anthropics--claude-plugins-official--writing-rules

anthropics--claude-plugins-official--writing-rules is a plugin for Claude Code from tomevault-io/claude-code-plugins. Its token cost is not measured, scanned A, original, no licence file.

A writing guide for Hookify rules. Hookify is a system for defining automatic checks that run when specified patterns or events occur.

In plain words
What is it for?
Use it when writing, adding, or configuring a Hookify rule.
Why use it?
It helps you create or configure these rules without having to work out their syntax and matching patterns alone.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it when writing, adding, or configuring a Hookify rule.

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Install in Claude Code
/plugin marketplace add tomevault-io/claude-code-plugins/plugin install anthropics--claude-plugins-official--writing-rules
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/tomevault-io/claude-code-plugins

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 anthropics--claude-plugins-official--writing-rules

README.md
[![agentmods](https://agentmods.dev/badge/plugins/tomevault-io/claude-code-plugins/anthropics-claude-plugins-official-writing-rules.svg)](https://agentmods.dev/plugins/tomevault-io/claude-code-plugins/anthropics-claude-plugins-official-writing-rules)
Your own site
<a href="https://agentmods.dev/plugins/tomevault-io/claude-code-plugins/anthropics-claude-plugins-official-writing-rules"><img src="https://agentmods.dev/badge/plugins/tomevault-io/claude-code-plugins/anthropics-claude-plugins-official-writing-rules.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
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.
Security

Grade A, and why

anthropics--claude-plugins-official--writing-rules 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 7d 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.

anthropics--claude-plugins-official--writing-rules/.claude-plugin/plugin.json · 14 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 7d ago First seen · 14 lines scan A 7b800ae408f0

Subscribe to this mod's changes

anthropics--claude-plugins-official--writing-rules is a plugin published in the GitHub repository tomevault-io/claude-code-plugins (3 stars, last pushed today), with no licence file. 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.