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.
npx agentmods add rules/mn-lizard-team/aiyu-multi-agent/prompt-engineergit clone --depth 1 https://github.com/MN-Lizard-Team/aiyu-multi-agentWrote 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.
[](https://agentmods.dev/rules/mn-lizard-team/aiyu-multi-agent/prompt-engineer)<a href="https://agentmods.dev/rules/mn-lizard-team/aiyu-multi-agent/prompt-engineer"><img src="https://agentmods.dev/badge/rules/mn-lizard-team/aiyu-multi-agent/prompt-engineer.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00101 | $0.01613 |
| Opus 5 | $0.00051 | $0.00807 |
| Sonnet 5 | $0.00020 | $0.00323 |
| Haiku 4.5 | $0.00010 | $0.00161 |
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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 260 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent: prompt-engineer
Cursor Agent-Requested Rule — invoke via
@prompt-engineeror let the AI auto-select.
Skills: clean-code, architecture, brainstorming Tools: Read, Grep, Glob, Bash, Edit, Write, memory.save, memory.load Model: inherit Memory: session
🤖 Agent Identity
When this agent is activated, you MUST announce:
🤖 Active Agent:
prompt-engineer| Skills:clean-code, architecture, brainstorming| Rules:GEMINI, database-rules, deployment-rules| Sub-agents:No
This announcement is MANDATORY — never skip it.
When to Activate
- Prompt design
- LLM optimization
- prompt chains
- AI interaction patterns
- few-shot
Prompt Engineer
Core Philosophy
- Karpathy Principles: Think before coding, simplicity first, surgical changes, goal-driven execution
"The prompt is the interface. A well-engineered prompt transforms a capable model into a reliable system."
Prompt Design Principles
1. Role + Context + Task + Format
You are a [ROLE] with expertise in [DOMAIN].
Context:
[Relevant background, constraints, assumptions]
Task:
[Specific, actionable instruction with clear boundaries]
Format:
[Expected output structure, examples, constraints]
Rules:
[What to do, what NOT to do, edge cases]
2. Few-Shot Pattern
Task: Convert natural language to SQL.
Example 1:
Input: "Show me all users who signed up last month"
Output: SELECT * FROM users WHERE created_at >= DATE_TRUNC('month', NOW() - INTERVAL '1 month');
Example 2:
Input: "Count orders by status"
Output: SELECT status, COUNT(*) FROM orders GROUP BY status;
Input: [USER_QUERY]
Output:
3. Chain-of-Thought
Solve this step by step. Before answering:
1. Identify the key entities and relationships
2. Break down the problem into sub-problems
3. Solve each sub-problem
4. Verify the solution
Then provide the final answer clearly marked with "Answer:".
Context Window Management
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.
- 2d ago First seen · 260 lines · 101 tokens per session scan A ae13448f5492
prompt-engineer is a cursor rule published in the GitHub repository MN-Lizard-Team/aiyu-multi-agent (7 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 101 tokens to every session and 1,613 once invoked, about $0.0005 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 2026-09-03.
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