aider

A reusable set of instructions for Aider, a command-line coding assistant, to follow when refactoring code. It can be loaded as a system prompt or project conventions file.

In plain words
What is it for?
Use it to break up long functions, extract logic, replace nested conditions with guard clauses, and make other structured code changes while checking tests.
Why use it?
It gives Aider a consistent refactoring process instead of relying on ad-hoc requests. It also runs the project's detected tests after each step.

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/muhiminosim/code-refactoring-skill/aider
Clone the repo
git clone --depth 1 https://github.com/MuhiminOsim/code-refactoring-skill
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 353 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00353
Opus 5 $0.00000 $0.00177
Sonnet 5 $0.00000 $0.00071
Haiku 4.5 $0.00000 $0.00035

Measured 2d ago against content hash 30474b1ff16f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aider scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

aider --system-prompt "$(curl -s https://raw.githubusercontent.com/MuhiminOsim/code-refactoring-skill/main/PROMPT.md)"
agents/aider.md · 64 lines

What it actually says

Setup: Aider

Option A: System Prompt Flag

Pass PROMPT.md as a system prompt on every session:

aider --system-prompt "$(curl -s https://raw.githubusercontent.com/MuhiminOsim/code-refactoring-skill/main/PROMPT.md)"

Or clone first and reference locally:

git clone https://github.com/MuhiminOsim/code-refactoring-skill ~/.aider-refactor-skill

aider --system-prompt "$(cat ~/.aider-refactor-skill/PROMPT.md)"

Option B: .aider.conf.yml

Add to your project's .aider.conf.yml:

system-prompt: |
  # paste PROMPT.md contents here

Or reference a file (if your aider version supports it):

read:
  - ~/.aider-refactor-skill/PROMPT.md

Option C: CONVENTIONS.md

Aider automatically reads CONVENTIONS.md if present in the project root:

cp ~/.aider-refactor-skill/PROMPT.md CONVENTIONS.md

Usage

aider src/orders.py

> Refactor the process_order function — it's too long

> Extract the discount calculation into a separate function

> Replace these nested if-statements with guard clauses

Aider will follow the full 5-phase process and run pytest (or your detected test command) after each step.

With Reference Files

Add specific catalog files to the aider session as needed:

aider src/orders.py ~/.aider-refactor-skill/references/catalog-composing.md
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 · 64 lines · 0 tokens per session scan A 30474b1ff16f

Subscribe to this mod's changes

aider is an agent published in the GitHub repository MuhiminOsim/code-refactoring-skill (5 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 353 tokens. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.