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Updated 4mo ago

by ftvision

system-design-skill

System design interview practice skill for Claude Code & Codex (mock, learn, postmortem, generate)

Works with
  • Claude
  • Codex
View on GitHub (opens in a new tab)

40 GitHub stars (40)

+3 in 30 days

Stars gained per day · daily snapshots since Sep 30
Stars gained per day, Sep 30 to Nov 5: +3 in total; the busiest day was Oct 25 with +1 stars.Oct 1: 0 starsOct 2: 0 starsOct 3: 0 starsOct 4: 0 starsOct 5: 0 starsOct 6: 0 starsOct 7: 0 starsOct 8: 0 starsOct 9: 0 starsOct 10: 0 starsOct 11: 0 starsOct 12: 0 starsOct 13: 0 starsOct 14: 0 starsOct 15: 0 starsOct 16: 0 starsOct 17: 0 starsOct 18: 0 starsOct 19: 0 starsOct 20: 0 starsOct 21: 0 starsOct 22: 0 starsOct 23: 0 starsOct 24: 0 starsOct 25: +1 starsOct 26: 0 starsOct 27: +1 starsOct 28: 0 starsOct 29: 0 starsOct 30: 0 starsOct 31: 0 starsNov 1: 0 starsNov 2: 0 starsNov 3: 0 starsNov 4: 0 starsNov 5: +1 stars
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  • 1 skill (1 skills found in its SKILL.md files)
  • 7 forks (7 forks)
  • 4mo ago last update (Last updated 4mo ago)

Install

Skills CLI

npx skills add ftvision/system-design-skill

Asks which agents to install it for. Add -g to install it for every project.

Claude Code

git clone https://github.com/ftvision/system-design-skillcp -r "system-design-skill/skill" ~/.claude/skills/

Copies the system-design skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project).

Plugin

/plugin marketplace add ftvision/system-design-skill

Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.

Skills can run code on your machine — read the SKILL.md first.

What it does

In the author's own words, from each skill's SKILL.md.

  • system-design

    Practice system design interviews. Four modes: `mock` (Claude=interviewer, strict, scores at end), `learn` (Claude=interviewee at staff level so user sees what good looks like; `--auto` runs both roles as sub-agents while user observes), `postmortem` (diagnose a past real interview, with --file or free-form Q&A), `generate` (create a fresh question + rubric and write 4 markdown files to ./system-…

    skill/SKILL.md on GitHub (opens in a new tab)

Review before you install

A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.