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ClaudSkills / Product / prd-spec

Tech Design

Category: Product  ·  Sub-category: prd-spec  ·  Last updated:
Generate a technical design document as a markdown file, given a PRD (or PRD-shaped description). Use this skill whenever the user asks for a tech design, technical design doc, architecture doc, implementation design, engineering design, RFC, or wants to "design the implementation of" / "figure out how we'd build" / "spec out the architecture for" a feature. Trigger on phrases like "write a tech design for the PRD at …", "design the implementation of X", "how would we architect this", "turn this PRD into a design". This is the step *after* a PRD — it converts product intent into engineering specifics (components with real file paths, data model, API contracts, existing patterns to reuse). It is *not* the right fit for product/requirements docs (use `prd-generator`) or for breaking work into tasks (use `task-dag`).
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From the source SKILL.md

Produce a concrete technical design document as a markdown file. A good tech design answers a single question: how will we actually build this? — with enough specificity that an engineer reading it cold can point at the real components, the real file paths, the real function signatures, the real data model, and the existing code they should extend. The design doc is the bridge between product intent (PRD) and decomposed work (task DAG); everything downstream of it depends on this document being concrete.

What this skill does

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

Who uses this skill

The Tech Design Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ 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/tech-design
curl -L https://claudskills.com/skills/tech-design/SKILL.md \
  -o ~/.claude/skills/tech-design/SKILL.md

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

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

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

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

Frequently asked questions

How do I install the Tech Design Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/tech-design/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Tech Design skill do?
Generate a technical design document as a markdown file, given a PRD (or PRD-shaped description). Use this skill whenever the user asks for a tech design, technical design doc, architecture doc, implementation design, engineering design, RFC, or wants to "design the implementation of" / "figure out how we'd build" / "spec out the architecture for" a feature. Trigger on phrases like "write a tech design for the PRD at …", "design the implementation of X", "how would we architect this", "turn this PRD into a design". This is the step *after* a PRD — it converts product intent into engineering specifics (components with real file paths, data model, API contracts, existing patterns to reuse). It is *not* the right fit for product/requirements docs (use `prd-generator`) or for breaking work into tasks (use `task-dag`).
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Tech Design skill?
Use Tech Design when your Claude Code task falls under the Product category — specifically in the prd spec area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Tech Design" or describe the task and let Claude pick). Browse related skills at /category/product/.
What is a Claude Code skill and how does the Tech Design skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Tech Design is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

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

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

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Browse all Product skills → Top 100 skills
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