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Agent skill

System Architecture

by yennanliu in yennanliu/CS_basics

System design and architecture expert for creating scalable distributed systems.

No licenceAuto-check passedDatabases

Install System Architecture

skills CLI
$ npx skills add yennanliu/CS_basics --skill system-architecture -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install yennanliu/CS_basics system-architecture --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/yennanliu/CS_basics.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/system-architecture .claude/skills/system-architecture && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
system-architecture
GitHub stars
141
Token cost
~2k tokens
SKILL.md length
623 words
Files
1
Skills in repo
16
Repo updated
First seen
Licence
None found

At a glance

System design and architecture expert for creating scalable distributed systems.

  • Works in 10 steps: Requirements Gathering (5-10 minutes) → Capacity Estimation (Back-of-the-envelope) → High-Level Design → …
  • Designing systems
  • SKILL.md covers When to use this Skill, System Design Framework, Interview Tips and Common Mistakes to Avoid, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

System Architecture is an agent skill from yennanliu/CS_basics. System design and architecture expert for creating scalable distributed systems. Covers system design interviews, architecture patterns, and real-world case studies like Netflix, Twitter, Uber. Use when designing systems, writing architecture docs, or preparing for system design interviews.

Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Databases, covering Software architecture and NoSQL databases. It works with X (Twitter) and SQL. The repository describes itself as: My CS learning : algorithm, data structure, and system design | SE.

When your agent uses it

  • Designing systems
  • Writing architecture docs
  • Preparing for system design interviews

Example prompts

  • “/system-architecture”

Requirements

  • Pre-approved tools (allowed-tools): Read, Glob, Grep, Write

Workflow steps

10 steps, taken from the step headings in SKILL.md.

  1. Requirements Gathering (5-10 minutes)
  2. Capacity Estimation (Back-of-the-envelope)
  3. High-Level Design
  4. Database Design
  5. Deep Dive Components
  6. Scalability Patterns
  7. Reliability & Availability
  8. Common System Design Patterns
  9. System Design Template
  10. Real-World Examples

What it can do on your machine

Read from SKILL.md and the folder at commit cb6b21b. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Glob
    • Grep
    • Write

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are sql and markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

System Architecture loads about 2k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 623 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~78
When it runs · the whole SKILL.md, loaded when a task matches
~2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 623 words (~1,989 tokens).

name
system-architecture
allowed-tools
Read, Glob, Grep, Write

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/system-architecture of yennanliu/CS_basics.

Open the folder on GitHubat commit cb6b21b

Compare with similar skills

System Architecture next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

System Architecture compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
System Architecture this skillyennanliu/CS_basics141—~2kAutomated safety check: PassNone
Azure Storagemicrosoft/GitHub-Copilot-for-Azure2552 repos~1.3kAutomated safety check: PassMIT
AWS Storageaws/agent-toolkit-for-aws2.8k—~5.8kAutomated safety check: PassApache-2.0
Database FundamentalsDanielPodolsky/ownyourcode2901 repos~1.6kAutomated safety check: PassMIT
Mongodb Schema Designmongodb/agent-skills1892 repos~3.4kAutomated safety check: PassApache-2.0
Mongodb Natural Language Queryingmongodb/agent-skills1891 repos~2.4kAutomated safety check: PassApache-2.0

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Works with

Categories

Questions about System Architecture

What does System Architecture do?

System design and architecture expert for creating scalable distributed systems. System Architecture is an agent skill from yennanliu/CS_basics. System design and architecture expert for creating scalable distributed systems.

When should I use System Architecture?

System Architecture fits situations like: designing systems; writing architecture docs; preparing for system design interviews.

How do I install System Architecture in Claude Code?

Run `npx skills add yennanliu/CS_basics --skill system-architecture -a claude-code`. Or copy the skill folder (.claude/skills/system-architecture in yennanliu/CS_basics) into .claude/skills/system-architecture in your project. Claude Code loads it when a task matches its description.

How do I install System Architecture in Codex?

Run `npx skills add yennanliu/CS_basics --skill system-architecture -a codex`. Or copy the skill folder (.claude/skills/system-architecture in yennanliu/CS_basics) into .agents/skills/system-architecture in your project. Codex loads it when a task matches its description.

Can I use System Architecture in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add yennanliu/CS_basics --skill system-architecture -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/system-architecture, .gemini/skills/system-architecture, .github/skills/system-architecture and .opencode/skills/system-architecture in your project.

What does System Architecture need to run?

SKILL.md names no scripts, command-line tools or credentials: System Architecture is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Glob, Grep, Write.

Does System Architecture access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is System Architecture safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does System Architecture use?

No licence was found for System Architecture or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does System Architecture use?

About 2k tokens (SKILL.md is roughly 8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to System Architecture?

Skills that share tags, products or a category with System Architecture: Azure Storage (microsoft/GitHub-Copilot-for-Azure, 255 stars), AWS Storage (aws/agent-toolkit-for-aws, 2.8k stars), Database Fundamentals (DanielPodolsky/ownyourcode, 290 stars) and Mongodb Schema Design (mongodb/agent-skills, 189 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains System Architecture?

yennanliu (a GitHub user) maintains it in yennanliu/CS_basics, which has 141 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on October 10, 2026.

Source: yennanliu/CS_basics on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.