refactor

A guided code-cleanup procedure that checks tests and types before, during, and after changing existing code.

In plain words
What is it for?
Use it to plan smaller refactoring steps, update affected call sites and imports, run tests, type checks, and linting, remove unused code, and record the work as a separate refactoring commit.
Why use it?
It reduces the risk of breaking current behavior while reorganizing code, especially when changes affect several files or a public interface.

Command for Claude Code

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 commands/mixedbread-ai/mgrep/refactor
Clone the repo
git clone --depth 1 https://github.com/mixedbread-ai/mgrep

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 280 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 $0.00000 $0.00280
Opus 5 $0.00000 $0.00140
Sonnet 5 $0.00000 $0.00056
Haiku 4.5 $0.00000 $0.00028

Measured 2d ago against content hash db99d546914a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

.claude/commands/refactor.md · 42 lines

What it actually says

Refactor

Safely refactor code while maintaining functionality.

Arguments

  • $ARGUMENTS - Description of what to refactor and why

Steps

  1. Ensure test coverage

    • Run existing tests: pnpm test
    • If coverage is insufficient, add tests first before refactoring
  2. Plan the refactoring

    • Identify all files that will be affected
    • List the changes needed in each file
    • Consider breaking large refactors into smaller commits
  3. Make incremental changes

    • Change one thing at a time
    • After each change, run: pnpm typecheck
    • Commit working states frequently
  4. Maintain backward compatibility (if public API)

    • Keep function signatures the same where possible
    • If signatures must change, update all call sites
  5. Verify after completion

    • Run full test suite: pnpm test
    • Run type check: pnpm typecheck
    • Run lint: pnpm lint
  6. Clean up

    • Remove any dead code
    • Update imports if file paths changed
    • Update documentation if needed
  7. Commit with proper message

    • Use format: refactor(scope): description
    • Keep refactoring commits separate from feature/fix commits
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 · 42 lines · 0 tokens per session scan A db99d546914a

Subscribe to this mod's changes

refactor is a command published in the GitHub repository mixedbread-ai/mgrep (4,388 stars, last pushed 4mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 280 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 2026-08-30.