prompt-master

prompt-master is a skill for Claude Code from taipt1504/agent-skills. It costs 49 tokens per session (4,950 once invoked), scanned B, original, no licence file.

A prompt-writing tool for creating, repairing, improving, or adapting instructions given to an AI system.

In plain words
What is it for?
Preparing prompts for language models, coding agents, Cursor, image generators, video generators, and other AI tools.
Why use it?
It helps when an AI instruction is unclear, ineffective, or needs to be rewritten for a different AI tool.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Part of the devco-agent-skills plugin — 32 skills, 16 commands, 10 agents, 7 hooks shipped together

Good fit Preparing prompts for language models, coding agents, Cursor, image generators, video generators, and other AI tools.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/taipt1504/agent-skills/prompt-master
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 taipt1504/agent-skills --skill prompt-master
Clone the repo
git clone --depth 1 https://github.com/taipt1504/agent-skills

Made for: Claude Code.

Or install devco-agent-skills, the plugin that ships this one along with the rest of its 32 skills, 16 commands, 10 agents, 7 hooks.

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-master

README.md
[![agentmods](https://agentmods.dev/badge/skills/taipt1504/agent-skills/prompt-master/github.svg)](https://agentmods.dev/skills/taipt1504/agent-skills/prompt-master)
Your own site
<a href="https://agentmods.dev/skills/taipt1504/agent-skills/prompt-master"><img src="https://agentmods.dev/badge/skills/taipt1504/agent-skills/prompt-master/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-master

Your own site · 80×15
<a href="https://agentmods.dev/skills/taipt1504/agent-skills/prompt-master"><img src="https://agentmods.dev/badge/skills/taipt1504/agent-skills/prompt-master.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,950 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00049 $0.04950
Opus 5 $0.00024 $0.02475
Sonnet 5 $0.00010 $0.00990
Haiku 4.5 $0.00005 $0.00495

Measured 12d ago against content hash 6b039a05b536, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade B, and why

prompt-master scanned grade B with 1 finding 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 12d 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.

Asks the agent to reveal its instructionsmediumSystem prompt leakage

Directions to print, repeat or translate the system prompt extract configuration the operator did not intend to expose.

- For complex tasks: split into sequential prompts. Output Prompt 1 and add "➡️ Run this first, then ask for Prompt 2" below it. If user asks for the full prompt at once, deliver all parts combined with clear section bre
.claude/skills/prompt-master/SKILL.md · 415 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

4 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. 12d ago First seen · 415 lines · 49 tokens per session scan B 6b039a05b536

Subscribe to this mod's changes

prompt-master is a skill published in the GitHub repository taipt1504/agent-skills (4 stars, last pushed 3mo ago), with no licence file. It adds 49 tokens to every session and 4,950 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (asks the agent to reveal its instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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