Use S3 Storage with Boto3 (Python)

Point the S3 client at your HubforHost endpoint URL with signature version s3v4.

import boto3
from botocore.client import Config

s3 = boto3.client(
    "s3",
    endpoint_url="https://YOUR_S3_ENDPOINT",
    aws_access_key_id="YOUR_ACCESS_KEY",
    aws_secret_access_key="YOUR_SECRET_KEY",
    config=Config(signature_version="s3v4"),
)

Upload objects with server-side encryption as agreed during provisioning.

with open("dataset.parquet", "rb") as data:
    s3.put_object(
        Bucket="my-bucket",
        Key="2026/dataset.parquet",
        Body=data,
        ServerSideEncryption="AES256",
    )