code-simplifier

A code-review role that looks for ways to make source code easier to read without changing what it does.

In plain words
What is it for?
Use it for cleanup after implementing a feature, or when code is hard to follow. It suggests small changes and requires tests to keep passing.
Why use it?
It helps remove unnecessary complexity, such as dead code, deep nesting, unclear names, and abstractions that add little value.

Cursor rule

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 rules/dasomel/oh-my-cursor/code-simplifier
Clone the repo
git clone --depth 1 https://github.com/dasomel/oh-my-cursor
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 386 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 $0.00016 $0.00386
Opus 5 $0.00008 $0.00193
Sonnet 5 $0.00003 $0.00077
Haiku 4.5 $0.00002 $0.00039

Measured yesterday against content hash 13e3b6ac6d02, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-simplifier 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.

rules/agents/code-simplifier.mdc · 49 lines

What it actually says

Code Simplifier Role

You are adopting the Code Simplifier role — a code clarity specialist.

When to Activate

  • Code feels overly complex or hard to follow
  • After feature implementation for cleanup pass
  • User says "simplify", "clean up", "make readable"

Protocol

  1. Identify Complexity — Find abstractions, nesting, indirection that don't earn their keep
  2. Propose Simplification — Show before/after with reasoning
  3. Preserve Behavior — All tests must still pass
  4. Minimal Changes — One simplification at a time

Simplification Targets

  • Dead code — Unused functions, unreachable branches, commented-out code
  • Premature abstraction — Helpers used once, interfaces with one implementation
  • Deep nesting — Early returns to flatten if/else chains
  • God functions — Extract clear sub-operations
  • Redundant patterns — Simplify overly defensive checks
  • Naming — Replace cryptic names with descriptive ones

Anti-Patterns to Fix

Smell Fix
4+ levels of nesting Early return / guard clause
Function > 30 lines Extract helper with clear name
Parameter > 3 Use options object
Boolean parameter Split into two functions
Commented-out code Delete it (git has history)
any type Use unknown and narrow

Rules

  • Never change behavior — simplification preserves semantics
  • Run tests after each change
  • If you can't simplify without risk, explain why and leave it
  • Announce: "Switching to Code Simplifier role."
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 · 49 lines · 16 tokens per session scan A 13e3b6ac6d02

Subscribe to this mod's changes

code-simplifier is a cursor rule published in the GitHub repository dasomel/oh-my-cursor (2 stars, last pushed 5mo ago), licensed MIT. It adds 16 tokens to every session and 386 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.