# SDK releases: JavaScript SDK v2.66.0 - Added fileIds to sendMultimodalMessage By Steven Van · 2026-08-31 JavaScript SDK v2.66.0 - Added fileIds to sendMultimodalMessage, allowing one message to include multiple file attachments. ElevenLabs' [ElevenLabs]() SDKs now let a single multimodal message carry more than one file attachment. The JavaScript SDK (v2.66.0) adds fileIds to sendMultimodalMessage, and the Python SDK (v2.66.0) adds the equivalent file\_ids to send\_multimodal\_message. The client-side packages **@elevenlabs/client@1.23.0**, **@elevenlabs/react@1.15.0**, **@elevenlabs/types@0.22.1**, **@elevenlabs/react-native@1.2.25**, **@elevenlabs/convai-widget-core@0.17.1** and **@elevenlabs/convai-widget-embed@0.17.1** pick up the same change, sending both file and files fields for compatibility, with React exposing the updated client API. - Android SDK v0.12.2 preserves the onUnhandledClientToolCall callback when wiring session events, so unhandled client tool calls that expect a response now get an automatic error response instead of hanging unresolved. - ElevenLabs CLI v1.1.0 regenerates its API command bindings and adds command-scoped request attribution for ElevenAgents workflows, appending a cmd/ tag to the CLI User-Agent so requests from commands like agents push and agents create can be told apart. Full details are in the [changelog](). [![]()]() ![ElevenLabs]() ElevenLabs AI audio platform for text to speech, voice cloning, and video dubbing across dozens of languages while preserving the original tone and emotion. [View ElevenLabs →]() Sources [Original source]() [Read SDK releases: JavaScript SDK v2.66.0 - Added fileIds to sendMultimodalMessage on Creators Toolbox]() --- Canonical source: https://creatorstoolbox.com/blog/elevenlabs-sdk-releases-javascript-sdk-v2-66-0-added-fileids-to-sendmultimodalme