prompt-engineer

prompt-engineer is a skill for Claude Code, Codex from buiphucminhtam/forgewright. It costs 56 tokens per session (7,183 once invoked), scanned D, original, no licence file.

A guide for designing, evaluating, and improving prompts for AI systems. Prompt engineering means writing instructions that make an AI produce more useful and consistent results.

In plain words
What is it for?
It is for creating prompts for production systems and balancing response quality, cost, and speed.
Why use it?
It helps address unclear or unreliable AI responses by shaping and testing the instructions given to the model.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit It is for creating prompts for production systems and balancing response quality, cost, and speed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/buiphucminhtam/forgewright/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 buiphucminhtam/forgewright --skill prompt-engineer
Clone the repo
git clone --depth 1 https://github.com/buiphucminhtam/forgewright

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/buiphucminhtam/forgewright/prompt-engineer/github.svg)](https://agentmods.dev/skills/buiphucminhtam/forgewright/prompt-engineer)
Your own site
<a href="https://agentmods.dev/skills/buiphucminhtam/forgewright/prompt-engineer"><img src="https://agentmods.dev/badge/skills/buiphucminhtam/forgewright/prompt-engineer/github.svg" alt="Measured on agentmods" height="20"></a>

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
<a href="https://agentmods.dev/skills/buiphucminhtam/forgewright/prompt-engineer"><img src="https://agentmods.dev/badge/skills/buiphucminhtam/forgewright/prompt-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,183 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00056 $0.07183
Opus 5 $0.00028 $0.03592
Sonnet 5 $0.00011 $0.01437
Haiku 4.5 $0.00006 $0.00718

Measured 7d ago against content hash 11da7a3b6d04, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade D, and why

prompt-engineer scanned grade D with 2 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 7d 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.

Instruction-override phrasingmediumPrompt injection

Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.

r"ignore previous instructions",

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- BAD: Instructions without examples -->
skills/prompt-engineer/SKILL.md · 1,015 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

46 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. 7d ago First seen · 1,015 lines · 56 tokens per session scan D 11da7a3b6d04

Subscribe to this mod's changes

prompt-engineer is a skill published in the GitHub repository buiphucminhtam/forgewright (48 stars, last pushed 5d ago), with no licence file. It adds 56 tokens to every session and 7,183 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it D with 2 findings (instruction-override phrasing, hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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