b2
Command Line Tool for Backblaze B2
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has no known vulnerabilities, low install friction, and a permissive MIT license. It is production-stable and well-suited for developers who need programmatic or scripted access to B2 Cloud Storage. Install it if you use Backblaze B2 and want command-line control; skip it if you only need the web console or have no B2 account.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later; B2 account credentials needed for authorization.
- Low install friction with a pure-Python wheel distribution.
- The package is actively maintained with a recent release and no known vulnerabilities.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and private use with minimal restrictions, making it suitable for both personal and enterprise deployments.
last release 2026-06-08 (67 days) · last repo commit 2026-07-24 · 625 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 170,669 downloads/mo, #10,389 on PyPI
Alternatives
Verify before relying
pip install b2
b2 account authorize
b2 bucket list- Whether the 9 runtime dependencies (argcomplete, arrow, b2sdk, docutils, idna, platformdirs, rst2ansi, tabulate, tqdm) are all required for basic CLI operation or only for optional features.
- Performance characteristics and scalability limits for large-scale sync or replication operations.
What it is and what it does
B2 is a command-line tool that provides direct access to Backblaze B2 Cloud Storage capabilities. It lets you manage accounts, create and configure buckets, upload and download files, sync directories, and set up replication rules—all from the terminal or scripts. The tool uses the b2sdk library as its foundation and includes helpers like argcomplete for shell integration, tqdm for progress display, and tabulate for formatted output.
The package supports multiple installation methods (pip, Homebrew, Docker, standalone binaries) and uses an ApiVer versioning scheme to maintain backward compatibility. You can invoke it as `b2` for the latest interface or `b2v4` in scripts for a stable, long-term-support version. It requires Python 3.10 or later and stores authentication details locally in an SQLite file by default.
Use it for
- Automate backup and sync of local directories to B2 buckets in shell scripts or CI/CD pipelines.
- Manage B2 application keys and account permissions from the command line without a web interface.
- Upload or download individual files and monitor progress with built-in progress bars.
- Set up and manage replication rules between B2 buckets for disaster recovery.
- Integrate B2 storage operations into custom tooling via the CLI with shell autocomplete support.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has no known vulnerabilities, low install friction, and a permissive MIT license. It is production-stable and well-suited for developers who need programmatic or scripted access to B2 Cloud Storage. Install it if you use Backblaze B2 and want command-line control; skip it if you only need the web console or have no B2 account.
Install
b2 on PyPI
Before you install
Low install friction with a pure-Python wheel distribution. The package is actively maintained with a recent release and no known vulnerabilities. Requires Python 3.10 or later.
Requires Python 3.10 or later; B2 account credentials needed for authorization.
License in practice
MIT license permits commercial and private use with minimal restrictions, making it suitable for both personal and enterprise deployments.
Quickstart
pip install b2
b2 account authorize
b2 bucket listVerify before relying
- Whether the 9 runtime dependencies (argcomplete, arrow, b2sdk, docutils, idna, platformdirs, rst2ansi, tabulate, tqdm) are all required for basic CLI operation or only for optional features.
- Performance characteristics and scalability limits for large-scale sync or replication operations.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 9 packagesargcompletearrowb2sdkdocutilsidnaplatformdirsrst2ansitabulatetqdm |
| Maintenance | Actively maintained 67 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 170,669 / month, #10,389 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: Software Development :: Libraries |
Evidence: b2-4.7.1-py3-none-any.whl
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See also b2sdk · gsutil · cloudsmith-cli · storage3 · snowflake-cli · dda · alibabacloud-oss-v2 · minio · coscmd · awscurl