> 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

- **Environment Variables API**: New [environment variables](/docs/eleven-agents/integrate/environment-variables) endpoints for managing workspace-level configuration that agents can reference at runtime via `{{system_env__<label>}}` templating. Supports string, secret, and auth-connection variable types with per-environment value overrides. Endpoints include [create](/docs/api-reference/environment-variables/create), [list](/docs/api-reference/environment-variables/list), [get](/docs/api-reference/environment-variables/get), and [update](/docs/api-reference/environment-variables/update).

- **Auth Connections management**: New workspace-level auth connections API for managing authentication credentials used by agent tools and integrations. Supports multiple auth methods including OAuth2 client credentials, JWT, basic auth, bearer tokens, custom headers, and integration-managed OAuth2 authorization code flows. Endpoints include create, list, and delete operations.

- **Knowledge Base URL refresh**: New [refresh](/docs/api-reference/knowledge-base/refresh) endpoint (`POST /v1/convai/knowledge-base/{documentation_id}/refresh`) to re-fetch and update content for URL-sourced knowledge base documents. Knowledge base documents also now support auto-sync configuration with `enable_auto_sync`, `auto_remove`, and `auto_sync_info` fields.

- **Guardrail retry with feedback**: Custom and content guardrails now support configurable [trigger actions](/docs/eleven-agents/best-practices/guardrails) with `EndCallTriggerAction` and `RetryTriggerAction` options. When set to retry, the agent re-generates its response with injected system feedback up to 3 attempts. Available placeholders include `{{trigger_reason}}` and `{{agent_message}}` for contextual retry guidance.

- **Conversation History system variable**: Added a new `system__conversation_history` dynamic variable that provides a lazily-evaluated, JSON-serialized conversation history at runtime. This is useful for passing full conversation context to tools, webhooks, or sub-agent handoffs.

- **Webhook tool content type**: Server tools now support a configurable [content type](/docs/eleven-agents/customization/tools/server-tools) for webhook body parameters, allowing you to choose between `application/json` and `application/x-www-form-urlencoded` formats. The URL-encoded format is useful for integrating with legacy systems, OAuth token endpoints, and payment processors.

- **WhatsApp outbound messages**: Updated the WhatsApp integration with a new [outbound message dialog](/docs/eleven-agents/whatsapp) in the dashboard, enabling agents to send outbound messages in addition to calls through the WhatsApp channel.

- **Agent and resource listing filters**: The [list agents](/docs/api-reference/agents/list), [list knowledge base documents](/docs/api-reference/knowledge-base/list), and [list tools](/docs/api-reference/tools/list) endpoints now support a `created_by_user_id` query parameter (use `@me` for the current user). The previous `show_only_owned_agents` and `show_only_owned_documents` parameters are deprecated.

- **Workflow conditional expressions**: Added a new `conditional_operator` AST node to the workflow expression schema, enabling branching logic within agent workflow definitions.

### Music

- **Music Marketplace**: New [Music Marketplace](/docs/overview/capabilities/music/marketplace) documentation covering the marketplace for licensing AI-generated music, including usage types, creator payouts, and licensing details.

### SDK Releases

#### Python SDK

- [v2.40.0](https://github.com/elevenlabs/elevenlabs-python/releases/tag/v2.40.0) - Added `environment` parameter support for ElevenAgents conversations, enabling environment-specific agent connections. Fern regeneration to match the latest API schema including environment variables, auth connections, knowledge base refresh, and guardrail trigger actions.

#### JavaScript SDK

- [v2.40.0](https://github.com/elevenlabs/elevenlabs-js/releases/tag/v2.40.0) - Added `multimodal_message` WebSocket event type for ElevenAgents real-time conversations. Fern regeneration to match the latest API schema including environment variables, auth connections, knowledge base refresh, and guardrail trigger actions.

#### iOS SDK

- [v3.1.1](https://github.com/elevenlabs/elevenlabs-swift-sdk/releases/tag/v3.1.1) - Added `environment` parameter support for environment-specific agent connections. Fixed a visionOS build error by bumping the platform requirement to v2.

#### Packages

- [@elevenlabs/types@0.6.1](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/types@0.6.1) - Added `multimodal_message` WebSocket event type for ElevenAgents real-time conversations.
- [@elevenlabs/client@0.15.2](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/client@0.15.2) - Added `multimodal_message` WebSocket event support.
- [@elevenlabs/react@0.14.3](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/react@0.14.3) - Added `multimodal_message` WebSocket event support.
- [@elevenlabs/convai-widget-core@0.10.4](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/convai-widget-core@0.10.4), [@elevenlabs/convai-widget-core@0.10.5](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/convai-widget-core@0.10.5) - Updated to `@elevenlabs/client@0.15.2`.
- [@elevenlabs/convai-widget-embed@0.10.4](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/convai-widget-embed@0.10.4), [@elevenlabs/convai-widget-embed@0.10.5](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/convai-widget-embed@0.10.5) - Updated to `@elevenlabs/client@0.15.2`.

#### Packages v1.0.0 Release Candidate

The first release candidate for v1.0.0 of the ElevenAgents client SDKs is now available. This is a major release with breaking changes that improve the API surface, add granular React hooks for better render performance, and unify the React Native SDK with the React SDK.

To try out the release candidate:

```bash
npm install @elevenlabs/client@next @elevenlabs/react@next @elevenlabs/react-native@next
```

An [`elevenlabs:sdk-migration`](https://github.com/elevenlabs/packages/blob/main/.agents/skills/elevenlabs%3Asdk-migration/SKILL.md) skill is available to help AI coding assistants automatically migrate your codebase to the new APIs. Add it to your Claude Code, Cursor, or Windsurf project to get guided migration support.

Key changes in v1.0.0:

- **`@elevenlabs/client`**: `Conversation` is now a namespace object and type alias for `TextConversation | VoiceConversation` instead of a class. The `Input` and `Output` classes are replaced by `InputController` and `OutputController` interfaces, with new convenience methods on the conversation instance (`setMicMuted()`, `setVolume()`, `getInputByteFrequencyData()`, `getOutputByteFrequencyData()`). `changeInputDevice()` and `changeOutputDevice()` now return `void`.
- **`@elevenlabs/react`**: `useConversation` now requires a `ConversationProvider` ancestor. New granular hooks for fine-grained re-rendering: `useConversationControls()`, `useConversationStatus()`, `useConversationInput()`, `useConversationMode()`, `useConversationFeedback()`. New `useConversationClientTool()` hook for dynamically registering client tools from React components with full type safety.
- **`@elevenlabs/react-native`**: Complete API rewrite replacing `ElevenLabsProvider` and `useConversation` with `ConversationProvider` and the same granular hooks from `@elevenlabs/react`. WebRTC polyfills and native AudioSession configuration are applied automatically on import.

See the full release notes and migration guides:

- [@elevenlabs/client@1.0.0-rc.1](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/client@1.0.0-rc.1)
- [@elevenlabs/react@1.0.0-rc.1](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/react@1.0.0-rc.1)
- [@elevenlabs/react-native@1.0.0-rc.1](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/react-native@1.0.0-rc.1)
- [@elevenlabs/types@0.7.0-rc.0](https://github.com/elevenlabs/packages/releases/tag/@elevenlabs/types@0.7.0-rc.0)

### API

<Accordion title="View API changes">

## New Endpoints

### ElevenAgents

- [Create environment variable](/docs/api-reference/environment-variables/create) - `POST /v1/convai/environment-variables` - Create a new environment variable with string, secret, or auth-connection type
- [List environment variables](/docs/api-reference/environment-variables/list) - `GET /v1/convai/environment-variables` - List all environment variables in the workspace
- [Get environment variable](/docs/api-reference/environment-variables/get) - `GET /v1/convai/environment-variables/{env_var_id}` - Get a specific environment variable
- [Update environment variable](/docs/api-reference/environment-variables/update) - `PATCH /v1/convai/environment-variables/{env_var_id}` - Update an environment variable, including per-environment value removal via `null`
- [Refresh URL document content](/docs/api-reference/knowledge-base/refresh) - `POST /v1/convai/knowledge-base/{documentation_id}/refresh` - Re-fetch content for URL-sourced knowledge base documents

### Workspaces

- `POST /v1/workspace/auth-connections` - Create a workspace auth connection with support for OAuth2, JWT, basic, bearer, custom header, and integration-managed auth methods
- `GET /v1/workspace/auth-connections` - List all workspace auth connections with dependency information (tools, MCP servers, integration connections)
- `DELETE /v1/workspace/auth-connections/{auth_connection_id}` - Delete a workspace auth connection

### Speech to Text

- `GET /v1/speech-to-text/evaluation/eval-criteria` - List evaluation criteria
- `POST /v1/speech-to-text/evaluation/eval-criteria` - Create an evaluation criterion
- `GET /v1/speech-to-text/evaluation/eval-criteria/{criterion_id}` - Get a specific evaluation criterion
- `PATCH /v1/speech-to-text/evaluation/eval-criteria/{criterion_id}` - Update an evaluation criterion
- `DELETE /v1/speech-to-text/evaluation/eval-criteria/{criterion_id}` - Delete an evaluation criterion
- `POST /v1/speech-to-text/evaluation/evaluations` - Trigger an evaluation
- `GET /v1/speech-to-text/evaluation/evaluations` - List evaluations
- `GET /v1/speech-to-text/evaluation/evaluations/{evaluation_id}` - Get a specific evaluation
- `GET /v1/speech-to-text/evaluation/human-agents` - List human agents
- `GET /v1/speech-to-text/evaluation/human-agents/{agent_id}` - Get a human agent
- `DELETE /v1/speech-to-text/evaluation/human-agents/{agent_id}` - Delete a human agent
- `GET /v1/speech-to-text/evaluation/analytics` - Get evaluation analytics
- `GET /v1/speech-to-text/evaluation/eval-criteria/{criterion_id}/analytics` - Get analytics for a specific criterion
- `GET /v1/speech-to-text/evaluation/human-agents/{agent_id}/analytics` - Get analytics for a specific human agent

## Updated Endpoints

### ElevenAgents

- [Get signed URL](/docs/api-reference/conversations/get-signed-url), [Get conversation token](/docs/api-reference/conversations/get-webrtc-token)

  - Added `environment` query parameter (string, optional) for environment-specific resolution

- [List agents](/docs/api-reference/agents/list)

  - Added `created_by_user_id` query parameter (string, optional, supports `@me`)
  - Deprecated `show_only_owned_agents` in favor of `created_by_user_id`

- [List knowledge base documents](/docs/api-reference/knowledge-base/list)

  - Added `created_by_user_id` query parameter (string, optional, supports `@me`)
  - Deprecated `show_only_owned_documents` in favor of `created_by_user_id`

- [List tools](/docs/api-reference/tools/list)

  - Added `created_by_user_id` query parameter (string, optional, supports `@me`)
  - Deprecated `show_only_owned_documents` in favor of `created_by_user_id`

- [Get knowledge base chunk](/docs/api-reference/knowledge-base/get-chunk)

  - Added `embedding_model` query parameter (string, optional) to specify the embedding model for chunk retrieval

- [Create agent](/docs/api-reference/agents/create), [Update agent](/docs/api-reference/agents/update), [Create draft](/docs/api-reference/agents/drafts/create)

  - Added `guardrail_trigger_action` support with `EndCallTriggerAction` and `RetryTriggerAction` schemas
  - Added `conditional_operator` AST node to workflow expression definitions
  - Agent schemas now support `ConvAIEnvVarLocator` and `EnvironmentAuthConnectionLocator` for referencing environment variables in tool configs

- [SIP trunk outbound call](/docs/api-reference/sip-trunk/outbound-call)

  - Request schema updated to accommodate new environment-related fields

- [Simulate conversation](/docs/api-reference/agents/simulate-conversation), [Simulate conversation stream](/docs/api-reference/agents/simulate-conversation-stream)

  - Added `simulation_environment` field to request schema

## Schema Changes

### New Schemas

- `ConvAIEnvironmentVariable`, `ConvAIEnvironmentVariableCreate`, `ConvAIEnvironmentVariableUpdate` - Environment variable models supporting string, secret, and auth-connection types
- `ConvAIEnvVarLocator`, `EnvironmentAuthConnectionLocator` - Locators for referencing environment variables in tool and MCP server configs
- `EndCallTriggerAction`, `RetryTriggerAction` - Guardrail trigger action schemas for end-call and retry-with-feedback behaviors
- `ConditionalOperator` - New AST node for conditional expressions in agent workflows
- `AuthConnectionCreateRequest`, `AuthConnectionResponse`, `AuthConnectionDependencies` - Workspace auth connection management schemas with support for OAuth2, JWT, basic, bearer, custom header, WhatsApp, and integration-managed auth methods
- `SpeechToTextEvaluation*` - Suite of schemas for speech-to-text evaluation criteria, evaluations, human agents, and analytics

### Modified Schemas

- `MCPServerConfig`, `MCPServerConfigOutput` - Added support for `ConvAIEnvVarLocator` references in server configuration
- `CustomGuardrailConfig` - Added `trigger_action` field for configuring end-call or retry behavior
- `Contributor` - Added optional `bio` (string) and `profile_id` (string) fields
- `ASTLLMNode` - Added `value_schema` field; `prompt` field is deprecated in favor of `value_schema`
- `TelephonyDirection` - Refactored to a shared enum referenced by multiple conversation and telephony models

</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.