Transcribe audio to text via webhook with Smallest.ai speech-to-text

Quick Overview This workflow exposes a POST webhook endpoint that accepts a binary audio file, transcribes it to text using Smallest.ai speech-to-text, and returns the transcript in the same synchronous HTTP response.

How it works Receives an HTTP POST request on the /transcribe-audio webhook endpoint containing an audio file as binary data. Sends the incoming binary audio (from the audio property) to Smallest.ai for speech-to-text transcription. Extracts the returned transcription and formats it into a transcript field. Responds to the original webhook request with the transcript payload.

Setup Create and connect your Smallest.ai API credentials in the Smallest.ai transcription step. Activate the workflow to generate the production webhook URL and use it in your client application. Ensure your client sends the audio file as binary under the audio property when calling the webhook.