kanso

kanso is a plugin for Claude Code from blakecyze/kanso. Its manifest loads nothing; the 11 skills, 1 hook it bundles cost 611 tokens per session together, scanned A, original, MIT.

A set of Claude Code skills for keeping AI-written code concise, maintainable, and reviewed.

In plain words
What is it for?
Use it when generating, refactoring, or reviewing code for simplicity and long-term maintenance.
Why use it?
It helps prevent unnecessary code from accumulating by encouraging deletion and requiring a reason for each new line.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest. Also seen: mentions Claude Code.

Good fit Use it when generating, refactoring, or reviewing code for simplicity and long-term maintenance.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add blakecyze/kanso
/plugin install kanso
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.

Clone the repo
git clone --depth 1 https://github.com/blakecyze/kanso

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 kanso

README.md
[![agentmods](https://agentmods.dev/badge/plugins/blakecyze/kanso/kanso/github.svg)](https://agentmods.dev/plugins/blakecyze/kanso/kanso)
Your own site
<a href="https://agentmods.dev/plugins/blakecyze/kanso/kanso"><img src="https://agentmods.dev/badge/plugins/blakecyze/kanso/kanso/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 kanso

Your own site · 80×15
<a href="https://agentmods.dev/plugins/blakecyze/kanso/kanso"><img src="https://agentmods.dev/badge/plugins/blakecyze/kanso/kanso.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 11 skills, 1 hook cost 611 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

kanso 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 1mo 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-plugin/plugin.json · 22 lines

What it actually says

{
  "name": "kanso",
  "version": "0.6.0",
  "description": "Claude Code skills that keep AI-written code short and honest. Delete before you add, earn every line.",
  "author": {
    "name": "Blake Cyze",
    "url": "https://cyze.dev"
  },
  "homepage": "https://github.com/blakecyze/kanso",
  "repository": "https://github.com/blakecyze/kanso",
  "license": "MIT",
  "keywords": [
    "claude-code",
    "skills",
    "code-quality",
    "anti-slop",
    "refactor",
    "code-review",
    "maintainability"
  ]
}
Files

What ships with it

1 file beside plugin.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago Changed 2b8651bfd311
  2. 1mo ago First seen · 22 lines scan A 44ded9a66b0f

Subscribe to this mod's changes

kanso is a plugin published in the GitHub repository blakecyze/kanso (4 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.