n8n integration

Transcribe audio binaries with the Luntrex n8n endpoint.

Point the n8n HTTP Request node at the Luntrex audio endpoint, load models after credential setup, and stream transcripts directly into your workflow.

Configure the audio transcribe node

This guide shows how to authenticate, fetch the model dropdown, and send binary audio from n8n to /v1/n8n/audio/transcribe.

Community node ID
n8n-nodes-luntrex-audio-transcribe
View on npm

Integration steps

Create a Luntrex API key Generate a key in your Luntrex dashboard. You will use it in the n8n credential header.
Set the n8n credential In an HTTP Request node, set the base URL to your Luntrex API and add Authorization: Bearer <API_KEY>.
Load model dropdown After credentials are saved, call GET /v1/n8n/audio/models to populate the model list (e.g., openai/whisper-1).
Send binary audio Use Send Binary Data with Binary Property data. The controller maps data to the expected audio upload field.
Execute Run the node. Responses include text, status, and the raw provider payload.
Tip: Keep audio files under 25 MB. Use base64 only if multipart upload is not possible.

Parameter reference

  • Credential Bearer key for your Luntrex account.
  • Model Select from the dropdown after /models loads (format provider/model).
  • Binary Property data (maps to audio on the server).
  • Base64 fallback Send JSON with audio_base64 if you cannot send multipart.
  • Optional fields filename, mime_type to override defaults.

Endpoints

  • GET /v1/n8n/audio/models returns active audio models for the dropdown.
  • POST /v1/n8n/audio/transcribe accepts multipart audio or audio_base64 plus model.
  • Both endpoints require Authorization: Bearer <API_KEY>.

Example HTTP Request config (n8n)

  • URL https://luntrex.com/v1/n8n/audio/transcribe
  • Method POST
  • Authentication Header Authorization: Bearer <API_KEY>
  • Send Binary Data On; Binary Property data
  • Body Form field model = openai/whisper-1

Troubleshooting

  • 401/403 Check API key and account credits.
  • No models Ensure providers/models marked model_type=audio are active.
  • 422 Provide either binary audio or audio_base64, and a model.
  • Size issues Keep audio under 25 MB or adjust max_size_mb in model settings.
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