rule-evolution

rule-evolution is a cursor rule for Cursor from LSRabbit6/cursor-genesis. It costs 0 tokens per session (568 once invoked), scanned A, original, no licence file.

A guide for changing an agent’s behavior or its rule settings.

In plain words
What is it for?
It is for updating agent instructions and behavior rules.
Why use it?
It provides a defined process for reviewing changes to how the agent works.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

Good fit It is for updating agent instructions and behavior rules.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/lsrabbit6/cursor-genesis/rule-evolution
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.

Clone the repo
git clone --depth 1 https://github.com/LSRabbit6/cursor-genesis

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 rule-evolution

README.md
[![agentmods](https://agentmods.dev/badge/rules/lsrabbit6/cursor-genesis/rule-evolution/github.svg)](https://agentmods.dev/rules/lsrabbit6/cursor-genesis/rule-evolution)
Your own site
<a href="https://agentmods.dev/rules/lsrabbit6/cursor-genesis/rule-evolution"><img src="https://agentmods.dev/badge/rules/lsrabbit6/cursor-genesis/rule-evolution/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 rule-evolution

Your own site · 80×15
<a href="https://agentmods.dev/rules/lsrabbit6/cursor-genesis/rule-evolution"><img src="https://agentmods.dev/badge/rules/lsrabbit6/cursor-genesis/rule-evolution.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 568 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00000 $0.00568
Opus 5.5 $0.00000 $0.00227
Sonnet 5.5 $0.00000 $0.00114
Haiku 4.5 $0.00000 $0.00057

Measured 2mo ago against content hash d3549e5fcc68, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rule-evolution 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 2mo 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.

stable/atoms/rules/enterprise/rule-evolution.mdc · 58 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. 2mo ago First seen · 58 lines · 0 tokens per session scan A d3549e5fcc68

Subscribe to this mod's changes

rule-evolution is a cursor rule published in the GitHub repository LSRabbit6/cursor-genesis (2 stars, last pushed 7d ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 568 tokens. 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 2026-08-31.