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.
npx skills add aj-geddes/useful-ai-prompts --skill architecture-diagramsgit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote 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/aj-geddes/useful-ai-prompts/architecture-diagrams)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/architecture-diagrams"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/architecture-diagrams/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.
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/architecture-diagrams"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/architecture-diagrams.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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 | $0.00041 | $0.00689 |
| Opus 5 | $0.00020 | $0.00345 |
| Sonnet 5 | $0.00008 | $0.00138 |
| Haiku 4.5 | $0.00004 | $0.00069 |
Grade A, and why
architecture-diagrams 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 12d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- architecture-diagrams — 89% identical, 12 lines differ
How it starts
The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Architecture Diagrams
Table of Contents
Overview
Create clear, maintainable architecture diagrams using code-based diagramming tools like Mermaid and PlantUML for system design, data flows, and technical documentation.
When to Use
- System architecture documentation
- C4 model diagrams
- Data flow diagrams
- Sequence diagrams
- Component relationships
- Deployment diagrams
- Infrastructure architecture
- Microservices architecture
- Database schemas (visual)
- Integration patterns
Quick Start
Minimal working example:
graph TB
subgraph "Client Layer"
Web[Web App]
Mobile[Mobile App]
CLI[CLI Tool]
end
subgraph "API Gateway Layer"
Gateway[API Gateway<br/>Rate Limiting<br/>Authentication]
end
subgraph "Service Layer"
Auth[Auth Service]
User[User Service]
Order[Order Service]
Payment[Payment Service]
Notification[Notification Service]
end
subgraph "Data Layer"
UserDB[(User DB<br/>PostgreSQL)]
OrderDB[(Order DB<br/>PostgreSQL)]
Cache[(Redis Cache)]
Queue[Message Queue<br/>RabbitMQ]
end
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| System Architecture Diagram | System Architecture Diagram |
| Sequence Diagram | Sequence Diagram |
| C4 Context Diagram | C4 Context Diagram |
| Component Diagram | Component Diagram |
| Deployment Diagram | Deployment Diagram |
| Data Flow Diagram | Data Flow Diagram |
| Class Diagram | Class Diagram |
| Component Diagram | Component Diagram |
| Deployment Diagram | Deployment Diagram |
What ships with it
11 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.
- references/c4-context-diagram.md 818 B
- references/class-diagram.md 783 B
- references/component-diagram-2.md 876 B
- references/component-diagram.md 1.1 KB
- references/data-flow-diagram.md 649 B
- references/deployment-diagram-2.md 839 B
- references/deployment-diagram.md 1.3 KB
- references/sequence-diagram.md 982 B
- references/system-architecture-diagram.md 1.3 KB
- scripts/validate-schema.sh 426 B runs code
- templates/migration-template.sql 302 B
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.
- 12d ago First seen · 111 lines · 41 tokens per session scan A 3896b896423c
architecture-diagrams is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (338 stars, last pushed 6mo ago), licensed MIT. It adds 41 tokens to every session and 689 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 2026-08-30.
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