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.
npx skills add Aidas-dev/k8s-agent-skills --skill external-dnsgit clone --depth 1 https://github.com/Aidas-dev/k8s-agent-skillsWrote 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.
[](https://agentmods.dev/skills/aidas-dev/k8s-agent-skills/external-dns)<a href="https://agentmods.dev/skills/aidas-dev/k8s-agent-skills/external-dns"><img src="https://agentmods.dev/badge/skills/aidas-dev/k8s-agent-skills/external-dns/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.
<a href="https://agentmods.dev/skills/aidas-dev/k8s-agent-skills/external-dns"><img src="https://agentmods.dev/badge/skills/aidas-dev/k8s-agent-skills/external-dns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00043 | $0.01761 |
| Opus 5 | $0.00022 | $0.00881 |
| Sonnet 5 | $0.00009 | $0.00352 |
| Haiku 4.5 | $0.00004 | $0.00176 |
Grade A, and why
external-dns 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ExternalDNS
Overview
ExternalDNS synchronizes exposed Kubernetes Services, Ingresses, and Gateway API routes with DNS providers. It watches resources via the K8s watch API and creates/updates/deletes DNS records to match.
No CRDs. Controlled via CLI flags, sources, and provider-specific config.
Latest: chart 1.21.1, app v0.21.0.
Architecture
K8s Sources (Ingress, HTTPRoute, Service...)
→ ExternalDNS watches for changes
→ Resolves to DNS endpoints
→ Creates/updates/deletes DNS records (Cloudflare, Route53, etc.)
→ Registry (TXT records) tracks ownership
Sources
ExternalDNS queries one or more source types for DNS endpoints:
| Source | Flag | Supported |
|---|---|---|
| Ingress | --source=ingress |
✅ |
| Service (LoadBalancer) | --source=service |
✅ (no NodePort) |
| Gateway HTTPRoute | --source=gateway-httproute |
✅ |
| Gateway GRPCRoute | --source=gateway-grpcroute |
✅ |
| Gateway TLSRoute | --source=gateway-tlsroute |
✅ (v1alpha2) |
| Gateway TCPRoute | --source=gateway-tcproute |
✅ (experimental) |
| Gateway UDPRoute | --source=gateway-udproute |
✅ (experimental) |
| Istio Gateway | --source=istio-gateway |
✅ |
| Istio VirtualService | --source=istio-virtualservice |
✅ |
| CRD | --source=crd |
✅ (externaldns.k8s.io/v1alpha1) |
| Node | --source=node |
✅ |
| Pod | --source=pod |
✅ |
| OpenShift Route | --source=openshift-route |
✅ |
| Contour HTTPProxy | --source=contour-httpproxy |
✅ |
| Traefik Proxy | --source=traefik-proxy |
✅ |
Deployed sources: ingress, gateway-httproute.
Providers
ExternalDNS supports 25+ providers. Deployed: Cloudflare.
Cloudflare
Auth via API token (env var CF_API_TOKEN). Example values:
provider:
name: cloudflare
env:
- name: CF_API_TOKEN
valueFrom:
secretKeyRef:
name: cloudflare-credentials
key: api-token
extraArgs:
- --cloudflare-proxied
Cloudflare-specific flags:
| Flag | Description |
|---|---|
--cloudflare-proxied |
Enable Cloudflare proxy (orange cloud) — CDN, DDoS protection, SSL |
--cloudflare-dns-records-per-page=N |
Records per page (default 100, max 5000) |
--cloudflare-custom-hostnames |
Enable Cloudflare for SaaS Custom Hostnames |
--cloudflare-regional-services |
Restrict HTTPS decryption to specific regions |
--cloudflare-region-key |
Region key for regional services |
--cloudflare-record-comment |
Add comment to provisioned records (≤100/≤500 chars) |
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.
- 8d ago First seen · 186 lines · 43 tokens per session scan A 0b65d289ef91
external-dns is a skill published in the GitHub repository Aidas-dev/k8s-agent-skills (2 stars, last pushed 25d ago), licensed MIT. It adds 43 tokens to every session and 1,761 once invoked, about $0.0002 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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