plan-refactor

plan-refactor is a cursor rule for Cursor from danielvm-git/bigpowers. It costs 52 tokens per session (718 once invoked), scanned A, original, MIT.

A planning process for turning a proposed code refactor into small, safe implementation steps. A refactor changes code structure while preserving its intended behaviour.

In plain words
What is it for?
Use it to investigate a refactoring request, review existing test coverage, compare approaches, and save a detailed sequence of small commits.
Why use it?
It documents the current behaviour and the rule that must remain true, reducing the chance of breaking hidden dependencies.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

Good fit Use it to investigate a refactoring request, review existing test coverage, compare approaches, and save a detailed sequence of small commits.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/danielvm-git/bigpowers/plan-refactor
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/danielvm-git/bigpowers

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 plan-refactor

README.md
[![agentmods](https://agentmods.dev/badge/rules/danielvm-git/bigpowers/plan-refactor/github.svg)](https://agentmods.dev/rules/danielvm-git/bigpowers/plan-refactor)
Your own site
<a href="https://agentmods.dev/rules/danielvm-git/bigpowers/plan-refactor"><img src="https://agentmods.dev/badge/rules/danielvm-git/bigpowers/plan-refactor/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 plan-refactor

Your own site · 80×15
<a href="https://agentmods.dev/rules/danielvm-git/bigpowers/plan-refactor"><img src="https://agentmods.dev/badge/rules/danielvm-git/bigpowers/plan-refactor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 718 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 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 $0.00052 $0.00718
Opus 5.5 $0.00021 $0.00287
Sonnet 5.5 $0.00010 $0.00144
Haiku 4.5 $0.00005 $0.00072

Measured 1mo ago against content hash 5fcfff486151, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

plan-refactor 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 1mo 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/plan-refactor.mdc · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan Refactor

HARD GATE — HARD GATE — Before refactoring, document the current behavior and why it is wrong. Extract one invariant that must be preserved. If you skip this, you will break things you don't expect.

Create a detailed refactor plan through a user interview. Save output to specs/REFACTOR_LATEST.md.

Steps

  1. Ask the user for a long, detailed description of the problem they want to solve and any potential ideas for solutions.

  2. Explore the repo to verify their assertions and understand the current state of the codebase.

  3. Ask whether they have considered other options, and present other options to them.

  4. Interview the user about the implementation. Be extremely detailed and thorough.

  5. Hammer out the exact scope of the implementation. Work out what you plan to change and what you plan not to change.

  6. Look in the codebase to check for test coverage of this area. If there is insufficient test coverage, ask the user what their plans for testing are.

  7. Break the implementation into a plan of tiny commits. Remember Martin Fowler's advice: "make each refactoring step as small as possible, so that you can always see the program working."

  8. Save the refactor plan to specs/REFACTOR_LATEST.md. Create the specs/ directory if it doesn't exist.

Problem Statement

The problem that the developer is facing, from the developer's perspective.

Solution

The solution to the problem, from the developer's perspective.

Commits

A LONG, detailed implementation plan. Write the plan in plain English, breaking down the implementation into the tiniest commits possible. Each commit should leave the codebase in a working state.

Each commit entry follows this format:

N. <commit description> → verify: <runnable command>

Decision Document

A list of implementation decisions that were made:

  • The modules that will be built/modified
  • The interfaces of those modules that will be modified
  • Technical clarifications from the developer
  • Architectural decisions
  • Schema changes, API contracts, specific interactions

Read the full file on GitHub · 87 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. 1mo ago First seen · 87 lines · 52 tokens per session scan A 5fcfff486151

Subscribe to this mod's changes

plan-refactor is a cursor rule published in the GitHub repository danielvm-git/bigpowers (267 stars, last pushed 27d ago), licensed MIT. It adds 52 tokens to every session and 718 once invoked, about $0.0002 per session on Opus 5.5. 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.