nw-diagram

nw-diagram is a skill for Claude Code from nWave-ai/nWave. It costs 33 tokens per session (557 once invoked), scanned A, original, MIT.

A tool for creating architecture diagrams that show how a software system is organised. It supports the C4 model, which presents systems at context, container, and component levels, using Mermaid or PlantUML diagrams.

In plain words
What is it for?
Use it to document system boundaries, services, components, technology choices, and deployment or data relationships.
Why use it?
It makes system structure easier to explain to stakeholders, developers, and operations teams at the level of detail each group needs.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Good fit Use it to document system boundaries, services, components, technology choices, and deployment or data relationships.

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Install with agentmods
npx agentmods add skills/nwave-ai/nwave/nw-diagram
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 nWave-ai/nWave --skill nw-diagram
Clone the repo
git clone --depth 1 https://github.com/nWave-ai/nWave

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 nw-diagram

README.md
[![agentmods](https://agentmods.dev/badge/skills/nwave-ai/nwave/nw-diagram/github.svg)](https://agentmods.dev/skills/nwave-ai/nwave/nw-diagram)
Your own site
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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 nw-diagram

Your own site · 80×15
<a href="https://agentmods.dev/skills/nwave-ai/nwave/nw-diagram"><img src="https://agentmods.dev/badge/skills/nwave-ai/nwave/nw-diagram.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 557 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. 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 $0.00033 $0.00557
Opus 5 $0.00016 $0.00279
Sonnet 5 $0.00007 $0.00111
Haiku 4.5 $0.00003 $0.00056

Measured 6d ago against content hash 10383f2094c4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

nw-diagram 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 6d 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.

nWave/skills/nw-diagram/SKILL.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

NW-DIAGRAM: Architecture Diagram Generation

Wave: CROSS_WAVE | Agent: Morgan (nw-solution-architect) | Command: *create-diagrams

Overview

Generate architecture diagrams from design documents. Supports C4 model levels (context|container|component) in Mermaid|PlantUML|C4 format. Audience-appropriate: high-level context for stakeholders|component details for developers|deployment topology for operations.

Context Files Required

  • docs/product/architecture/brief.md (SSOT — component boundaries, technology stack, design decisions)

Workflow

  1. Read Context — Load docs/product/architecture/brief.md. Extract component boundaries, technology stack, and design decisions. Gate: architecture brief loaded.
  2. Resolve Configuration — Determine diagram_type (component|deployment|sequence|data|context), format (mermaid|plantuml|c4), level (context|container|component), and output_directory. Gate: all configuration parameters resolved.
  3. Invoke Agent — Delegate to @nw-solution-architect with *create-diagrams for {architecture-component}, passing context files and resolved configuration. Gate: agent invoked with all parameters.
  4. Validate Output — Verify diagrams render without syntax errors and files exist in output_directory. Gate: all success criteria pass.
  5. Handoff — Return deliverables to invoking agent. Gate: architecture diagrams available in configured format.

Success Criteria

  • Diagrams accurately represent current architecture
  • Audience-appropriate detail level applied
  • Diagrams render without syntax errors
  • Output files created in configured directory

Next Wave

Handoff To: {invoking-agent-returns-to-workflow} Deliverables: Architecture diagrams in configured format

Examples

Example 1: Generate C4 container diagram

/nw-diagram payment-service --diagram_type=component --format=mermaid --level=container

Morgan reads architecture docs and produces a Mermaid container diagram showing service boundaries, data stores, and external integrations.

Read the full file on GitHub · 56 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. 6d ago First seen · 56 lines · 33 tokens per session scan A 10383f2094c4

Subscribe to this mod's changes

nw-diagram is a skill published in the GitHub repository nWave-ai/nWave (610 stars, last pushed 4d ago), licensed MIT. It adds 33 tokens to every session and 557 once invoked, about $0.0002 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 2026-09-03.