loom-crossplane

loom-crossplane is a skill for Claude Code from cosmix/loom. It costs 15 tokens per session (9,328 once invoked), scanned D, original, MIT.

A skill for managing cloud infrastructure through Crossplane and Kubernetes. Crossplane lets platform teams describe cloud resources with Kubernetes-style configuration and provision them across providers such as AWS, GCP, or Azure.

In plain words
What is it for?
Use it to create platform APIs, resource definitions, compositions, claims, provider settings, and multi-cloud provisioning workflows.
Why use it?
It organizes reusable infrastructure building blocks and self-service provisioning instead of requiring each team to manage cloud resources manually.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: positional $N argument.

Good fit Use it to create platform APIs, resource definitions, compositions, claims, provider settings, and multi-cloud provisioning workflows.

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Install with agentmods
npx agentmods add skills/cosmix/loom/loom-crossplane
View source ↗ cosmix/loom
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 cosmix/loom --skill loom-crossplane
Clone the repo
git clone --depth 1 https://github.com/cosmix/loom

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 loom-crossplane

README.md
[![agentmods](https://agentmods.dev/badge/skills/cosmix/loom/loom-crossplane.svg)](https://agentmods.dev/skills/cosmix/loom/loom-crossplane)
Your own site
<a href="https://agentmods.dev/skills/cosmix/loom/loom-crossplane"><img src="https://agentmods.dev/badge/skills/cosmix/loom/loom-crossplane.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,328 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 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 $0.00015 $0.09328
Opus 5 $0.00008 $0.04664
Sonnet 5 $0.00003 $0.01866
Haiku 4.5 $0.00002 $0.00933

Measured 4d ago against content hash 4b436fc76af2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade D, and why

loom-crossplane scanned grade D with 3 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 4d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo mv crossplane /usr/local/bin/

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -sL https://raw.githubusercontent.com/crossplane/crossplane/master/install.sh | sh

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -sL https://raw.githubusercontent.com/crossplane/crossplane/master/install.sh | sh
skills/loom-crossplane/SKILL.md · 929 lines

How it starts

The opening of the file, as written. The whole thing — 929 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Crossplane Infrastructure Management

Crossplane extends Kubernetes to manage cloud infrastructure using declarative APIs. It enables platform teams to build internal cloud platforms with self-service capabilities.

Architecture Overview

Core Components

  1. Providers: Kubernetes controllers that provision infrastructure in external systems (AWS, GCP, Azure, etc.)
  2. Managed Resources (MRs): Custom resources representing external infrastructure (S3 buckets, RDS instances, etc.)
  3. Composite Resources (XRs): Higher-level abstractions composed of multiple managed resources
  4. Composite Resource Definitions (XRDs): Schemas defining composite resource types
  5. Compositions: Templates that map XRs to managed resources with transformation logic
  6. Claims: Namespace-scoped resources that provision composite resources for application teams
  7. Composition Functions: Extension points for complex transformation logic

Resource Hierarchy

Claim (namespace-scoped) -> Composite Resource (cluster-scoped) -> Managed Resources -> Cloud Infrastructure

Installation and Setup

Install Crossplane

# Add Crossplane Helm repository
helm repo add crossplane-stable https://charts.crossplane.io/stable
helm repo update

# Install Crossplane
# Composition functions are enabled by default since v1.14 — no feature-gate flag needed.
helm install crossplane \
  crossplane-stable/crossplane \
  --namespace crossplane-system \
  --create-namespace \
  --wait

# Verify installation
kubectl get pods -n crossplane-system

Install Crossplane CLI

# Install CLI for local development
curl -sL https://raw.githubusercontent.com/crossplane/crossplane/master/install.sh | sh
sudo mv crossplane /usr/local/bin/

# Verify CLI
crossplane --version

Provider Configuration

AWS Provider

v2 note: ControllerConfig (pkg.crossplane.io/v1alpha1) was deprecated in v1.11 and removed in Crossplane v2. Configure provider runtime with DeploymentRuntimeConfig (pkg.crossplane.io/v1beta1, beta-enabled by default since v1.14) referenced via runtimeConfigRef. Migrate any existing config with crossplane beta convert deployment-runtime controller-config.yaml -o deployment-runtime-config.yaml before upgrading.

Read the full file on GitHub · 929 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. 4d ago Changed · -28 tokens per session 4b436fc76af2
  2. 8d ago First seen · 929 lines · 43 tokens per session scan D 0f0073fba489

Subscribe to this mod's changes

loom-crossplane is a skill published in the GitHub repository cosmix/loom (54 stars, last pushed yesterday), licensed MIT. It adds 15 tokens to every session and 9,328 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it D with 3 findings (asks for root, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.