What is backblaze-coder?

Coding guidance for Backblaze B2, a cloud service for storing files, and its command-line tool. It covers managing storage buckets, access keys, uploads, retention rules, and storage through S3-compatible interfaces.

Use it to create and manage B2 buckets, set up application keys, upload files, configure lifecycle rules, and work with B2 through OpenTofu, Terraform, the B2 CLI, or S3-compatible storage APIs.

It helps avoid guessing how to connect infrastructure configuration and command-line operations to B2. It brings the main setup and file-management tasks together.

backblaze-coder — Skill for Claude Code by majesticlabs-dev

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add majesticlabs-dev/majestic-marketplace --skill backblaze-coder

Clone the repo

git clone --depth 1 https://github.com/majesticlabs-dev/majestic-marketplace

Made for: Claude Code.

Or install majestic-devops, the plugin that ships this one along with the rest of its 15 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/majesticlabs-dev/majestic-marketplace/backblaze-coder/github.svg)](https://agentmods.dev/skills/majesticlabs-dev/majestic-marketplace/backblaze-coder)

Your own site

<a href="https://agentmods.dev/skills/majesticlabs-dev/majestic-marketplace/backblaze-coder"><img src="https://agentmods.dev/badge/skills/majesticlabs-dev/majestic-marketplace/backblaze-coder/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/majesticlabs-dev/majestic-marketplace/backblaze-coder"><img src="https://agentmods.dev/badge/skills/majesticlabs-dev/majestic-marketplace/backblaze-coder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,735 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00051	$0.01735
Opus 5.5	$0.00020	$0.00694
Sonnet 5.5	$0.00010	$0.00347
Haiku 4.5	$0.00005	$0.00173

Measured 2mo ago against content hash 10a5aa6586df, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

backblaze-coder scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Reaches for credential fileshighPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

# ~/.aws/credentials - use B2 applicationKeyId / applicationKey

plugins/majestic-devops/skills/backblaze-coder/SKILL.md · 272 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 272 lines · 51 tokens per session scan C 10a5aa6586df

Subscribe to this mod's changes

backblaze-coder is a skill published in the GitHub repository majesticlabs-dev/majestic-marketplace (50 stars, last pushed 1mo ago), with no licence file. It adds 51 tokens to every session and 1,735 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 1 finding (reaches for credential files). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Backend and APIs Cloud DevOps and cloud

backblaze-coder next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
backblaze-codermajesticlabs-dev/majestic-marketplace	Skill	50	1mo ago	none	C	51	Claude Code
stripe-projectsNousResearch/hermes-agent	Skill	261k	yesterday	MIT	A	15	Claude Code, Codex
alchemy-providerpingdotgg/t3code	Skill	48k	yesterday	MIT	A	153	Claude Code, Codex
django-storages-s3Jeffallan/claude-skills	Skill	12k	7d ago	MIT	A	138	Claude Code
websocket-engineerJeffallan/claude-skills	Skill	12k	7d ago	MIT	A	36	Claude Code
azure-eventhub-dotnetmicrosoft/skills	Skill	3.2k	yesterday	MIT	A	94	Claude Code
azure-mgmt-botservice-dotnetmicrosoft/skills	Skill	3.2k	yesterday	MIT	A	78	Claude Code