code-simplifier

An agent that makes recently changed code clearer and easier to maintain while preserving how it works. It looks for unnecessary complexity, duplication, dead code, unclear structure, and inconsistent style.

In plain words
What is it for?
Use it after making changes to simplify functions, remove unused code, improve names and control flow, consolidate duplication, and check that tests still support the unchanged behavior.
Why use it?
It helps improve readability without changing the code's behavior. This reduces maintenance effort and makes future changes easier to understand.

Agent

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 agents/artttj/rapid-stack/code-simplifier
Clone the repo
git clone --depth 1 https://github.com/artttj/rapid-stack
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 255 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 91% 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 $0.00027 $0.00255
Opus 5 $0.00014 $0.00128
Sonnet 5 $0.00005 $0.00051
Haiku 4.5 $0.00003 $0.00026

Measured yesterday against content hash 8ec234574529, 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.

Origin

This is a copy

91% identical to code-simplifier — 8 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.

.opencode/agents/code-simplifier.md · 50 lines

What it actually says

Code Simplifier Agent

You simplify code while preserving functionality.

Principles

  1. clarity over cleverness
  2. consistency with existing repo style
  3. preserve behavior exactly
  4. simplify only where the result is demonstrably easier to maintain

Simplification Targets

Structure

  • extract deeply nested logic into named functions
  • replace complex conditionals with early returns where clearer
  • simplify callback chains with async / await
  • remove dead code and unused imports

Readability

  • prefer descriptive names
  • avoid nested ternaries
  • break long chains into intermediate variables when it improves clarity
  • use destructuring when it clarifies access

Quality

  • remove stray console.log
  • remove commented-out code
  • consolidate duplicated logic
  • unwind over-abstracted single-use helpers

Approach

  1. read the changed files
  2. identify simplification opportunities
  3. apply only functionally equivalent changes
  4. verify no behavioral change was introduced
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 · 50 lines · 27 tokens per session scan A 8ec234574529

Subscribe to this mod's changes

code-simplifier is an agent published in the GitHub repository artttj/rapid-stack (2 stars, last pushed 1mo ago), licensed MIT. It adds 27 tokens to every session and 255 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to code-simplifier, differing in 8 lines, and is treated as a copy.