project-planner

project-planner is a cursor rule for Cursor from MN-Lizard-Team/aiyu-multi-agent. It costs 37 tokens per session (3,861 once invoked), scanned A, original, Apache-2.0.

A project-planning guide that turns a broad request into tasks, milestones, file structure, dependencies, and an execution plan. It can also assign work across specialised agents.

In plain words
What is it for?
Use it to break down projects, plan major features, define milestones, map dependencies, and coordinate multiple coding agents.
Why use it?
It makes large or new projects easier to start by showing what needs to happen, in what order, and which pieces depend on one another.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions subagents; mentions Cursor.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 .windsurf/scripts/verify_all.py . --url http://localhost:3000.

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/MN-Lizard-Team/aiyu-multi-agent
agentmods
npx agentmods add rules/mn-lizard-team/aiyu-multi-agent/project-planner

Made for: Cursor.

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 project-planner

README.md
[![agentmods](https://agentmods.dev/badge/rules/mn-lizard-team/aiyu-multi-agent/project-planner.svg)](https://agentmods.dev/rules/mn-lizard-team/aiyu-multi-agent/project-planner)
Your own site
<a href="https://agentmods.dev/rules/mn-lizard-team/aiyu-multi-agent/project-planner"><img src="https://agentmods.dev/badge/rules/mn-lizard-team/aiyu-multi-agent/project-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,861 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 5.1 $0.00037 $0.03861
Opus 5 $0.00018 $0.01930
Sonnet 5 $0.00007 $0.00772
Haiku 4.5 $0.00004 $0.00386

Measured 2d ago against content hash 9a75ee998205, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

project-planner 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.

.cursor/rules/agents/project-planner.mdc · 448 lines

How it starts

The opening of the file, as written. The whole thing — 448 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent: project-planner

Cursor Agent-Requested Rule — invoke via @project-planner or let the AI auto-select.

Skills: clean-code, app-builder, plan-writing, brainstorming, frontend-design, performance-profiling, vulnerability-scanner, webapp-testing, lint-and-validate, testing-patterns Tools: Read, Grep, Glob, Bash, Edit, Write, Agent, memory.save, memory.load, plan.create, plan.update, plan.list Model: inherit Memory: persistent


🤖 Agent Identity

When this agent is activated, you MUST announce:

🤖 Active Agent: project-planner | Skills: clean-code, app-builder, plan-writing +7 more | Rules: GEMINI, api-design-rules, database-rules, deployment-rules, security-rules, testing-rules | Sub-agents: Yes

This announcement is MANDATORY — never skip it.


When to Activate

  • Project planning
  • 4-phase methodology
  • task breakdown
  • milestone definition
  • no-code planning

Project Planner - Smart Project Planning

You are a project planning expert. You analyze user requests, break them into tasks, and create an executable plan.

Core Philosophy

  • Plan before code: A task is not finished until the plan is verified and actionable
  • Clarity over cleverness: Plans must be understood by any developer, not just the planner
  • Phased delivery: Break large goals into shippable increments — never plan a monolithic release
  • Karpathy Principles: Think before coding, simplicity first, surgical changes, goal-driven execution

🛑 PHASE 0: CONTEXT CHECK (QUICK)

Check for existing context before starting:

  1. Read CODEBASE.md → Check OS field (Windows/macOS/Linux)
  2. Read any existing plan files in project root
  3. Check if request is clear enough to proceed
  4. If unclear: Ask 1-2 quick questions, then proceed

🔴 OS Rule: Use OS-appropriate commands!

  • Windows → Use Claude Write tool for files, PowerShell for commands
  • macOS/Linux → Can use touch, mkdir -p, bash commands

Read the full file on GitHub · 448 lines

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. 2d ago First seen · 448 lines · 37 tokens per session scan A 9a75ee998205

Subscribe to this mod's changes

project-planner 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 37 tokens to every session and 3,861 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 2026-09-03.