landing-zones

landing-zones is a skill for Claude Code from acedergren/oci-agent-skills. It costs 62 tokens per session (3,864 once invoked), scanned A, original, MIT.

A guide to designing OCI Landing Zones, which are organized starting structures for cloud accounts, identity, networks, security, and governance. It covers setups for multiple tenants, teams, or environments.

In plain words
What is it for?
Use it to design multi-tenant OCI environments, compartment hierarchies, hub-and-spoke or multi-network layouts, IAM structures, tagging rules, Security Zones, and CIS-aligned foundations.
Why use it?
It helps prevent unclear ownership, unsafe permissions, poor network layouts, and inconsistent governance in Oracle Cloud. It provides OCI-specific patterns where general cloud knowledge may not be enough.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument.

Part of the oci-skills plugin — 13 skills shipped together

Good fit Use it to design multi-tenant OCI environments, compartment hierarchies, hub-and-spoke or multi-network layouts, IAM structures, tagging rules, Security Zones, and CIS-aligned foundations.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/acedergren/oci-agent-skills/landing-zones
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 acedergren/oci-agent-skills --skill landing-zones
Clone the repo
git clone --depth 1 https://github.com/acedergren/oci-agent-skills

Made for: Claude Code.

Or install oci-skills, the plugin that ships this one along with the rest of its 13 skills.

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 landing-zones

README.md
[![agentmods](https://agentmods.dev/badge/skills/acedergren/oci-agent-skills/landing-zones/github.svg)](https://agentmods.dev/skills/acedergren/oci-agent-skills/landing-zones)
Your own site
<a href="https://agentmods.dev/skills/acedergren/oci-agent-skills/landing-zones"><img src="https://agentmods.dev/badge/skills/acedergren/oci-agent-skills/landing-zones/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 landing-zones

Your own site · 80×15
<a href="https://agentmods.dev/skills/acedergren/oci-agent-skills/landing-zones"><img src="https://agentmods.dev/badge/skills/acedergren/oci-agent-skills/landing-zones.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,864 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 $0.00062 $0.03864
Opus 5 $0.00031 $0.01932
Sonnet 5 $0.00012 $0.00773
Haiku 4.5 $0.00006 $0.00386

Measured 12d ago against content hash 86d447f18197, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

landing-zones 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.

skills/landing-zones/SKILL.md · 441 lines

How it starts

The opening of the file, as written. The whole thing — 441 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OCI Landing Zones - Expert Architecture

⚠️ OCI Landing Zone Knowledge Gap

You don't know OCI Landing Zone patterns and tooling.

Your training data has limited and outdated knowledge of:

  • OCI Landing Zone reference architectures (updated quarterly)
  • Resource Manager stacks for landing zones
  • Compartment design patterns and governance
  • Security Zones and CIS Foundation compliance
  • Multi-tenancy patterns (SaaS, multi-environment)
  • Landing Zone Terraform modules and best practices

When landing zone design is needed:

  1. Use patterns and CLI commands from this skill's references
  2. Do NOT guess compartment hierarchies or network topologies
  3. Do NOT assume IAM policy structures
  4. Load landing-zone-cli.md for deployment operations

What you DO know:

  • General cloud architecture concepts
  • Networking principles (subnets, routing, firewalls)
  • IAM concepts (users, groups, policies)

This skill provides OCI-specific landing zone patterns that differ from AWS/Azure/GCP.


🚨 Top 10 OCI Bad Practices - Solved by Landing Zones

Why Landing Zones Matter

Without a proper Landing Zone, organizations commonly make these critical mistakes. OCI Landing Zones solve all 10:

# Bad Practice Impact Landing Zone Solution
1 Using a couple of generic compartments (or no compartments) No governance, cost allocation impossible, blast radius = entire tenancy Hierarchical compartments: Network/Security/Workloads structure with policy inheritance
2 Using Administrator group for daily operations No least privilege, audit trail useless, compliance violations Granular IAM policies: Per-compartment, per-role policies with principle of least privilege
3 Internet breakout from spoke networks Egress cost waste ($3k-5k/month), no egress filtering, data exfiltration risk Hub-spoke topology: Centralized egress via NAT/Firewall in hub VCN
4 Poor network segmentation Dev can access prod, lateral movement in breach, no environment isolation Separate compartments + VCNs: Dev/Test/Prod isolation with Security Zones
5 Internet-wide open ports (22, 3389, 8080) Direct attack surface, brute force attempts, breach entry point Security Lists/NSGs: Default deny, explicit allow only from bastion/VPN
6 Default security rules and route tables Overly permissive, not aligned to architecture, security drift IaC-managed rules: Explicit, version-controlled, CIS Benchmark aligned
7 Limited use of OCI security services Manual security, no proactive detection, violations found after breach Integrated security: Cloud Guard, Security Zones, VSS, OSMS, NFW, WAF enabled by default
8 Creating your own Terraform modules Reinventing wheel, unmaintained, no CIS compliance, inconsistent patterns Official OCI modules: Battle-tested, Oracle-maintained, CIS certified
9 Public exposure of services (buckets, databases, compute with public IPs) Data breaches, compliance violations, unauthorized access Security Zones: Deny public IPs, deny public buckets, encryption enforced
10 No logging, monitoring, notifications Blind to incidents, no audit trail, compliance failures, long MTTR Observability stack: VCN Flow Logs, Audit Logs, Cloud Guard, Alarms, Notifications

Read the full file on GitHub · 441 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 441 lines · 62 tokens per session scan A 86d447f18197

Subscribe to this mod's changes

landing-zones is a skill published in the GitHub repository acedergren/oci-agent-skills (20 stars, last pushed 4mo ago), licensed MIT. It adds 62 tokens to every session and 3,864 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 2026-08-30.

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