Backblaze B2 Cloud Storage offers affordable, S3-compatible object storage for files, backups, and media. Use Stepper to upload, download, organize, and react to file events in your B2 buckets.
Triggers when a new file is created in the selected bucket (uploads, multipart uploads, copies, or replicas). Requires B2 Event Notifications to be enabled on your Backblaze account — if subscribing fails, contact Backblaze Support to request access.
3 parameters
Bucket
Event Types
Object Name Prefix
File Deleted
Triggers when a file version is deleted in the selected bucket (user delete or lifecycle-rule delete). Requires B2 Event Notifications to be enabled on your Backblaze account — if subscribing fails, contact Backblaze Support to request access.
3 parameters
Bucket
Event Types
Object Name Prefix
File Hidden
Triggers when a hide marker is created for a file in the selected bucket (soft delete in versioned buckets). Requires B2 Event Notifications to be enabled on your Backblaze account — if subscribing fails, contact Backblaze Support to request access.
3 parameters
Bucket
Event Types
Object Name Prefix
Actions available for Backblaze B2 on Stepper
Upload File
Uploads a file to a bucket. Performs the two-step b2_get_upload_url then POST <uploadUrl> flow under the hood.
6 parameters
Bucket
File Name
File
Content Type
Content Disposition
Custom Metadata
Download File
Downloads a file's bytes. Returns the file as a Stepper file output. Provide either a File ID, or a Bucket + File Name.
4 parameters
Lookup By
Bucket
File Name
File ID
Get File Info
Returns full metadata for a specific file version (size, SHA-1, content type, custom info, upload timestamp).
2 parameters
Bucket
File
Delete File
Permanently deletes a specific file version. Use Hide File for soft-delete in versioned buckets.
3 parameters
Bucket
File
File Name
Copy File
Copies an existing file to a new key, optionally to a different bucket, without re-uploading bytes.
8 parameters
Source Bucket
Source File
New File Name
Destination Bucket
Metadata Directive
Content Type
Custom Metadata
Byte Range
Hide File
Adds a hide marker so the file no longer appears in List Files. Useful for soft-delete in versioned buckets.
2 parameters
Bucket
File Name
Generate Signed Download URL
Generates a time-limited signed URL for downloading a file (or any file matching a prefix) from a private bucket.
4 parameters
Bucket
File Name or Prefix
Valid Duration (Seconds)
Content Disposition Override
Create Bucket
Creates a new bucket in the authenticated account.
4 parameters
Bucket Name
Bucket Type
Bucket Info
Enable File Lock
Update Bucket
Updates an existing bucket's type or metadata.
3 parameters
Bucket
Bucket Type
Bucket Info
Delete Bucket
Deletes a bucket. The bucket must be empty before it can be deleted.
1 parameters
Bucket
Find File
Finds a single file by exact name in a bucket. Returns the latest version's metadata.
2 parameters
Bucket
File Name
List Files
Lists files in a bucket (only the latest version of each name). Supports prefix filtering.
3 parameters
Bucket
Prefix
Max Results
Find Bucket
Finds a single bucket by exact name or ID.
3 parameters
Lookup By
Bucket Name
Bucket ID
List Buckets
Lists all buckets in the authenticated account.
1 parameters
Bucket Types
API Request
Make a generic authenticated request to the B2 Native API. Useful for endpoints not directly supported by Stepper.
4 parameters
HTTP Method
Path
Query Parameters
Request Body
Make HTTP Request
Make an HTTP request to any URL with full control over method, headers, and body.