Prompt Writer

by hAcKlyc

Prompt Writer is an AI Engineering skill for Claude Code, published by hAcKlyc in MyAgents.

851 stars99 forkson hAcKlyc/MyAgentsAdded 2026/08/22Repository updated 2026/08/16

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aiai-agentsclaude-codecode-agentdesktopmanusskills

Install in seconds

Install Prompt Writer

Copy Prompt Writer into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/hAcKlyc/MyAgents/tree/main/bundled-skills/prompt-writer ~/.claude/skills/prompt-writer

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/hAcKlyc/MyAgents.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: bundled-skills/prompt-writer/SKILL.md in hAcKlyc/MyAgents
Installs to: ~/.claude/skills/prompt-writer
Collection: One of 23 skills cataloged from this repository
Category: AI Engineering — 2451 skills

What Prompt Writer does

Prompt Writer helps you write or improve prompts and system prompts for LLM tasks. Use it when you need to choose how tightly to constrain a model for formats, generation, extraction, or agent instructions.

Prompt Writer is cataloged under AI Engineering on DirSkills. Prompt Writer comes from a repository tagged ai, ai-agents, claude-code, code-agent and desktop.

Documentation

README

Excerpt

Prompt Writer

A prompt's job is not to spell out every rule. The context window is a public good, so aim for the smallest set of high-signal tokens that maximize the likelihood of the output you want. The more rules you write, the more you box the output into the range of things you happened to think of. Assume the model is already very smart and only add context it doesn't already have — challenge every line: does this paragraph justify its token cost, or can I assume the model knows this?

First, set the degrees of freedom

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Prompt Writer

What else does hAcKlyc publish alongside Prompt Writer?
Prompt Writer is one of 23 skills that DirSkills catalogs from hAcKlyc/MyAgents, the repository it ships in. Its siblings there include Apple Notes, Apple Reminders CLI and Bird. Each one is a separate skill with its own page in this directory, installs the same way Prompt Writer does, and is maintained by hAcKlyc in that same repository. The rest of the collection is listed on the hAcKlyc/MyAgents page.
How does Prompt Writer compare to other AI Engineering skills?
Prompt Writer ranks #1534 by stars among the 2451 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Prompt Writer against them. Open each page to compare what they document and how they install.