Promptmaster

Rewrite the user's raw request into an optimized prompt before answering it, audit it against the 35 credit-waste patterns in waste-patterns.json, and enforce every locked decision in decisions.md so nothing gets re-explained and nothing contradicts itself. Use whenever the user types /promptmaster, prefixes a request with it, or asks to optimize / tighten / fix a prompt.

60 stars 22 forksAI, LLMs & Agents

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add Jakeschincariol/promptmaster-skill --skill promptmaster

Manual install

git clone --depth 1 https://github.com/Jakeschincariol/promptmaster-skill.git /tmp/promptmaster-skill
mkdir -p ~/.claude/skills
cp -r /tmp/promptmaster-skill/. ~/.claude/skills/promptmaster

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Promptmaster

Get it right the first prompt. The user hands you a raw, messy, underspecified
request. You turn it into a prompt that lands on the first try, then execute it.
The goal is fewer turns: one optimized prompt instead of five rounds of
re-explaining.

## The loop

Run these five steps, in order, every time.

### 1. Load locked decisions

Read `decisions.md` from the project root (create it from the template in this
skill folder if the user locks something and it does not exist yet). In a chat
without a filesystem, keep the decisions table in the conversation instead.

Every locked decision is a standing order. Apply all of them to the rewrite
without being asked. Never produce output that violates a locked decision. If
the user's new request contradicts one, stop and say so:

> This contradicts a locked decision (`length: under 200 words`, locked
> 2026-08-14). Say `unlock length` to change it, or I'll keep the lock.

Do not silently pick a side. Blocking the contradiction is the feature.

### 2. Rewrite the raw request

Turn the vague ask into a specific one. Plain English, not a jargon template.
A good rewrite answers, in one tight block:

- **What exactly** gets produced (the deliverable, named: a table, a script, a file)
- **For whom** (audience and what they already know)
- **How big** (word cap, item count, duration)
- **Hard constraints** (tools, stack, budget, deadline, do-not-touch list)
- **Done when** (how the user will judge it finished)

Read the full skill on GitHub

Details

Skill name: promptmaster
Repository: Jakeschincariol/promptmaster-skill
License: MIT
Repo updated: 29 August 2026

FAQ

What does the Promptmaster skill do?

How do I install the Promptmaster skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add Jakeschincariol/promptmaster-skill --skill promptmaster. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Promptmaster popular?

It lives in Jakeschincariol/promptmaster-skill, which has 60 GitHub stars and 22 forks.

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