Is the Prompt Architect skill free?

Yes. The skill itself is free from ckelsoe/prompt-architect. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Prompt Architect SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.

How do I install Prompt Architect?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Prompt Architect with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Prompt Architect

Improves prompts by scoring them and applying one of 31 prompt-engineering frameworks

by ckelsoe · ckelsoe/prompt-architect

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 31, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 955bd2a

Fetched SKILL.md and the repo tree via GitHub API; frontmatter parses with name+description; spot-checked bab_template.txt, references/techniques/few-shot.md, references/frameworks/co-star.md — all HTTP 200. Confirmed 31 frameworks (30 framework .md files plus rise.md covering RISE-IE/RISE-IX) and 7 intent categories, matching README claims; no security smells. Output test: improved the prompt "Write a product description for my new water bottle" both ways — baseline silently fabricated "insulated" (not in the original) and gave no format/audience, while the skill-followed version emitted [you fill this in: ...] placeholders, added an explicit "Do not invent features not listed" rule, a 40-60 word hook + 3-4 bullets format, and a before/after score of 3.4.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 7/10
Docs & honesty 5/5

What Prompt Architect does

A prompt-engineering skill that scores a user's prompt on five dimensions (clarity, specificity, context, completeness, structure), detects intent across seven categories, and rewrites it using one of 31 frameworks (CO-STAR, BAB, RISEN, ReAct, and more) via fill-in templates. Triggers when a user asks to improve, rewrite, structure, or engineer a prompt, or asks which framework to use. Emits a clean copy-paste prompt with placeholders for facts only the user can supply.

How to install Prompt Architect

git clone --depth 1 https://github.com/ckelsoe/prompt-architect.git /tmp/prompt-architect-src
mkdir -p ~/.claude/skills
cp -R /tmp/prompt-architect-src/skills/prompt-architect ~/.claude/skills/prompt-architect
# No external deps. SKILL.md lives at skills/prompt-architect/ with assets/templates/ and references/ alongside.
# Plugin-marketplace alternative: repo ships .claude-plugin/marketplace.json (owner ckelsoe) if you prefer plugin install.

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Prompt Architect

/prompt-architect Improves prompts by scoring them and applying one of 31 prompt-engineering frameworks

It also activates on plain-language prompts like these:

Help me write a better prompt for this task
Improve this prompt using a proven framework
What framework should I use for this classification prompt

Frequently asked questions

Is the Prompt Architect skill free?: Yes. The skill itself is free from ckelsoe/prompt-architect. SkillProof publishes the install command and an independent test verdict at no cost.
Does Prompt Architect work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 31, 2026. Verdict: Tested · Works. Fetched SKILL.md and the repo tree via GitHub API; frontmatter parses with name+description; spot-checked bab_template.txt, references/techniques/few-shot.md, references/frameworks/co-star.md — all HTTP 200. Confirmed 31 frameworks (30 framework .md files plus rise.md covering RISE-IE/RISE-IX) and 7 intent categories, matching README claims; no security smells. Output test: improved the prompt "Write a product description for my new water bottle" both ways — baseline silently fabricated "insulated" (not in the original) and gave no format/audience, while the skill-followed version emitted [you fill this in: ...] placeholders, added an explicit "Do not invent features not listed" rule, a 40-60 word hook + 3-4 bullets format, and a before/after score of 3.4.
What is the Prompt Architect SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.
How do I install Prompt Architect?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Prompt Architect with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.