@pokash/n8n-nodes-minio

Custom n8n community node for uploading binary data to MinIO (or any S3-compatible storage) with full support for arbitrary multi-level object paths.

Built because the existing community MinIO/S3 nodes don't let you specify a free-form subfolder path (e.g. Faktury/2026/01) at execution time alongside binary data passed from a previous node.

Features

• Operation: Upload Binary Data — uploads every binary property on the incoming item to MinIO.
• Multi-level Object Path — type any prefix like Faktury/2026/01 and the file lands in bucket/Faktury/2026/01/<filename>. Slashes in S3 are virtual folders, so no folder pre-creation is needed.
• Bucket dropdown — buckets are loaded dynamically from the configured credentials.
• Overwrite control — when disabled, existing objects are detected with statObject and the upload is skipped.
• Add Timestamp — optionally appends an ISO timestamp before the extension to avoid collisions.
• Custom file name — override the binary fileName if needed.
• Per-binary results — output is an array with bucket, objectName, etag, size, mimeType, success per binary property.

Credentials (MinIO API)

| Field | Description | | ------------------------------ | ------------------------------------------------------------------------------------------------------ | | Endpoint | Full URL with scheme, e.g. https://minio.example.com or https://minio.example.com:9443 | | Access Key | MinIO access key / S3 access key ID | | Secret Key | MinIO secret key / S3 secret access key | | Region | Defaults to us-east-1 | | Ignore SSL Issues (Insecure) | Skip TLS certificate validation. Use only with self-signed certs on internal deployments. |

Build & install

npm install
npm run build
npm pack
# then install the produced .tgz in your n8n instance, e.g.:
# npm install -g ./pokash-n8n-nodes-minio-1.0.0.tgz

Output shape (per uploaded binary property)

{
  "binaryProperty": "data",
  "bucket": "documents",
  "objectName": "Faktury/2026/01/invoice.pdf",
  "originalFileName": "invoice.pdf",
  "uploadedFileName": "invoice.pdf",
  "size": 12345,
  "mimeType": "application/pdf",
  "etag": "...",
  "versionId": null,
  "success": true
}