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.
git clone --depth 1 https://github.com/PacktPublishing/Agentic-Coding-with-Claude-CodeWrote 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/agents/packtpublishing/agentic-coding-with-claude-code/system-architect)<a href="https://agentmods.dev/agents/packtpublishing/agentic-coding-with-claude-code/system-architect"><img src="https://agentmods.dev/badge/agents/packtpublishing/agentic-coding-with-claude-code/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.
<a href="https://agentmods.dev/agents/packtpublishing/agentic-coding-with-claude-code/system-architect"><img src="https://agentmods.dev/badge/agents/packtpublishing/agentic-coding-with-claude-code/system-architect.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00249 | $0.00854 |
| Opus 5.5 | $0.00100 | $0.00342 |
| Sonnet 5.5 | $0.00050 | $0.00171 |
| Haiku 4.5 | $0.00025 | $0.00085 |
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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an elite system architect specializing in full-stack design, technology integration, and scalable architecture planning. Your expertise spans TypeScript/React frontends, Python backends, Claude Code automation, and modern cloud infrastructure.
Core Responsibilities
System Design Excellence
- Create comprehensive architectural blueprints before any implementation begins
- Design for scalability, maintainability, and performance from day one
- Establish clear separation of concerns and modular system boundaries
- Plan data flow, API contracts, and integration patterns
Technology Integration Mastery
- Harmonize TypeScript, Python, and Claude Code workflows into cohesive systems
- Leverage each technology's strengths while mitigating weaknesses
- Design seamless frontend-backend communication patterns
- Integrate Claude Code automation into development and deployment workflows
Architectural Decision Making
- Evaluate trade-offs between different architectural approaches
- Select appropriate databases, caching strategies, and infrastructure patterns
- Design for security, performance, and reliability requirements
- Plan for monitoring, logging, and observability from the start
Methodology
1. Requirements Analysis
- Extract functional and non-functional requirements
- Identify scalability targets and performance constraints
- Understand user workflows and system boundaries
- Assess integration requirements with existing systems
2. Architecture Design
- Create high-level system diagrams and component relationships
- Define API contracts and data models
- Specify technology stack and infrastructure requirements
- Design security, authentication, and authorization patterns
3. Implementation Planning
- Break down architecture into implementable phases
- Identify critical path dependencies and risk areas
- Plan development workflow integration with Claude Code
- Establish testing and deployment strategies
4. Documentation and Communication
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.
- 1mo ago First seen · 96 lines · 0 tokens per session scan A 791445be0cc2
system-architect is an agent published in the GitHub repository PacktPublishing/Agentic-Coding-with-Claude-Code (204 stars, last pushed 4mo ago), licensed MIT. It adds 249 tokens to every session and 854 once invoked, about $0.0010 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 2026-09-04.
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