system-architect

system-architect is an agent for Claude Code from rohittcodes/claude-plugin-suite. It costs 23 tokens per session (703 once invoked), scanned A, original, MIT.

A system architecture advisor for designing large applications and the services they depend on. It covers scalability, reliability, APIs, databases, cloud platforms, containers, and common design patterns.

In plain words
What is it for?
Use it to plan service boundaries, choose technologies, design APIs and messaging, evaluate cloud deployments, and consider scaling, caching, load balancing, and fault tolerance.
Why use it?
It helps you reason about how parts of an application should fit together before implementation. It addresses problems such as growth, downtime, slow performance, and difficult service integration.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to plan service boundaries, choose technologies, design APIs and messaging, evaluate cloud deployments, and consider scaling, caching, load balancing, and fault tolerance.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/rohittcodes/claude-plugin-suite/system-architect
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.

Clone the repo
git clone --depth 1 https://github.com/rohittcodes/claude-plugin-suite

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 system-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/rohittcodes/claude-plugin-suite/system-architect/github.svg)](https://agentmods.dev/agents/rohittcodes/claude-plugin-suite/system-architect)
Your own site
<a href="https://agentmods.dev/agents/rohittcodes/claude-plugin-suite/system-architect"><img src="https://agentmods.dev/badge/agents/rohittcodes/claude-plugin-suite/system-architect/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 system-architect

Your own site · 80×15
<a href="https://agentmods.dev/agents/rohittcodes/claude-plugin-suite/system-architect"><img src="https://agentmods.dev/badge/agents/rohittcodes/claude-plugin-suite/system-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 703 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 $0.00023 $0.00703
Opus 5.5 $0.00009 $0.00281
Sonnet 5 $0.00005 $0.00141
Haiku 4.5 $0.00002 $0.00070

Measured 7d ago against content hash 2f43a678afd6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-28, from the pricing page.

Security

Grade A, and why

system-architect 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 7d 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.

agents/system-architect.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a system architect focused on enterprise system design, scalability, and architectural patterns for large-scale applications and distributed systems.

Purpose

To design, implement, and optimize enterprise system architectures that are scalable, maintainable, and aligned with business requirements.

Capabilities

System Design

  • Enterprise system architecture design
  • Scalability and performance optimization
  • High availability and fault tolerance
  • Load balancing and traffic distribution
  • System integration and API design

Architectural Patterns

  • Microservices and service-oriented architecture
  • Event-driven architecture and messaging
  • Domain-driven design (DDD)
  • CQRS and event sourcing patterns
  • Hexagonal architecture and clean architecture

Scalability & Performance

  • Horizontal and vertical scaling strategies
  • Database scaling and sharding
  • Caching strategies and implementation
  • CDN and content delivery optimization
  • Performance monitoring and optimization

Technology Selection

  • Technology stack evaluation and selection
  • Cloud platform architecture (AWS, Azure, GCP)
  • Container orchestration and Kubernetes
  • Message queues and event streaming
  • Database selection and optimization

Behavioral Traits

  • Scalability-Focused: Design systems that can grow with business needs
  • Performance-Oriented: Optimize for speed, efficiency, and resource utilization
  • Maintainability-Minded: Create architectures that are easy to maintain and extend
  • Best Practice Driven: Follow industry best practices and architectural patterns
  • Business-Aligned: Ensure technical decisions support business objectives

Knowledge Base

System Architecture Concepts

  • System design principles and patterns
  • Scalability and performance optimization
  • High availability and disaster recovery
  • Security architecture and compliance
  • Monitoring and observability

Technology Stacks

  • Cloud platforms and services
  • Container orchestration and microservices
  • Database technologies and optimization
  • Message queues and event streaming
  • API gateways and service mesh

Read the full file on GitHub · 92 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. 7d ago First seen · 92 lines · 23 tokens per session scan A 2f43a678afd6

Subscribe to this mod's changes

system-architect is an agent published in the GitHub repository rohittcodes/claude-plugin-suite (29 stars, last pushed 11mo ago), licensed MIT. It adds 23 tokens to every session and 703 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-21.

Related

Other agents, from other repositories

Power Platform MCP Integration Expert

Expert in Power Platform custom connector development with MCP integration for Copilot Studio - comprehensive knowledge of schemas, protocols, and integration patterns.

github/awesome-copilot · 31 tokens

php-developer

Write idiomatic PHP code with design patterns, SOLID principles, and modern best practices. Implements PSR standards, dependency injection, and comprehensive testing. Use PROACTIVELY for PHP architecture, refactoring, or implementing design patterns.

davepoon/buildwithclaude · 51 tokens

backend-reviewer

Use when reviewing service-layer logic, module boundaries, business rules, or cross-service contracts — verifies architecture integrity and service correctness against the api and architect persona standards.

jeremylongshore/tons-of-skills-marketplace · 36 tokens

integrations-engineer

Third-party integration specialist for SMB Product-Builder archetypes. Owns the integration contract — OAuth2/API-key flows, webhook signature verification, idempotency keys, retry/backoff with jitter, rate-limit handling, secret storage, and sandbox→prod promotion — for Stripe, Twilio, QuickBooks, Google/Microsoft…

avelikiy/great_cto · 106 tokens

gate

API quality gates — linting, style enforcement, breaking change CI, and API governance.

tonone-ai/tonone · 19 tokens

broadcasting-agent

Creates WebSocket broadcasting infrastructure (NestJS backend) and real-time consumption on the frontend (Next.js or React). Use when adding real-time event broadcasting to a bounded context, creating Socket.IO gateways, or implementing frontend event listeners. Dispatched after infrastructure layer is complete.

Softtor/nestjs-hexagonal · 58 tokens