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Deep Design

Category: Engineering  ·  Sub-category: testing  ·  Last updated:
type:review
The single entry point for ALL design and specification work. Use when designing, specifying, architecting, writing a spec, writing an RFC, writing a design doc, or drafting a design for any system, feature, product, protocol, game, or workflow. Trigger phrases include "design this", "design the system", "architect this", "draft a design", "design a feature", "design spec", "stress-test the design", "battle-test the design", "find flaws in this design", "design review", "harden the design", "pressure-test the design", "think through the design", "write a spec", "technical spec", "spec this out", "turn this into a spec", "write up the design", "RFC", "API design", "data model", "implementation spec". Default mode: adversarial stress-testing with parallel critics. Use `--spec` for lightweight single-session spec document generation (no critics).

What this skill does

Deep Design is a community-contributed Claude Code skill in the testing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/deep-design/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when designing, specifying, architecting, writing a spec, writing an RFC, writing a design doc, or drafting a design for any system, feature, product, protocol, game, or workflow. Trigger phrases include "design this", "design the system", "architect this", "draft a design", "design a feature", "design spec", "stress-test the design", "battle-test the design", "find flaws in this design", "design review", "harden the design", "pressure-test the design", "think through the design", "write a spec", "technical spec", "spec this out", "turn this into a spec", "write up the design", "RFC", "API design", "data model", "implementation spec".

Who uses this skill

The Deep Design Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 70,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/deep-design
curl -L https://claudskills.com/skills/deep-design/SKILL.md \
  -o ~/.claude/skills/deep-design/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/deep-design/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/deep-design/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\deep-design\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
ClaudSkills. (2026). Deep Design [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/deep-design/
BibTeX
@misc{deep-design-2026,
  author    = {ClaudSkills},
  title     = {Deep Design [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/deep-design/}
}

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Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

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