prompt-engineer

prompt-engineer is a skill for Claude Code, Codex from SZoloth/skill-pack. It costs 66 tokens per session (1,090 once invoked), scanned A, original, MIT.

A guide for writing clear instructions and prompts for AI systems such as Claude or GPT. It treats the AI like a capable teammate who still needs context, expectations, and a clear definition of good work.

In plain words
What is it for?
Use it to write, review, or improve system prompts, task instructions, and other messages intended for AI assistants.
Why use it?
It helps avoid vague or incomplete requests that lead to inconsistent results, by improving the information and structure given to the AI.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to write, review, or improve system prompts, task instructions, and other messages intended for AI assistants.

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Install with agentmods
npx agentmods add skills/szoloth/skill-pack/prompt-engineer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add SZoloth/skill-pack --skill prompt-engineer
Clone the repo
git clone --depth 1 https://github.com/SZoloth/skill-pack

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for prompt-engineer

README.md
[![agentmods](https://agentmods.dev/badge/skills/szoloth/skill-pack/prompt-engineer/github.svg)](https://agentmods.dev/skills/szoloth/skill-pack/prompt-engineer)
Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for prompt-engineer

Your own site · 80×15
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Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,090 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00066 $0.01090
Opus 5.5 $0.00026 $0.00436
Sonnet 5.5 $0.00013 $0.00218
Haiku 4.5 $0.00007 $0.00109

Measured 1mo ago against content hash 9769dc6eb4ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

prompt-engineer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/prompt-engineer/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prompt Engineer

This skill helps create high-quality prompts and instructions for AI systems by treating AI as a genius human teammate who needs clear, context-rich communication.

Core Philosophy

This skill is built on two foundational principles:

  1. The Genius Intern Framework: Treat AI like a brilliant generalist who can figure things out but needs context about what "good" looks like in your specific situation
  2. Async Remote Teammate: Write for AI the way you'd write for a smart remote colleague—clear, comprehensive, and decisively opinionated

Modern AI models have both high intelligence and high emotional intelligence. They don't need tricks or "prompt engineering hacks"—they need what any smart remote teammate needs: clear written communication with sufficient context.

Reference Materials

This skill includes three core reference documents. Read them in full as needed:

Always Load First

Writing for AI Teammates - Core philosophy covering:

  • Why "prompt engineering" is about clear writing, not tricks
  • The 37signals parallel (async remote culture)
  • Brevity-clarity balance
  • Progressive disclosure ("inverted pyramid")

Load this file at the start of every prompt creation task. It's your primary reference.

Then Load Prompt Framework

Prompt Framework - Comprehensive guide covering:

  • Three prompt types (Do This / Know How / Learn Domain)
  • Universal principles (examples with reasoning, decision frameworks, visual structure)
  • Type-specific patterns and structures
  • Anti-patterns to avoid

Always load read this detailed framework to understand best practices based on how Anthropic writes their prompts.

Load Only for GPT-5 Targets

GPT-5 Prompting Guide - GPT-5-specific patterns:

  • Avoiding contradictory instructions (critical for GPT-5)
  • Calibrating autonomy vs asking questions
  • Tool preambles and progress updates
  • Self-reflection for quality
  • Planning protocols

Read the full file on GitHub · 124 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 124 lines · 66 tokens per session scan A 9769dc6eb4ee

Subscribe to this mod's changes

prompt-engineer is a skill published in the GitHub repository SZoloth/skill-pack (14 stars, last pushed 1mo ago), licensed MIT. It adds 66 tokens to every session and 1,090 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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