prompt-engineering

prompt-engineering is a skill for Claude Code, Codex from bdiasti/maestro-bundle-cli. It costs 32 tokens per session (1,333 once invoked), scanned A, original, MIT.

A method for writing and improving the instructions given to an AI agent. It uses structured sections, examples, and reviews to make those instructions clearer and more consistent.

In plain words
What is it for?
Use it to write system prompts, review existing prompts, create role-specific instructions and examples, refine prompts from evaluation results, and reduce prompt length.
Why use it?
It helps address agents that misunderstand tasks, follow unclear rules, produce the wrong format, or use more text than necessary.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/bdiasti/maestro-bundle-cli/prompt-engineering
Any agent
npx skills add bdiasti/maestro-bundle-cli --skill prompt-engineering
Clone the repo
git clone --depth 1 https://github.com/bdiasti/maestro-bundle-cli

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-engineering

README.md
[![agentmods](https://agentmods.dev/badge/skills/bdiasti/maestro-bundle-cli/prompt-engineering.svg)](https://agentmods.dev/skills/bdiasti/maestro-bundle-cli/prompt-engineering)
Your own site
<a href="https://agentmods.dev/skills/bdiasti/maestro-bundle-cli/prompt-engineering"><img src="https://agentmods.dev/badge/skills/bdiasti/maestro-bundle-cli/prompt-engineering.svg" alt="Measured on agentmods" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,333 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00032 $0.01333
Opus 5 $0.00016 $0.00666
Sonnet 5 $0.00006 $0.00267
Haiku 4.5 $0.00003 $0.00133

Measured 4d ago against content hash 0a283aec6bf1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

prompt-engineering 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 4d 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.

templates/bundle-ai-agents/skills/prompt-engineering/SKILL.md · 159 lines

How it starts

The opening of the file, as written. The whole thing — 159 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prompt Engineering

Craft effective system prompts for AI agents using structured templates, best practices, and iterative refinement.

When to Use

  • Writing a new system prompt for an agent
  • Improving an underperforming agent's instructions
  • Creating role-specific prompts for multi-agent systems
  • Reviewing prompts for anti-patterns and clarity issues
  • Optimizing prompts to reduce token usage without losing quality

Available Operations

  1. Write a structured system prompt from scratch
  2. Audit an existing prompt for anti-patterns
  3. Refine a prompt based on agent evaluation results
  4. Create few-shot examples for a prompt
  5. Optimize prompt token count

Multi-Step Workflow

Step 1: Define the Prompt Structure

Every agent system prompt should follow this 6-part structure:

1. IDENTITY   -- Who the agent is
2. OBJECTIVE  -- What it must achieve
3. TOOLS      -- What it has available
4. RULES      -- Non-negotiable constraints
5. FORMAT     -- How to structure output
6. EXAMPLES   -- Concrete demonstrations

Step 2: Write the System Prompt

Use the template below, filling in each section with specific details.

SYSTEM_PROMPT = """
## Identity
You are {role}, specialized in {specialty}.

## Objective
Your mission is {primary_objective}. You work within Maestro,
a development governance platform.

## Available Tools
{list_of_tools_with_descriptions}

## Rules
1. Always follow the {bundle_name} bundle for code standards
2. Every commit must reference the task: {task_id}
3. Work only in the designated worktree: {worktree_path}
4. Report progress at every significant step
5. Request human review for destructive operations

## Response Format
- For code: use fenced code blocks with language specified
- For decisions: justify with "why"
- For errors: include context and suggested fix

## Example
Task: "Create endpoint GET /api/v1/demands"
Action: Create controller, use case, repository following Clean Architecture
Branch: feature/backend-{task_id}
"""

Read the full file on GitHub · 159 lines

Files

What ships with it

2 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. 4d ago First seen · 159 lines · 32 tokens per session scan A 0a283aec6bf1

Subscribe to this mod's changes

prompt-engineering is a skill published in the GitHub repository bdiasti/maestro-bundle-cli (21 stars, last pushed 5mo ago), licensed MIT. It adds 32 tokens to every session and 1,333 once invoked, about $0.0002 per session on Opus 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.

Related

Other skills, from other repositories

enhance-prompt

Transforms vague UI ideas into polished, Stitch-optimized prompts. Enhances specificity, adds UI/UX keywords, injects design system context, and structures output for better generation results.

google-labs-code/stitch-skills · 41 tokens

prompt-optimization

Improve a prompt on the evaluations workbench through a measured loop. Score the baseline first, then duplicate the target column, form a hypothesis from failing rows, edit the copy's prompt draft, run, compare pass rate and cost, and repeat until the numbers hold. Use when the user asks to optimize or improve a…

langwatch/langwatch · 105 tokens

prompt-engineer

Writes, refactors, and evaluates prompts for LLMs — generating optimized prompt templates, structured output schemas, evaluation rubrics, and test suites. Use when designing prompts for new LLM applications, refactoring existing prompts for better accuracy or token efficiency, implementing chain-of-thought or few-shot…

Jeffallan/claude-skills · 93 tokens

prompt-master

Generates optimized prompts for AI tools. Activates only when the user explicitly asks to write, fix, improve, or adapt a prompt for a specific AI tool (LLM, Cursor, Midjourney, image AI, video AI, coding agents, etc.). Does not activate for general conversation, coding tasks, document writing, or other…

nidhinjs/prompt-master · 78 tokens

ideogram4

Prompting patterns for Ideogram 4 text-to-image — best-in-class in-image text rendering and exact color/layout control via structured JSON captions. Use when generating images that need legible on-image text (title cards, thumbnails, logos, signage, CTAs), precise brand colors, or controlled spatial layout. Triggers…

digitalsamba/claude-code-video-toolkit · 99 tokens

seedance-antislop

This skill should be used when a Seedance 2.0 prompt contains generic AI filler, hollow superlatives, vague cinematic language, bloated adjectives, weak verbs, or needs sharper production-specific wording.

Emily2040/seedance-2.0 · 48 tokens