Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
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.
[](https://agentmods.dev/skills/jansenanalytics/claudex/arch-diagram)<a href="https://agentmods.dev/skills/jansenanalytics/claudex/arch-diagram"><img src="https://agentmods.dev/badge/skills/jansenanalytics/claudex/arch-diagram.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00021 | $0.00452 |
| Opus 5 | $0.00010 | $0.00226 |
| Sonnet 5 | $0.00004 | $0.00090 |
| Haiku 4.5 | $0.00002 | $0.00045 |
Grade A, and why
arch-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 5d 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.
What it actually says
arch-diagram
Generate architecture diagrams from codebase analysis: Mermaid, PlantUML, or ASCII.
When to Use
- Visualizing system architecture
- Documenting component relationships
- Creating sequence diagrams
- Mapping dependencies from package.json or imports
- Generating diagrams for documentation or PRs
How It Works
- Point
dep-graph.shat a project to extract dependencies - Use
mermaid-gen.shto produce Mermaid diagram syntax - Use
ascii-diagram.shfor quick terminal-friendly box diagrams - Consult references for syntax help and diagram type selection
Scripts
| Script | Purpose |
|---|---|
dep-graph.sh |
Extract dependency graph from package.json or import statements |
mermaid-gen.sh |
Generate Mermaid diagram markup from components/relationships |
ascii-diagram.sh |
Generate ASCII box-and-arrow diagrams |
References
| File | Content |
|---|---|
mermaid-syntax.md |
Mermaid diagram syntax quick reference |
plantuml-syntax.md |
PlantUML syntax quick reference |
diagram-selection.md |
Guide for choosing the right diagram type |
Example Usage
# Extract deps from a Node.js project
bash scripts/dep-graph.sh --path /path/to/project --type node
# Generate a Mermaid flowchart
bash scripts/mermaid-gen.sh --type flowchart \
--components "API,Database,Cache,Queue" \
--relations "API->Database,API->Cache,API->Queue"
# Quick ASCII diagram
bash scripts/ascii-diagram.sh \
--components "Client,API Gateway,Auth Service,DB" \
--relations "Client->API Gateway,API Gateway->Auth Service,Auth Service->DB"
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.
- 5d ago First seen · 60 lines · 21 tokens per session scan A 747c9f63d4bb
arch-diagram is a skill published in the GitHub repository JansenAnalytics/claudex (5 stars, last pushed 2mo ago), licensed MIT. It adds 21 tokens to every session and 452 once invoked, about $0.0001 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 2026-08-31.
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