alibaba-networking-and-edge

alibaba-networking-and-edge is a skill for Claude Code from jsgerman-oss/blackrim-nimbus-skills. It costs 91 tokens per session (3,000 once invoked), scanned A, original, MIT.

A guide for designing and checking Alibaba Cloud networks, including private networks, subnets, routing, firewalls, load balancers, and internet-facing protections.

In plain words
What is it for?
Use it when creating or extending a VPC, exposing services, connecting regions or company networks, or reviewing CDN, web firewall, DDoS, and security-group settings.
Why use it?
It helps avoid unsafe access rules, poor network layouts, cross-region connection problems, and unexpected traffic charges.

Skill for Claude Code

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

Part of the cloud-alibaba plugin — 6 skills, 1 command, 2 agents shipped together

Good fit Use it when creating or extending a VPC, exposing services, connecting regions or company networks, or reviewing CDN, web firewall, DDoS, and security-group settings.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jsgerman-oss/blackrim-nimbus-skills/alibaba-networking-and-edge
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 alibaba-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-alibaba, the plugin that ships this one along with the rest of its 6 skills, 1 command, 2 agents.

Wrote this? Show the measurements

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README.md
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Your own site
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Your own site · 80×15
<a href="https://agentmods.dev/skills/jsgerman-oss/blackrim-nimbus-skills/alibaba-networking-and-edge"><img src="https://agentmods.dev/badge/skills/jsgerman-oss/blackrim-nimbus-skills/alibaba-networking-and-edge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 91 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,000 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00091 $0.03000
Opus 5 $0.00046 $0.01500
Sonnet 5 $0.00018 $0.00600
Haiku 4.5 $0.00009 $0.00300

Measured 12d ago against content hash 12ebec67f6d1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

alibaba-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-alibaba/skills/alibaba-networking-and-edge/SKILL.md · 174 lines

How it starts

The opening of the file, as written. The whole thing — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Alibaba Networking and Edge

When to use

  • Designing a new VPC or extending an existing one into additional zones.
  • Exposing an internal service to the internet or to another VPC / region.
  • Connecting multiple VPCs across regions or to on-premises with CEN.
  • Tuning TLS, WAF, CDN, or DDoS posture at the edge.
  • Auditing east-west Security Group rules for over-permissive access.
  • Tracking down NAT Gateway data-processing charges or cross-zone traffic costs.

VPC layout — the production default

  • One VPC per environment per region (dev / stage / prod). A single account typically holds the China-region VPC and a separate account holds the International-region VPC — they cannot be peered or joined in the same CEN across the China/International boundary.
  • CIDR: /16 per VPC; /19 or /20 per VSwitch. Leave non-overlapping address space for future CEN attachment.
  • VSwitches per zone, across at least 2 availability zones (3 where the region supports it):
    • public zone VSwitches — only for ALB / NLB / NAT Gateway.
    • private zone VSwitches — application compute (ECS, ACK pods, FC VPC mode).
    • isolated zone VSwitches — databases, internal-only services (RDS, Redis, PolarDB).
  • IPv6: enable at VPC creation if any international-facing service or IPv6-mandated workload is planned. Retrofitting IPv6 to an existing VPC is possible but disruptive.
  • VPC Flow Log: enable for all production VPCs; ship to SLS (Simple Log Service) for query. At minimum capture REJECT flows; enable ALL for forensics-ready accounts.

VSwitch and Security Group discipline

  • Security Groups: stateful; the primary east-west control. Reference groups by Group ID in inbound rules (sg-app-tiersg-db-tier:3306); never use raw CIDR for intra-VPC references.
  • An ENI (Elastic Network Interface) can hold up to 5 Security Groups. Bind roles precisely (web, app, db, cache) rather than one catch-all group.
  • No 0.0.0.0/0 inbound on any Security Group protecting a database, cache, or application instance.
  • No 0.0.0.0/0 inbound on port 22: use Cloud Assistant for shell access; disable SSH inbound entirely.
  • Route tables: one custom route table per subnet tier; avoid the default route table for anything other than the public VSwitch tier.

Read the full file on GitHub · 174 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. 12d ago First seen · 174 lines · 91 tokens per session scan A 12ebec67f6d1

Subscribe to this mod's changes

alibaba-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 91 tokens to every session and 3,000 once invoked, about $0.0005 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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