cloud-storage-identification

cloud-storage-identification is a skill for Claude Code from Goodsmileduck/claude-registry. It costs 80 tokens per session (1,714 once invoked), scanned C, original, MIT.

A procedure for identifying the actual provider behind S3-compatible object storage. S3-compatible means a service accepts the same general API as Amazon S3, even when it is hosted by another company such as Cloudflare, Google Cloud, or MinIO.

In plain words
What is it for?
Checking boto3, Terraform, rclone, or s3cmd configurations and determining whether storage uses AWS, another cloud provider, or a self-hosted service.
Why use it?
It prevents treating every S3-style connection as Amazon S3 and applying the wrong credentials, settings, or operational advice. The provider is identified from endpoints, environment variables, or infrastructure configuration.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the iac-skills plugin — 3 skills shipped together

Good fit Checking boto3, Terraform, rclone, or s3cmd configurations and determining whether storage uses AWS, another cloud provider, or a self-hosted service.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/goodsmileduck/claude-registry/cloud-storage-identification
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 Goodsmileduck/claude-registry --skill cloud-storage-identification
Clone the repo
git clone --depth 1 https://github.com/Goodsmileduck/claude-registry

Made for: Claude Code.

Or install iac-skills, the plugin that ships this one along with the rest of its 3 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.

agentmods badge for cloud-storage-identification

README.md
[![agentmods](https://agentmods.dev/badge/skills/goodsmileduck/claude-registry/cloud-storage-identification.svg)](https://agentmods.dev/skills/goodsmileduck/claude-registry/cloud-storage-identification)
Your own site
<a href="https://agentmods.dev/skills/goodsmileduck/claude-registry/cloud-storage-identification"><img src="https://agentmods.dev/badge/skills/goodsmileduck/claude-registry/cloud-storage-identification.svg" alt="Measured on agentmods" height="20"></a>
Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,714 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 original 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00080 $0.01714
Opus 5 $0.00040 $0.00857
Sonnet 5 $0.00016 $0.00343
Haiku 4.5 $0.00008 $0.00171

Measured 8d ago against content hash 3b4696f4206e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade C, and why

cloud-storage-identification 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 8d 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.

If endpoint is `None` / unset in code using boto3, the SDK defaults to AWS — confirm by looking at credentials (`AWS_PROFILE`, `~/.aws/credentials`).
plugins/iac-skills/skills/cloud-storage-identification/SKILL.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cloud Object Storage — provider identification

Prevents the AWS-default trap: assuming any aws_s3_bucket resource or boto3 call is hitting AWS S3 when it's actually GCS, DO Spaces, Hetzner, R2, B2, MinIO, or Azure Blob.

When to invoke

Symptoms:

  • A script uses boto3 or the AWS SDK but you don't see import boto3 paired with explicit AWS credentials.
  • A Terraform module references an aws_s3_bucket but the backend or provider block points elsewhere.
  • A rclone config has provider = Other or a custom endpoint.
  • The user says "the bucket" or "S3" without context.
  • An error message mentions an endpoint that doesn't end in amazonaws.com.

Failure mode this prevents: assuming AWS S3 and recommending AWS-specific tooling (IAM policies, S3 Lifecycle rules, CloudWatch metrics, presigned URL signing v4 quirks) when the actual target is a different provider with different auth, different features, and different bugs.

Step 1 — Identify the endpoint

Endpoint URL is the most reliable identifier. Look in: endpoint_url= kwarg, AWS_ENDPOINT_URL env, Terraform endpoints block, rclone config, s3cmd config, or the explicit URL in error messages.

Endpoint pattern Provider Notes
s3.<region>.amazonaws.com / <bucket>.s3.<region>.amazonaws.com AWS S3 Real deal. Region required in v4 signing.
s3-accelerate.amazonaws.com AWS S3 Transfer Acceleration Different perf profile, same API.
storage.googleapis.com Google Cloud Storage XML API is S3-ish but not full compat; native JSON API is preferred.
<region>.digitaloceanspaces.com DigitalOcean Spaces S3-compat. Missing some headers (e.g. x-amz-tagging partial).
<endpoint>.your-objectstorage.com (e.g. nbg1.your-objectstorage.com) Hetzner Object Storage Path-style only; virtual-hosted style not supported.
<account>.r2.cloudflarestorage.com Cloudflare R2 No egress fees, requires auto as region.
s3.<region>.backblazeb2.com Backblaze B2 (S3-compat API) Native B2 API also exists and is different.
<account>.blob.core.windows.net Azure Blob Not S3-compat — different SDK entirely.
<minio-host>:9000 or self-hosted IP/hostname MinIO or other self-hosted Behavior varies by version.

Read the full file on GitHub · 127 lines

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.

  1. 8d ago First seen · 127 lines · 80 tokens per session scan C 3b4696f4206e

Subscribe to this mod's changes

cloud-storage-identification is a skill published in the GitHub repository Goodsmileduck/claude-registry (1 stars, last pushed 1mo ago), licensed MIT. It adds 80 tokens to every session and 1,714 once invoked, about $0.0004 per session on Opus 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 2026-08-31.