A command for reorganising one file according to the project's documented rules. Refactoring means changing code structure while keeping its intended behaviour.

For reading the target and project guidance, then splitting, typing, extracting, and cleaning the file. In dry-run mode it reports proposed changes without modifying files, and it can create a feature branch when started on the main branch.

It reduces the risk of changing code without understanding project conventions, architecture, or type-checking requirements.

How TheDecipherist/claude-code-mastery-project-starter-kit configures

Reuse

Borrowing it

Nothing to install: this file belongs to TheDecipherist/claude-code-mastery-project-starter-kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/TheDecipherist/claude-code-mastery-project-starter-kit/main/.claude/commands/refactor.md

Clone the repo

git clone --depth 1 https://github.com/TheDecipherist/claude-code-mastery-project-starter-kit

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/thedecipherist/claude-code-mastery-project-starter-kit/refactor/github.svg)](https://agentmods.dev/commands/thedecipherist/claude-code-mastery-project-starter-kit/refactor)

Your own site

<a href="https://agentmods.dev/commands/thedecipherist/claude-code-mastery-project-starter-kit/refactor"><img src="https://agentmods.dev/badge/commands/thedecipherist/claude-code-mastery-project-starter-kit/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/thedecipherist/claude-code-mastery-project-starter-kit/refactor"><img src="https://agentmods.dev/badge/commands/thedecipherist/claude-code-mastery-project-starter-kit/refactor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 2,281 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.

Model	Per session	Once invoked
Fable 5.1	$0.00017	$0.02281
Opus 5.5	$0.00007	$0.00912
Sonnet 5.5	$0.00003	$0.00456
Haiku 4.5	$0.00002	$0.00228

Measured 2mo ago against content hash 5a3da2d4a9ec, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 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.

.claude/commands/refactor.md · 268 lines

How it starts

The opening of the file, as written. The whole thing — 268 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Refactor — Best Practices Enforcement

Refactor the target file following every rule in this project's CLAUDE.md.

Target: $ARGUMENTS

If --dry-run is passed, report what WOULD change without modifying any files.

Step 0 — Auto-Branch (if on main)

Before making any changes, check the current branch:

git branch --show-current

Default behavior (auto_branch = true in claude-mastery-project.conf):

If on main or master: automatically create a feature branch and switch to it:
```
git checkout -b refactor/<filename-without-extension>
```
Report: "Created branch refactor/<name> — main stays untouched."
If already on a feature branch: proceed
If not a git repo: skip this check

To disable: Set auto_branch = false in claude-mastery-project.conf. When disabled, warn and ask the user before proceeding on main.

Step 0.5 — Read Before Touching

NEVER refactor blind. Read these files first:

The target file (fully — every line)
CLAUDE.md — to know the current project rules
project-docs/ARCHITECTURE.md — to understand where things belong (if it exists)
tsconfig.json — to check TypeScript strict mode settings (if it exists)

Also check:

# What imports this file? (understand the blast radius)
# Search for the filename in all source files

Report: "This file is imported by X other files. Changes here affect: [list]"

Step 1 — Audit the File

Run through EVERY check below. For each violation found, note the line number, what's wrong, and what the fix is.

1A. File Size (Rule 7: Quality Gates)

> 300 lines = MUST split. No exceptions.
Identify logical sections that can become their own files
Group by: types, constants, helpers/utilities, main logic, exports

1B. Function Size (Rule 7: Quality Gates)

> 50 lines = MUST extract. No exceptions.
Identify functions that do multiple things — each "thing" becomes its own function
Name extracted functions by what they DO, not where they came from

Read the full file on GitHub · 268 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.

2mo ago First seen · 268 lines · 17 tokens per session scan A 5a3da2d4a9ec

Subscribe to this mod's changes

refactor is a command published in the GitHub repository TheDecipherist/claude-code-mastery-project-starter-kit (342 stars, last pushed 4mo ago), licensed MIT. It adds 17 tokens to every session and 2,281 once invoked, about $0.0001 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 2026-08-30.

Code review

refactor next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
refactorTheDecipherist/claude-code-mastery-project-starter-kit	Command	342	4mo ago	MIT	A	17	Claude Code
diff-reviewcoco-research/coco	Command	785	yesterday	Apache-2.0	A	11	Claude Code
review-branchdamusix/atomic-claude	Command	115	4d ago	MIT	A	35	Claude Code
refactorRchGrav/claudebox	Command	1.2k	1mo ago	MIT	A	9	Claude Code
spec-trace-requirementsrjmurillo/ai-agents	Command	49	yesterday	MIT	A	0	GitHub Copilot
merge-conflict-analysisrjmurillo/ai-agents	Command	49	yesterday	MIT	A	0	GitHub Copilot
initazrtydxb/procoder	Command	211	11d ago	Apache-2.0	A	16	Claude Code

claude-code-mastery-project-starter-kit: Command for Claude Code