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File Upload

The File Upload node uploads files to cloud storage (S3) from within an orchestration. It supports multiple input methods — direct file, base64 string, public URL, or WhatsApp media — and returns a public download URL. File Upload Node

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Use Cases

  • Store files received from a webhook or WhatsApp message in S3
  • Convert base64-encoded file data to a publicly accessible URL
  • Mirror files from an external URL into your own storage
  • Attach uploaded file URLs to records in Airtable or Slack

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Node Reference

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Parameters

ParameterTypeRequiredDescription
OperationSelectYesThe upload operation to perform (see below)
Media IDStringConditionalWhatsApp media ID from the incoming message (required for Upload WhatsApp Media)
Custom File NameStringNoName for the uploaded file (auto-generated if not provided)
Content TypeStringNoMIME type of the file (auto-detected if not provided, e.g. application/pdf)
URL Expiry (TTL)NumberNoHow long the presigned download URL remains valid, in minutes (default: 10)
Bucket PathStringNoSub-folder path within the storage bucket (default: uploads/workflow/)

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Operations

OperationDescription
Upload WhatsApp MediaDownload a media item from WhatsApp using its media ID and upload it to storage
Upload from URLDownload a file from a public URL and upload it to storage
Upload BinaryUpload a binary file received from an upstream node

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Output Data

A successful upload returns the storage URL: 
{
  "url": "https://subverse-storage.s3.ap-south-1.amazonaws.com/uploads/report-2025.pdf",
  "fileName": "report-2025.pdf",
  "mimeType": "application/pdf",
  "size": 204800,
  "uploadedAt": "2025-03-10T09:00:00.000Z"
}
Reference in downstream nodes: 
{{ fileUpload.url }}
{{ fileUpload.fileName }}
  • WhatsApp Trigger — Receive a WhatsApp media message and upload the file
  • Airtable — Attach the uploaded URL to an Airtable record
  • Slack — Share the file URL in a Slack message