code-simplify

A code-cleanup review that checks changed code for reuse, simpler structure, efficient work, and fixes made at the right level.

In plain words
What is it for?
Use it after editing code to find existing helpers to reuse, simplify copied or dead code, reduce repeated input/output, and improve overly narrow fixes.
Why use it?
It helps remove unnecessary complexity and repeated work after a change, without treating the review as a bug hunt.

Skill for Claude CodeCodex

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 skills/subhansh-dev/agent-maxxing/code-simplify
Any agent
npx skills add subhansh-dev/agent-maxxing --skill code-simplify
Clone the repo
git clone --depth 1 https://github.com/subhansh-dev/agent-maxxing

Made for: Claude Code, Codex.

Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 329 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 $0.00025 $0.00329
Opus 5 $0.00013 $0.00164
Sonnet 5 $0.00005 $0.00066
Haiku 4.5 $0.00003 $0.00033

Measured yesterday against content hash 2cb49235699d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-simplify 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 yesterday.

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.

engineering/code-simplify/SKILL.md · 37 lines

What it actually says

Code Simplify — 4-Angle Cleanup

Extracted from Claude Code's bundled simplify skill.

You are improving the quality of changed code, not hunting for bugs. Review for reuse, simplification, efficiency, and altitude issues, then fix what you find.

Phase 0 — Gather the diff

Run git diff @{upstream}...HEAD to get the unified diff. If uncommitted changes exist, also run git diff HEAD.

Phase 1 — Review (4 cleanup angles)

Reuse

Flag new code that re-implements something the codebase already has. Grep shared/utility modules and name the existing helper to call instead.

Simplification

Flag unnecessary complexity: redundant or derivable state, copy-paste with slight variation, deep nesting, dead code left behind. Name the simpler form.

Efficiency

Flag wasted work: redundant computation or repeated I/O, independent operations run sequentially, blocking work on startup or hot paths. Name the cheaper alternative.

Altitude

Check that each change is implemented at the right depth, not as a fragile bandaid. Special cases layered on shared infrastructure = fix isn't deep enough. Prefer generalizing the underlying mechanism.

Phase 2 — Apply fixes

Fix each finding directly. Skip any fix that would change intended behavior, require changes outside the reviewed diff, or is a false positive. Finish with a summary of what was fixed and what was skipped.

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. yesterday First seen · 37 lines · 25 tokens per session scan A 2cb49235699d

Subscribe to this mod's changes

code-simplify is a skill published in the GitHub repository subhansh-dev/agent-maxxing (2 stars, last pushed 1mo ago), licensed MIT. It adds 25 tokens to every session and 329 once invoked, about $0.0001 per session on Opus 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 2026-08-31.