ryk

ryk is a plugin for Claude Code from christopherkarani/ryk. Its manifest loads nothing; the 5 skills it bundles cost 0 tokens per session together, scanned A, original, Apache-2.0.

A Claude Code plugin that adds ryk safety hooks and skills. Claude Code is a coding assistant that can run commands and change files; ryk checks those activities against policies.

In plain words
What is it for?
It helps run ryk health checks, policy checks, red-team test fixtures, replay checks, and hook-based safety checks from Claude Code.
Why use it?
It provides checks around agent actions and is configured to stop when its required safety setup is unavailable.

Plugin for Claude Code

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

Good fit It helps run ryk health checks, policy checks, red-team test fixtures, replay checks, and hook-based safety checks from Claude Code.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add christopherkarani/ryk
/plugin install ryk
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/christopherkarani/ryk

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 ryk

README.md
[![agentmods](https://agentmods.dev/badge/plugins/christopherkarani/ryk/claude-code-plugin/github.svg)](https://agentmods.dev/plugins/christopherkarani/ryk/claude-code-plugin)
Your own site
<a href="https://agentmods.dev/plugins/christopherkarani/ryk/claude-code-plugin"><img src="https://agentmods.dev/badge/plugins/christopherkarani/ryk/claude-code-plugin/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 ryk

Your own site · 80×15
<a href="https://agentmods.dev/plugins/christopherkarani/ryk/claude-code-plugin"><img src="https://agentmods.dev/badge/plugins/christopherkarani/ryk/claude-code-plugin.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 5 skills cost 0 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

ryk 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.

integrations/claude-code-plugin/.claude-plugin/plugin.json · 28 lines

What it actually says

{
    "name": "ryk",
    "version": "0.2.22",
    "description": "ryk safety hooks and skills for Claude Code.",
    "author": {
        "name": "ryk"
    },
    "homepage": "https://github.com/christopherkarani/ryk",
    "repository": "https://github.com/christopherkarani/ryk",
    "license": "Apache-2.0",
    "keywords": [
        "security",
        "ai-agents",
        "policy",
        "audit",
        "redteam",
        "ryk"
    ],
    "skills": "./skills/",
    "hooks": "./hooks/hooks.json",
    "interface": {
        "displayName": "ryk",
        "shortDescription": "Runtime firewall helpers for Claude Code.",
        "longDescription": "Run ryk doctor, policy checks, red-team fixtures, replay, and hook-based safety checks from Claude Code. Hooks use canonical ryk installation paths and fail closed when unavailable.",
        "developerName": "ryk"
    }
}
Contents

What it installs

The manifest is a name and a version. 5 skills travel with it, and installing the plugin installs all of them — 0 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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 First seen · 28 lines scan A 160ca20d63c8

Subscribe to this mod's changes

ryk is a plugin published in the GitHub repository christopherkarani/ryk (42 stars, last pushed 1mo ago), licensed Apache-2.0. 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 2026-08-30.

Related

Other plugins, from other repositories

bevy-plugin

Bevy game engine development - ECS, rendering, game architecture.

laurigates/claude-plugins · not measured

desktop-notification

Alert you when Claude Code needs input: an audible terminal bell, an OSC 9 terminal notification, and an OS-native toast (macOS/Linux) on permission and idle prompts.

melodic-software/claude-code-plugins · not measured

disk-hygiene

Context-aware disk hygiene for arbitrary directory trees: inventories orphaned and temporary artifacts, classifies evidence into review tiers, and offers exact-path cleanup only after a fresh safety preview and explicit per-tier approval. The target is read-only by default; OS-managed paths, links and mount points…

melodic-software/claude-code-plugins · not measured

fleet

Agent-to-agent reach across a personal fleet (fleet:reach): from any Claude Code lane (WSL or native Windows, any machine), run a script, prompt, or query and wait, message a session, or start a named session in another lane. Each lane signs into its own Claude account, so built-in peer tools see only their own lane.…

melodic-software/claude-code-plugins · not measured

explainer-video

Short explainer videos made with ManimCE, narrated when the speech plugin is installed and silent otherwise. The produce skill plans the beats, writes one scene script whose scene changes follow the narration's word timings, renders at low quality first, muxes narration and captions with ffmpeg, and checks every…

melodic-software/claude-code-plugins · not measured

firecrawl

Web scraping, search, crawling, and file parsing through the firecrawl-cli binary with a write-to-disk-then-Read pattern that keeps large results out of context: a user-facing wrapper skill, a lazy-install setup skill, and a separate gated maintainer update skill tracking the upstream CLI and skill source.

melodic-software/claude-code-plugins · not measured