planning

A planning rule that divides work into small slices, each focused on one behavior or one structural change. Each slice must be safe to stop and produce one observable result.

In plain words
What is it for?
It is for writing local or GSD plans, defining roadmap phases, and breaking implementation into behavior-focused or structure-focused slices.
Why use it?
It keeps plans narrow and makes progress easier to verify or pause without leaving a confusing partial change.

Cursor rule for Cursor

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 rules/terryyin/lizard/planning
Clone the repo
git clone --depth 1 https://github.com/terryyin/lizard

Made for: Cursor.

Per session 1,921 This file is loaded in full into every session.
When invoked 1,921 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.01921 $0.01921
Opus 5 $0.00960 $0.00960
Sonnet 5 $0.00384 $0.00384
Haiku 4.5 $0.00192 $0.00192

Measured 2d ago against content hash a78e95a29623, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

planning 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/planning.mdc · 132 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

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 · 132 lines · 1,921 tokens per session scan A a78e95a29623

Subscribe to this mod's changes

planning is a cursor rule published in the GitHub repository terryyin/lizard (2,475 stars, last pushed 3d ago), with no licence file. It adds 1,921 tokens to every session, about $0.0096 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.