August 31, 2026 | ElevenLabs Documentation

Phone keypad input: Agent conversation configuration now supports optional dtmf_input_settings for DTMF input. Configure the digit timeout, use # as a terminator and redact keypad entries from transcripts, logs and analysis.
Conversation attachment history: Get conversation transcript entries now include file_inputs, an array containing every attached file’s ID, name, MIME type and URL.
Agent tag filtering: List agents now accepts an optional tags query parameter. Repeat the parameter to match agents with any of the supplied tags.
Batch campaign context: Get conversation now identifies batch calls with nullable campaign metadata containing the required campaign_id and campaign_lead_id.

Waveform visual data: Generate music detailed, Stream music with details and Upload music now accept optional with_waveform_visual (boolean, default false). Opted-in responses return a low-resolution waveform_visual integer array with four samples per second.

Project pagination behavior: List Dubbing projects and List language targets now clamp page_size to 1–100. Project status filtering includes queued, and both endpoints document using next_cursor to retrieve the next page.

v2.66.0 - Added fileIds to sendMultimodalMessage, allowing one message to include multiple file attachments.

v2.66.0 - Added file_ids to send_multimodal_message, allowing one message to include multiple file attachments.

v0.12.2 - Preserved the onUnhandledClientToolCall callback when wiring session events. Unhandled client tool calls that expect a response now receive the automatic error response instead of remaining unresolved.

v1.1.0 - Regenerated API command bindings and added command-scoped request attribution for ElevenAgents workflows. These commands append cmd/<command> to the CLI User-Agent, allowing requests from workflows such as agents push and agents create to be distinguished.

Updated endpoints

List agents - GET /v1/convai/agents
- Added optional nullable tags (string array). Repeat the query parameter to match any supplied tag.
Create agent, Get agent and Update agent
- Added optional nullable conversation_config.conversation.dtmf_input_settings (DTMFInputConfig). It supports dtmf_input_timeout (number, 0.5–10 seconds, default 2), hash_terminator (boolean, default true) and redact_input (boolean, default false).
- Added optional sip_refer_play_dialtone (boolean, default true) to phone-number transfer configuration. Set it to false to keep the original call leg silent while a SIP REFER transfer completes.
- Start- and end-procedure system tools now accept either a ProcedureVersionRef or a ProcedureDraftRef. Draft references require procedure_id (string) and set version_id to null.
Get conversation - GET /v1/convai/conversations/{conversation_id}
- Added file_inputs (array of ConversationHistoryTranscriptFileInputResponseModel) to transcript entries. Each item requires file_id, original_filename, mime_type and file_url (strings).
- Added optional nullable campaign (BatchCallingCampaignInformation) to batch-call metadata. The object requires campaign_id and campaign_lead_id (strings).
- Added dtmf to ChatSourceMedium.
Conversation triage ticket issue types add incorrect_information, documentation_gap, platform_bug and wrong_action.

Generate music detailed (POST /v1/music/detailed) and Stream music with details (POST /v1/music/detailed/stream)
- Added optional with_waveform_visual (boolean, default false).
- Detailed responses add nullable waveform_visual (integer array), sampled four times per second from -1000 to 1000.
Upload music - POST /v1/music/upload
- Added optional with_waveform_visual (boolean, default false) and nullable waveform_visual (integer array) in the response.

Create Studio project and Create podcast
- quality_preset now accepts null, and its standard schema default was removed.

List Dubbing projects - GET /v1/dubbing/project
- page_size remains an optional integer with default 20, but values are now clamped to 1–100 instead of rejected.
- The status filter now documents queued, preparing, ready and failed.
- Pass the preceding response’s next_cursor in cursor; omit it for the first page.
List language targets - GET /v1/dubbing/project/{project_id}/language
- page_size remains an optional integer with default 20, but values are now clamped to 1–100 instead of rejected.
- The status filter supports queued, processing, completed, stale and failed.
- Pass the preceding response’s next_cursor in cursor; omit it for the first page.