system-architecture

system-architecture is a skill for Claude Code, Codex from sairam0424/MindForge. It costs 63 tokens per session (1,288 once invoked), scanned A, original, MIT.

A guide for designing software structure, including service boundaries, data flow, and trade-offs between a monolith and separate services.

In plain words
What is it for?
Use it to plan a new application, split an existing system, or review architectural decisions.
Why use it?
It helps match the system's complexity to its real requirements instead of designing for imagined future needs.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to plan a new application, split an existing system, or review architectural decisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sairam0424/mindforge/mindforge-system-architecture
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 sairam0424/MindForge --skill mindforge-system-architecture
Clone the repo
git clone --depth 1 https://github.com/sairam0424/MindForge

Made for: Claude Code, Codex.

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 system-architecture

README.md
[![agentmods](https://agentmods.dev/badge/skills/sairam0424/mindforge/mindforge-system-architecture.svg)](https://agentmods.dev/skills/sairam0424/mindforge/mindforge-system-architecture)
Your own site
<a href="https://agentmods.dev/skills/sairam0424/mindforge/mindforge-system-architecture"><img src="https://agentmods.dev/badge/skills/sairam0424/mindforge/mindforge-system-architecture.svg" alt="Measured on agentmods" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,288 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.
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 $0.00063 $0.01288
Opus 5 $0.00032 $0.00644
Sonnet 5 $0.00013 $0.00258
Haiku 4.5 $0.00006 $0.00129

Measured 5d ago against content hash b3589d1e6272, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

system-architecture 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.

.agent/skills/mindforge-system-architecture/SKILL.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

System Architecture

Design real structures with clear boundaries, explicit trade-offs, and appropriate complexity. Match architecture to actual requirements, not imagined future needs.

Workflow

When the user requests an architecture, follow these steps:

Task Progress:
- [ ] Step 1: Clarify constraints
- [ ] Step 2: Identify domains
- [ ] Step 3: Map data flow
- [ ] Step 4: Draw boundaries with rationale
- [ ] Step 5: Run complexity checklist
- [ ] Step 6: Present architecture with trade-offs

Step 1 - Clarify constraints. Ask about:

Constraint Question Why it matters
Scale What's the real load? (users, requests/sec, data size) Design for 10x current, not 1000x
Team How many developers? How many teams? Deployable units ≤ number of teams
Lifespan Prototype? MVP? Long-term product? Temporary systems need temporary solutions
Change vectors What actually varies? Abstract only where you have evidence of variation

Step 2 - Identify domains. Group by business capability, not technical layer. Look for things that change for different reasons and at different rates.

Step 3 - Map data flow. Trace: where does data enter → how does it transform → where does it exit? Make the flow obvious.

Step 4 - Draw boundaries. Every boundary needs a reason: different team, different change rate, different compliance requirement, or different scaling need.

Step 5 - Run complexity checklist. Before adding any non-trivial pattern:

[ ] Have I tried the simple solution?
[ ] Do I have evidence it's insufficient?
[ ] Can my team operate this?
[ ] Will this still make sense in 6 months?
[ ] Can I explain why this complexity is necessary?

If any answer is "no", keep it simple.

Step 6 - Present the architecture using the output template below.

Output Template

### System: [Name]

**Constraints**:
- Scale: [current and expected load]
- Team: [size and structure]
- Lifespan: [prototype / MVP / long-term]

**Architecture**:
[Component diagram or description of components and their relationships]

**Data Flow**:
[How data enters → transforms → exits]

**Key Boundaries**:
| Boundary | Reason | Change Rate |
|----------|--------|-------------|
| ... | ... | ... |

**Trade-offs**:
- Chose X over Y because [reason]
- Accepted [limitation] to gain [benefit]

**Complexity Justification**:
- [Each non-trivial pattern] → [why it's needed, with evidence]

Read the full file on GitHub · 136 lines

Files

What ships with it

2 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. 5d ago First seen · 136 lines · 63 tokens per session scan A b3589d1e6272

Subscribe to this mod's changes

system-architecture is a skill published in the GitHub repository sairam0424/MindForge (0 stars, last pushed 5d ago), licensed MIT. It adds 63 tokens to every session and 1,288 once invoked, about $0.0003 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.