llm-evaluation-system: Skill for Claude Code

.claude/skills/aws-architecture/SKILL.md

aws-architecture is a skill for Claude Code from awslabs/llm-evaluation-system. It costs 109 tokens per session (1,885 once invoked), scanned A, original, Apache-2.0.

A procedure for creating AWS architecture diagrams with official AWS service icons. AWS is Amazon's cloud platform, and an architecture diagram shows how its services connect.

In plain words
What is it for?
Use it to fetch and cache AWS icons, lay out services and connections in SVG, and render the finished diagram as a PNG.
Why use it?
It gives diagrams consistent layout and controlled arrow paths. This reduces crossed connectors and lines running through labels, which can make infrastructure designs hard to read.

Skill for Claude Code ✓ vendor

Written for Claude Code: disable-model-invocation in frontmatter.

This is awslabs/llm-evaluation-system's own configuration. It tells Claude Code how to work on llm-evaluation-system itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything llm-evaluation-system configures →

About the project

LLM Evaluation System is an agent-guided platform for evaluating language models and agents, generating datasets and configuring multiple judges from natural-language requests before producing an analysis report. It is for comparing model responses, testing agents, and creating document-grounded evaluation data.

awslabs/llm-evaluation-system · 23 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to awslabs/llm-evaluation-system. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/awslabs/llm-evaluation-system/main/.claude/skills/aws-architecture/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/awslabs/llm-evaluation-system

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 aws-architecture

README.md
[![agentmods](https://agentmods.dev/badge/skills/awslabs/llm-evaluation-system/aws-architecture/github.svg)](https://agentmods.dev/skills/awslabs/llm-evaluation-system/aws-architecture)
Your own site
<a href="https://agentmods.dev/skills/awslabs/llm-evaluation-system/aws-architecture"><img src="https://agentmods.dev/badge/skills/awslabs/llm-evaluation-system/aws-architecture/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 aws-architecture

Your own site · 80×15
<a href="https://agentmods.dev/skills/awslabs/llm-evaluation-system/aws-architecture"><img src="https://agentmods.dev/badge/skills/awslabs/llm-evaluation-system/aws-architecture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 109 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,885 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00109 $0.01885
Opus 5 $0.00055 $0.00942
Sonnet 5 $0.00022 $0.00377
Haiku 4.5 $0.00011 $0.00188

Measured 9d ago against content hash 9e264de4253e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

aws-architecture scanned grade A with 1 finding 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 9d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/fetch_icons.sh, scripts/find_icon.py, scripts/render.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

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

- `scripts/fetch_icons.sh` needs `curl` + `unzip`.
.claude/skills/aws-architecture/SKILL.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AWS Architecture Diagram Skill

Build clean, AWS-poster-style architecture diagrams using the official AWS Architecture Icons, authored as a hand-laid-out SVG (inside an HTML wrapper) and rendered to PNG via headless Chromium. This is the approach that reliably avoids the two things that wreck these diagrams: crossing arrows and lines cutting through text.

Why SVG (not draw.io, not HTML/CSS divs)

  • The hard part of an architecture diagram is the connectors (routed arrows between nodes). SVG <path> with explicit waypoints + a <marker> arrowhead is the only medium where you control every bend, so lines route through gaps and never cross labels.
  • draw.io's auto-router makes uncontrollable diagonal crossings; CSS has no line primitive (you'd fake arrows with rotated divs — looks bad).
  • One SVG coordinate system means icons and line endpoints align exactly, and paint order (lines first, icons second) tucks arrows neatly behind icons.

Workflow

  1. Fetch icons (once): bash scripts/fetch_icons.sh — downloads + caches the official AWS icon package under cache/aws-icons/. Idempotent.
  2. Resolve each service icon: python3 scripts/find_icon.py cache <name> prints the best-match SVG path (e.g. cloudfront, cognito, elastic kubernetes, rds, bedrock, simple storage, elastic load balancing). Use --list <name> to see candidates. Gotcha: general/resource icons ship in _Light (dark glyph) and _Dark (white glyph) variants — on a white canvas always use _Light (the resolver already prefers it). The "User" actor icon is Res_User_48_Light.svg.
  3. Author the SVG (see Template + Layout rules below). Reference icons with <image href="file:///abs/path/icon.svg" .../> while iterating.
  4. Render: python3 scripts/render.py diagram.html out.png (screenshots the <svg id="d">). Add --scale 2 for crisp output (default 2).
  5. CRITICAL — self-critique loop: actually Read the rendered PNG, list the worst flaw (a line crossing text, a label collision, clipping, an invisible/white icon, an off-center trunk), fix that ONE thing, re-render. Repeat until clean. This loop is the skill — do not stop after one render. Typically 4-6 passes.
  6. Finalize self-contained: once good, run python3 scripts/render.py diagram.html out.png --embed to inline the icon SVGs as base64 data URIs (so the source has no file:// deps), then render the final PNG. Commit the .html source + PNG together.

Read the full file on GitHub · 127 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. 9d ago First seen · 127 lines · 109 tokens per session scan A 9e264de4253e

Subscribe to this mod's changes

aws-architecture is a skill published in the GitHub repository awslabs/llm-evaluation-system (23 stars, last pushed today), licensed Apache-2.0. It adds 109 tokens to every session and 1,885 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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