domain-cloud-native

domain-cloud-native is a skill for Claude Code from moeru-ai/auv. It costs 59 tokens per session (970 once invoked), scanned A, original, Apache-2.0.

A guide to design constraints for cloud-native applications, which run in containers or distributed services and may be moved or restarted automatically.

In plain words
What is it for?
It helps plan stateless services, environment-based configuration, monitoring, request tracing, health endpoints, clean shutdown, and container-friendly builds.
Why use it?
It connects requirements such as scaling, tracing, health checks, and graceful shutdown to application design decisions in Rust.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: installed under .agents/ (shared by several agents).

Good fit It helps plan stateless services, environment-based configuration, monitoring, request tracing, health endpoints…

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Install with agentmods
npx agentmods add skills/moeru-ai/auv/domain-cloud-native
View source ↗ moeru-ai/auv
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 moeru-ai/auv --skill domain-cloud-native
Clone the repo
git clone --depth 1 https://github.com/moeru-ai/auv

Made for: Claude Code.

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 domain-cloud-native

README.md
[![agentmods](https://agentmods.dev/badge/skills/moeru-ai/auv/domain-cloud-native.svg)](https://agentmods.dev/skills/moeru-ai/auv/domain-cloud-native)
Your own site
<a href="https://agentmods.dev/skills/moeru-ai/auv/domain-cloud-native"><img src="https://agentmods.dev/badge/skills/moeru-ai/auv/domain-cloud-native.svg" alt="Measured on agentmods" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 970 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 $0.00059 $0.00970
Opus 5 $0.00030 $0.00485
Sonnet 5 $0.00012 $0.00194
Haiku 4.5 $0.00006 $0.00097

Measured 7d ago against content hash 89b98395dd45, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

domain-cloud-native 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 7d 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.

.agents/skills/domain-cloud-native/SKILL.md · 167 lines

How it starts

The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cloud-Native Domain

Layer 3: Domain Constraints

Domain Constraints → Design Implications

Domain Rule Design Constraint Rust Implication
12-Factor Config from env Environment-based config
Observability Metrics + traces tracing + opentelemetry
Health checks Liveness/readiness Dedicated endpoints
Graceful shutdown Clean termination Signal handling
Horizontal scale Stateless design No local state
Container-friendly Small binaries Release optimization

Critical Constraints

Stateless Design

RULE: No local persistent state
WHY: Pods can be killed/rescheduled anytime
RUST: External state (Redis, DB), no static mut

Graceful Shutdown

RULE: Handle SIGTERM, drain connections
WHY: Zero-downtime deployments
RUST: tokio::signal + graceful shutdown

Observability

RULE: Every request must be traceable
WHY: Debugging distributed systems
RUST: tracing spans, opentelemetry export

Trace Down ↓

From constraints to design (Layer 2):

"Need distributed tracing"
    ↓ m12-lifecycle: Span lifecycle
    ↓ tracing + opentelemetry

"Need graceful shutdown"
    ↓ m07-concurrency: Signal handling
    ↓ m12-lifecycle: Connection draining

"Need health checks"
    ↓ domain-web: HTTP endpoints
    ↓ m06-error-handling: Health status

Key Crates

Purpose Crate
gRPC tonic
Kubernetes kube, kube-runtime
Docker bollard
Tracing tracing, opentelemetry
Metrics prometheus, metrics
Config config, figment
Health HTTP endpoints

Design Patterns

Pattern Purpose Implementation
gRPC services Service mesh tonic + tower
K8s operators Custom resources kube-runtime Controller
Observability Debugging tracing + OTEL
Health checks Orchestration /health, /ready
Config 12-factor Env vars + secrets

Read the full file on GitHub · 167 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. 7d ago First seen · 167 lines · 59 tokens per session scan A 89b98395dd45

Subscribe to this mod's changes

domain-cloud-native is a skill published in the GitHub repository moeru-ai/auv (25 stars, last pushed 3d ago), licensed Apache-2.0. It adds 59 tokens to every session and 970 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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