Design voice into another workspace's isolated environment
  - Requires `target_workspace_id` (string)
  - Accepts optional `preserve_voice_id` (boolean, default `true`)
  - Returns required `voice_id` (string)

## Updated Endpoints

### ElevenAgents

- [List conversations](/docs/api-reference/conversations/list) - `GET /v1/convai/conversations`
  - Added optional `version_id` (string) query parameter
- [Text search conversation messages](/docs/api-reference/conversations/messages/text-search) - `GET /v1/convai/conversations/messages/text-search`
  - Added optional `version_id` (string) query parameter
- `POST /v1/convai/agents/{agent_id}/knowledge-base/rag-query`
  - Added optional `use_agent_defaults` (boolean, default `true`) request field

## Schema Changes

### ElevenAgents

- Simulation and unit-test payloads add optional `tool_mock_overrides` maps; `ToolResponseMockConfig` adds optional `is_error` (boolean, default `false`)
- `SayNodeLiteralMessage` adds `text_translations` (map of `TranslatedString`); the field is optional on input and required on output
- Agent configuration adds `knowledge_base` (`KnowledgeBaseToolConfig`) and `vad` (`VADConfig`)
- `CustomLLMAPIType` adds `websocket`
- `FileInputConfig` adds `max_files_in_memory` (integer, 1–30, default `10`)
- `DTMFInputConfig` adds optional `redact_input` (boolean, default `false`)
- Realtime agent configuration now defaults to `eleven_realtime_v1_mini`

### Voices

- Character responses add `recommended_voice_ids` (string array, default `[]`)
- Character metadata adds nullable `role` (`CharacterRole`)
- Breaking: `CharacterAge` replaces `middle-aged` with `middle_aged`; clients sending the old value must migrate

### Text to Speech

- Breaking: removed `AudioFilterId` and `audio_filter` from ElevenAgents Text to Speech configuration schemas

</Accordion>

> ElevenLabs provides APIs and SDKs for text to speech, voice cloning, speech to text, sound effects, voice isolator, voice changer, and conversational AI agents. Build voice-enabled applications with lifelike audio generation.