What is cf-networking-and-edge?

A guide to Cloudflare networking services, including DNS, CDN caching, load balancing, private tunnels, and connections between networks. Cloudflare is a network service that can sit between users and your servers.

Use it to configure authoritative DNS, DNSSEC, cache and purge rules, load balancing, Argo routing, TCP or UDP access through Spectrum, Cloudflare Tunnel, and private network connections.

It helps expose services safely, control how traffic is routed and cached, connect private infrastructure without opening inbound firewall ports, and protect managed domains.

cf-networking-and-edge — Skill for Claude Code by jsgerman-oss

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 jsgerman-oss/blackrim-nimbus-skills --skill cf-networking-and-edge

Clone the repo

git clone --depth 1 https://github.com/jsgerman-oss/blackrim-nimbus-skills

Made for: Claude Code.

Or install cloud-cloudflare, the plugin that ships this one along with the rest of its 6 skills, 1 command, 2 agents.

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/jsgerman-oss/blackrim-nimbus-skills/cf-networking-and-edge/github.svg)](https://agentmods.dev/skills/jsgerman-oss/blackrim-nimbus-skills/cf-networking-and-edge)

Your own site

<a href="https://agentmods.dev/skills/jsgerman-oss/blackrim-nimbus-skills/cf-networking-and-edge"><img src="https://agentmods.dev/badge/skills/jsgerman-oss/blackrim-nimbus-skills/cf-networking-and-edge/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/jsgerman-oss/blackrim-nimbus-skills/cf-networking-and-edge"><img src="https://agentmods.dev/badge/skills/jsgerman-oss/blackrim-nimbus-skills/cf-networking-and-edge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,678 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00065	$0.02678
Opus 5	$0.00032	$0.01339
Sonnet 5	$0.00013	$0.00536
Haiku 4.5	$0.00006	$0.00268

Measured 12d ago against content hash 268f9b3be92a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

cf-networking-and-edge scanned grade A with 0 findings 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 12d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

cloud-cloudflare/skills/cf-networking-and-edge/SKILL.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cloudflare Networking and Edge

When to use

Setting up or migrating authoritative DNS to Cloudflare.
Configuring CDN cache rules, transform rules, or purge strategies.
Standing up load balancing with geo, latency, or weighted routing.
Reducing origin latency with Argo Smart Routing.
Exposing TCP/UDP services (beyond HTTP) via Spectrum.
Securely connecting a private server or network to Cloudflare without opening inbound firewall rules (Cloudflare Tunnel).
Connecting branch offices or cloud VPCs to Cloudflare's backbone (Magic WAN / Magic Transit).

DNS (authoritative)

Cloudflare is the authoritative DNS resolver for zones it manages. DNS changes propagate globally within seconds.

Defaults

Proxy status (orange cloud): enable for any A/AAAA/CNAME record you want behind Cloudflare's CDN, WAF, and DDoS protection. Leave unproxied (grey cloud) only for records that must resolve to the origin IP directly (mail servers, SFTP, internal tooling).
DNSSEC: enable for every zone. Cloudflare manages signing automatically after you add the DS record to the registrar. DNSSEC prevents on-path resolver cache poisoning.
CAA records: add CAA records specifying your CA to prevent misissued certificates (issue, issuewild, iodef).
TTL: for proxied records, Cloudflare overrides TTL to 300 s regardless of your setting — that is intentional. For unproxied records, set TTL to 300 s during migrations; raise to 3600 s+ once stable.
API-managed DNS: use Terraform (cloudflare_record resource) or Wrangler for DNS records that are part of a Worker deployment. Do not mix console clicks and IaC for the same zone.

CDN — Cache Rules and Transform Rules

Cache rules

Cloudflare's Cache Rules (zone-level) replace the older Page Rules — use Cache Rules for all new configurations. Page Rules are a legacy feature and will be deprecated.
Set cache eligibility explicitly per path: cache everything for static assets; bypass cache for authenticated API endpoints.
Edge cache TTL: how long Cloudflare holds the response. Set via Cache-Control: s-maxage=<seconds> from origin, or override with a Cache Rule.
Browser cache TTL: how long the client holds the response. Do not let Cloudflare's default override origin Cache-Control unless you have a specific reason.
Cache keys: vary on headers (Accept-Encoding, Accept-Language) only if your origin actually serves different responses per header; unnecessary variation fragments the cache.

Read the full file on GitHub · 171 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.

12d ago First seen · 171 lines · 65 tokens per session scan A 268f9b3be92a

Subscribe to this mod's changes

cf-networking-and-edge is a skill published in the GitHub repository jsgerman-oss/blackrim-nimbus-skills (8 stars, last pushed 26d ago), licensed MIT. It adds 65 tokens to every session and 2,678 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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