n8n-nodes-speech-to-text-cloud

This is an n8n community node that integrates with Online Speech To Text Cloud, a premium transcription service. Transcribe audio/video files, apply text transformations (summarize, translate, diarize), and retrieve structured results directly in your n8n workflows.

Installation | Operations | Credentials | Compatibility | Usage | Troubleshooting | Resources

Installation

Follow the installation guide in the n8n community nodes documentation.

Operations

Credentials

1. Sign up at Online Speech To Text Cloud and generate an API key starting with stt_live_...
2. In n8n, create a new Online Speech To Text Cloud API credential and paste your key.
3. The node automatically attaches the key via the x-api-key header.

Compatibility

• n8n version: ≥ 1.0.0 (tested with 1.20+)
• Node.js: ≥ 18.17.0
• Works in n8n Cloud, self-hosted, and community editions.

Usage

Transcribing Audio

1. Download the file: Use an HTTP Request node to fetch your audio from a URL. Set Response Format to File.
2. Configure Transcribe Node:
   • Audio File: Enter the name of the binary property from the previous HTTP Request step (usually data)
   • Language Code (Optional): Provide a 2-letter code (e.g., en, de, fr). Leave as yyy for auto-detection.
3. Send: The node will send your audio file as multipart/form-data to the API.

Example workflow:

HTTP Request (download audio) ↓ Transcribe (this node) ↓ Get Result (poll for completion)

Getting Results & Polling

The Get Result operation returns the current status and transcript. Since n8n declarative nodes don't include built-in polling loops, wrap it in a simple workflow loop:

1. Add a Wait node (set to Resume or Timeout).
2. Connect: Get Result → Wait → If (check status === 'finished')
3. Loop until finished, then proceed.

Example polling pattern:

Get Result ↓ If (status = 'finished') ├─ YES → Extract transcript data └─ NO → Wait (10 sec) → Loop back

Applying LLM Tasks

Use Apply Task to run transformations on an existing completed job:

• Task Type: summarize, translate, diarize, compliance
• Language (for translations): Target language code (e.g., es, de) or yyy for other tasks
• Job ID: The ID from your transcription job

Troubleshooting

"Missing boundary in multipart" error

• Ensure the binary property name is correct (usually data from HTTP Request)
• Verify the previous node is returning file data (not text)

"Field required" on audio_file

• Check that the HTTP Request node has Response Format set to File
• Confirm the property name matches exactly what the upstream node outputs

Timeout waiting for transcription

• Large files may take longer; increase the Wait node timeout
• Check job status via Get Result to see if processing failed or is still in progress

API key not working

• Verify your API key starts with stt_live_
• Check that the credential is properly saved in n8n
• Ensure you're using the correct credential in the node configuration

Resources

• n8n community nodes documentation
• Online Speech To Text Cloud API Docs
• Pricing & Plans