# Alpha

> And to talk to SFTP.

URL: https://bkpdb.com/changelog/2026-01-22/
Date: 2026-01-22
Tag: alpha

---

## Agent

### Added

- SFTP storage backend, planned and built across forty-nine scenarios. OpenSSH + SFTP on the integration path, sat behind the same `StorageBackend` interface the S3 path uses.
- `Upload` / `Download` / `Delete` / `List` / `ResumeUpload` on SFTP, with the same crash-resume receipt the S3 path uses.

### Changed

- `ConfigProvider` rejects S3 and SFTP destinations missing required fields up front, instead of failing partway through a job.