ClaudSkills / Engineering / architecture

Prompt Craft

Q: What is a Claude Code skill and how does the Prompt Craft 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. Prompt Craft is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: architecture · Last updated: 2026-05-21

ai:agent

Write and refine production-grade prompts and tool definitions for Claude. Use when the user needs to craft a system prompt, improve an existing prompt, design tool schemas (ACI), or apply techniques like few-shot, XML structuring, role prompting, or chain-of-thought. Covers Claude 4.6 specifics. Do NOT use for skill authoring (use skill-author) or agent architecture (use agent-patterns).

From the source SKILL.md

Write production-grade prompts for Claude's latest models. Based on Anthropic's official prompting best practices (April 2026, Claude 4.6).

What this skill does

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

When to invoke it: Use when the user needs to craft a system prompt, improve an existing prompt, design tool schemas (ACI), or apply techniques like few-shot, XML structuring, role prompting, or chain-of-thought. Covers Claude 4.

Who uses this skill

The Prompt Craft 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 116,000+ 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/prompt-craft
curl -L https://claudskills.com/skills/prompt-craft/SKILL.md \
  -o ~/.claude/skills/prompt-craft/SKILL.md

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

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

📱 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 Prompt Craft Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/prompt-craft/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Prompt Craft skill do?

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 Prompt Craft skill?

Use Prompt Craft when your Claude Code task falls under the Engineering category — specifically in the architecture 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 Prompt Craft" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Prompt Craft 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. Prompt Craft is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/jacob-balslev/skill-graph/blob/HEAD/marketplace/skills/prompt-craft/SKILL.md
Author: jacob-balslev

Cite this skill

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

APA

jacob-balslev. (2026). Prompt Craft [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/prompt-craft/

BibTeX

@misc{prompt-craft-2026,
  author    = {jacob-balslev},
  title     = {Prompt Craft [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/prompt-craft/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

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