cloudflare-r2

cloudflare-r2 is a skill for Claude Code, Codex from BagelHole/DevOps-Security-Agent-Skills. It costs 29 tokens per session (2,467 once invoked), scanned A, original, MIT.

Cloudflare R2 is an S3-compatible service for storing files such as uploads, media, backups, and static assets. It also supports bucket lifecycle settings and signed URLs, which are temporary links for controlled file access.

In plain words
What is it for?
Use it to create and manage buckets, upload and retrieve objects, set retention rules, serve files, and generate signed download links.
Why use it?
It gives applications file storage without managing storage servers and can reduce costs when many files are downloaded. Its S3 compatibility also makes it easier to move between storage providers.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to create and manage buckets, upload and retrieve objects, set retention rules, serve files, and generate signed download links.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bagelhole/devops-security-agent-skills/cloudflare-r2
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 BagelHole/DevOps-Security-Agent-Skills --skill cloudflare-r2
Clone the repo
git clone --depth 1 https://github.com/BagelHole/DevOps-Security-Agent-Skills

Made for: Claude Code, Codex.

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 cloudflare-r2

README.md
[![agentmods](https://agentmods.dev/badge/skills/bagelhole/devops-security-agent-skills/cloudflare-r2/github.svg)](https://agentmods.dev/skills/bagelhole/devops-security-agent-skills/cloudflare-r2)
Your own site
<a href="https://agentmods.dev/skills/bagelhole/devops-security-agent-skills/cloudflare-r2"><img src="https://agentmods.dev/badge/skills/bagelhole/devops-security-agent-skills/cloudflare-r2/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.

agentmods 80×15 button for cloudflare-r2

Your own site · 80×15
<a href="https://agentmods.dev/skills/bagelhole/devops-security-agent-skills/cloudflare-r2"><img src="https://agentmods.dev/badge/skills/bagelhole/devops-security-agent-skills/cloudflare-r2.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,467 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 16 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Tool Misuse · line 111
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • medium MCP Rug Pull · line 35
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 38
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 41
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 44
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 51
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 54
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 59
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 62
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 65
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium Data Exfiltration · line 96
    Data is uploaded to cloud storage (S3 / GCS / Azure Blob). This may be a legitimate backup or exfiltration to an external bucket. Manual review is recommended.
    Fix: Verify the destination bucket is trusted and owned by you. Never upload credentials, secrets, or workspace contents to external or unverified cloud storage.
  • medium Data Exfiltration · line 101
    Data is uploaded to cloud storage (S3 / GCS / Azure Blob). This may be a legitimate backup or exfiltration to an external bucket. Manual review is recommended.
    Fix: Verify the destination bucket is trusted and owned by you. Never upload credentials, secrets, or workspace contents to external or unverified cloud storage.
  • medium Data Exfiltration · line 130
    Data is uploaded to cloud storage (S3 / GCS / Azure Blob). This may be a legitimate backup or exfiltration to an external bucket. Manual review is recommended.
    Fix: Verify the destination bucket is trusted and owned by you. Never upload credentials, secrets, or workspace contents to external or unverified cloud storage.
  • medium Data Exfiltration · line 281
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 281
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 306
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
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 $0.00029 $0.02467
Opus 5 $0.00015 $0.01234
Sonnet 5 $0.00006 $0.00493
Haiku 4.5 $0.00003 $0.00247

Measured 7d ago against content hash e591a9307ef7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

cloudflare-r2 scanned grade A 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 7d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

async fetch(request: Request, env: Env): Promise<Response> {
infrastructure/cloudflare/cloudflare-r2/SKILL.md · 338 lines

How it starts

The opening of the file, as written. The whole thing — 338 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cloudflare R2

S3-compatible object storage with zero egress fees, built on Cloudflare's global network.

When to Use

  • Storing user uploads, media files, backups, or static assets.
  • Replacing AWS S3 to eliminate egress costs for read-heavy workloads.
  • Serving files at the edge via Workers or public bucket access.
  • Building multi-cloud storage that avoids vendor lock-in (S3 API compatible).
  • Storing ML model artifacts, training data, or inference results.

Prerequisites

  • Cloudflare account with R2 enabled (dashboard > R2 > subscribe).
  • Wrangler CLI v3+ installed: npm install -g wrangler.
  • Authenticated via wrangler login or CLOUDFLARE_API_TOKEN.
  • For S3 API access: R2 API token created under R2 > Manage R2 API Tokens.

Bucket Management with Wrangler

Create and List Buckets

# Create a new bucket
npx wrangler r2 bucket create app-assets

# Create a bucket in a specific region (hint for data locality)
npx wrangler r2 bucket create eu-uploads --location=eu

# List all buckets
npx wrangler r2 bucket list

# Delete an empty bucket
npx wrangler r2 bucket delete old-bucket

Object Operations

# Upload a single file
npx wrangler r2 object put app-assets/images/logo.png --file=./logo.png

# Upload with content type
npx wrangler r2 object put app-assets/data/report.json \
  --file=./report.json \
  --content-type="application/json"

# Download an object
npx wrangler r2 object get app-assets/images/logo.png --file=./downloaded-logo.png

# Delete an object
npx wrangler r2 object delete app-assets/images/old-logo.png

# Get object metadata
npx wrangler r2 object head app-assets/images/logo.png

S3-Compatible API Access

R2 supports the S3 API, so existing tools (AWS CLI, boto3, s3cmd) work out of the box.

Generate R2 API Tokens

  1. Go to R2 > Manage R2 API Tokens > Create API token.
  2. Select permissions: Object Read & Write, or Object Read only.
  3. Scope to specific buckets if possible.
  4. Save the Access Key ID and Secret Access Key.

Read the full file on GitHub · 338 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. 7d ago First seen · 338 lines · 29 tokens per session scan A e591a9307ef7

Subscribe to this mod's changes

cloudflare-r2 is a skill published in the GitHub repository BagelHole/DevOps-Security-Agent-Skills (1,071 stars, last pushed 3mo ago), licensed MIT. It adds 29 tokens to every session and 2,467 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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