refactor-safely

refactor-safely is a skill for Claude Code from MiaoY0uShan/FP. It costs 15 tokens per session (280 once invoked), scanned A, a copy of refactor-safely, MIT.

A method for planning and carrying out code changes by examining which parts of a codebase depend on each other. It can preview renames, identify unused code, and check the likely effects of a refactor.

In plain words
What is it for?
It helps find dead code, locate large functions to split, preview renames, suggest refactoring opportunities, and verify changes after they are applied.
Why use it?
It reduces the risk of breaking code when moving, renaming, or splitting things. Impact checks and change detection help show whether important code paths may be affected.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit It helps find dead code, locate large functions to split, preview renames…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/miaoy0ushan/fp/refactor-safely
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.

Any agent
npx skills add MiaoY0uShan/FP --skill refactor-safely
Clone the repo
git clone --depth 1 https://github.com/MiaoY0uShan/FP

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.

agentmods badge for refactor-safely

README.md
[![agentmods](https://agentmods.dev/badge/skills/miaoy0ushan/fp/refactor-safely.svg)](https://agentmods.dev/skills/miaoy0ushan/fp/refactor-safely)
Your own site
<a href="https://agentmods.dev/skills/miaoy0ushan/fp/refactor-safely"><img src="https://agentmods.dev/badge/skills/miaoy0ushan/fp/refactor-safely.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 280 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 100% copy Near-identical to another mod 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 $0.00015 $0.00280
Opus 5 $0.00008 $0.00140
Sonnet 5 $0.00003 $0.00056
Haiku 4.5 $0.00002 $0.00028

Measured 6d ago against content hash f67805226af5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

refactor-safely 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 6d 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.

Origin

This is a copy

100% identical to refactor-safely — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/refactor-safely/SKILL.md · 29 lines

What it actually says

Refactor Safely

Use the knowledge graph to plan and execute refactoring with confidence.

Steps

  1. Use refactor_tool with mode="suggest" for community-driven refactoring suggestions.
  2. Use refactor_tool with mode="dead_code" to find unreferenced code.
  3. For renames, use refactor_tool with mode="rename" to preview all affected locations.
  4. Use apply_refactor_tool with the refactor_id to apply renames.
  5. After changes, run detect_changes_tool to verify the refactoring impact.

Safety Checks

  • Always preview before applying (rename mode gives you an edit list).
  • Check get_impact_radius_tool before major refactors.
  • Use get_affected_flows_tool to ensure no critical paths are broken.
  • Run find_large_functions to identify decomposition targets.

Token Efficiency Rules

  • ALWAYS start with get_minimal_context(task="<your task>") before any other graph tool.
  • Use detail_level="minimal" on all calls. Only escalate to "standard" when minimal is insufficient.
  • Target: complete any review/debug/refactor task in ≤5 tool calls and ≤800 total output tokens.
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. 6d ago First seen · 29 lines · 15 tokens per session scan A f67805226af5

Subscribe to this mod's changes

refactor-safely is a skill published in the GitHub repository MiaoY0uShan/FP (3 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 280 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to refactor-safely, differing in 2 lines, and is treated as a copy.

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