cdn-setup

cdn-setup is a skill for Claude Code, Codex from BagelHole/DevOps-Security-Agent-Skills. It costs 30 tokens per session (3,030 once invoked), scanned A, original, MIT.

A guide to using a content delivery network (CDN), which stores and serves website files from locations near visitors. It covers CloudFront, Cloudflare, and Fastly.

In plain words
What is it for?
Use it to configure global delivery of static files, cache invalidation, origin connections, TLS, DDoS protection, geographic routing, and edge-cached API responses.
Why use it?
It reduces the distance that images, scripts, stylesheets, and other content must travel, while also reducing work for the main server. It can add edge security and caching controls.

Skill for Claude CodeCodex

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

Good fit Use it to configure global delivery of static files, cache invalidation, origin connections, TLS, DDoS protection, geographic routing, and edge-cached API responses.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bagelhole/devops-security-agent-skills/cdn-setup
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 cdn-setup
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 cdn-setup

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/bagelhole/devops-security-agent-skills/cdn-setup"><img src="https://agentmods.dev/badge/skills/bagelhole/devops-security-agent-skills/cdn-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,030 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: 8 findings, up to medium

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 →

  • medium Data Exfiltration · line 201
    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 201
    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 207
    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 215
    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 238
    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 244
    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 250
    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 215
    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 $0.00030 $0.03030
Opus 5 $0.00015 $0.01515
Sonnet 5 $0.00006 $0.00606
Haiku 4.5 $0.00003 $0.00303

Measured 8d ago against content hash d94b72a47cc2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

cdn-setup 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 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.

Makes network callslowCapability

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

curl -X POST "https://api.cloudflare.com/client/v4/zones" \
infrastructure/networking/cdn-setup/SKILL.md · 359 lines

How it starts

The opening of the file, as written. The whole thing — 359 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CDN Setup

Configure content delivery networks for fast, reliable global asset delivery with proper caching, invalidation, and security.

When to Use

  • Serving static assets (JS, CSS, images, fonts) globally with low latency.
  • Offloading traffic from origin servers to reduce compute costs.
  • Adding TLS termination and DDoS protection at the edge.
  • Implementing geo-based routing or content restrictions.
  • Accelerating API responses with edge caching.

Prerequisites

  • Domain with DNS management access.
  • Origin server or S3/R2 bucket with content to serve.
  • AWS CLI configured (for CloudFront).
  • Cloudflare account with zone configured (for Cloudflare CDN).
  • Terraform 1.5+ (for infrastructure-as-code examples).

AWS CloudFront

Create a Distribution via CLI

# Create an S3 origin distribution with OAC (Origin Access Control)
aws cloudfront create-distribution --distribution-config '{
  "CallerReference": "my-site-'$(date +%s)'",
  "Comment": "Production site CDN",
  "Enabled": true,
  "Origins": {
    "Quantity": 1,
    "Items": [{
      "Id": "s3-origin",
      "DomainName": "my-bucket.s3.us-east-1.amazonaws.com",
      "OriginPath": "",
      "S3OriginConfig": {
        "OriginAccessIdentity": ""
      },
      "OriginAccessControlId": "E2QWRUHAPOMQZL"
    }]
  },
  "DefaultCacheBehavior": {
    "TargetOriginId": "s3-origin",
    "ViewerProtocolPolicy": "redirect-to-https",
    "AllowedMethods": {
      "Quantity": 2,
      "Items": ["GET", "HEAD"]
    },
    "CachePolicyId": "658327ea-f89d-4fab-a63d-7e88639e58f6",
    "Compress": true
  },
  "DefaultRootObject": "index.html",
  "PriceClass": "PriceClass_100",
  "ViewerCertificate": {
    "ACMCertificateArn": "arn:aws:acm:us-east-1:123456789:certificate/abc-123",
    "SSLSupportMethod": "sni-only",
    "MinimumProtocolVersion": "TLSv1.2_2021"
  },
  "Aliases": {
    "Quantity": 1,
    "Items": ["www.example.com"]
  },
  "CustomErrorResponses": {
    "Quantity": 1,
    "Items": [{
      "ErrorCode": 404,
      "ResponseCode": "200",
      "ResponsePagePath": "/index.html",
      "ErrorCachingMinTTL": 10
    }]
  }
}'

Read the full file on GitHub · 359 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 · 359 lines · 30 tokens per session scan A d94b72a47cc2

Subscribe to this mod's changes

cdn-setup is a skill published in the GitHub repository BagelHole/DevOps-Security-Agent-Skills (1,084 stars, last pushed 3mo ago), licensed MIT. It adds 30 tokens to every session and 3,030 once invoked, about $0.0002 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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