llm-do: Agent for Claude Code

.claude/skills/decomplect-py/agents/simplicity-analyzer.md

simplicity-analyzer is an agent for Claude Code from zby/llm-do. It costs 75 tokens per session (1,338 once invoked), scanned A, original, no licence file.

A Python code-review agent based on Rich Hickey’s ideas about keeping software simple. It looks for tangled concerns, unnecessary state, and functions that are not kept pure, meaning they do not change things outside themselves.

In plain words
What is it for?
Use it when reviewing Python design for unnecessary complexity, mixed responsibilities, or excessive reliance on changing state.
Why use it?
It helps identify complexity that makes code harder to understand, change, or reason about.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is zby/llm-do's own configuration. It tells Claude Code how to work on llm-do itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything llm-do configures →

View source ↗ zby/llm-do
Reuse

Borrowing it

Nothing to install: this file belongs to zby/llm-do. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/zby/llm-do/main/.claude/skills/decomplect-py/agents/simplicity-analyzer.md
Clone the repo
git clone --depth 1 https://github.com/zby/llm-do

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 simplicity-analyzer

README.md
[![agentmods](https://agentmods.dev/badge/agents/zby/llm-do/simplicity-analyzer/github.svg)](https://agentmods.dev/agents/zby/llm-do/simplicity-analyzer)
Your own site
<a href="https://agentmods.dev/agents/zby/llm-do/simplicity-analyzer"><img src="https://agentmods.dev/badge/agents/zby/llm-do/simplicity-analyzer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for simplicity-analyzer

Your own site · 80×15
<a href="https://agentmods.dev/agents/zby/llm-do/simplicity-analyzer"><img src="https://agentmods.dev/badge/agents/zby/llm-do/simplicity-analyzer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 75 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,338 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 unknown 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 5.1 $0.00075 $0.01338
Opus 5.5 $0.00030 $0.00535
Sonnet 5.5 $0.00015 $0.00268
Haiku 4.5 $0.00007 $0.00134

Measured 2mo ago against content hash fe28f091eefb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

simplicity-analyzer 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 2mo 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.

.claude/skills/decomplect-py/agents/simplicity-analyzer.md · 204 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 2mo ago First seen · 204 lines · 75 tokens per session scan A fe28f091eefb

Subscribe to this mod's changes

simplicity-analyzer is an agent published in the GitHub repository zby/llm-do (21 stars, last pushed 8mo ago), with no licence file. It adds 75 tokens to every session and 1,338 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-08-30.

Related

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