init

init is a command for Claude Code from ArcBlock/agent-skills. It costs 13 tokens per session (753 once invoked), scanned A, a copy of init, MIT.

A command that creates the standard folders and starter files for a new Claude Code plugin. It checks that the plugin name is provided in lowercase hyphenated form.

In plain words
What is it for?
Creating plugin metadata, command, agent, skill, hook, script, and README files from a plugin name.
Why use it?
It removes the repetitive setup work and gives a new plugin a consistent starting structure.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions .claude-plugin; positional $N argument; mentions Claude Code.

Part of the plugin-development plugin — 1 skill, 7 commands, 1 agent shipped together

Good fit Creating plugin metadata, command, agent, skill, hook, script, and README files from a plugin name.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/arcblock/agent-skills/init
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/ArcBlock/agent-skills

Made for: Claude Code.

Or install plugin-development, the plugin that ships this one along with the rest of its 1 skill, 7 commands, 1 agent.

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 init

README.md
[![agentmods](https://agentmods.dev/badge/commands/arcblock/agent-skills/init/github.svg)](https://agentmods.dev/commands/arcblock/agent-skills/init)
Your own site
<a href="https://agentmods.dev/commands/arcblock/agent-skills/init"><img src="https://agentmods.dev/badge/commands/arcblock/agent-skills/init/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 init

Your own site · 80×15
<a href="https://agentmods.dev/commands/arcblock/agent-skills/init"><img src="https://agentmods.dev/badge/commands/arcblock/agent-skills/init.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 753 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 100% copy Near-identical to another mod 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 $0.00013 $0.00753
Opus 5.5 $0.00005 $0.00301
Sonnet 5.5 $0.00003 $0.00151
Haiku 4.5 $0.00001 $0.00075

Measured 1mo ago against content hash 2ad5ef2dcb47, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

init 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.

Origin

This is a copy

100% identical to init — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/plugin-development/commands/init.md · 150 lines

How it starts

The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Initialize Plugin

Create the standard directory structure and files for a new Claude Code plugin.

Arguments

  • $1 (required): Plugin name in kebab-case (e.g., my-awesome-plugin)

What This Command Does

  1. Creates the plugin directory structure:
    • .claude-plugin/ with plugin.json
    • commands/ directory
    • agents/ directory
    • skills/ directory
    • hooks/ directory with hooks.json
    • scripts/ directory
  2. Generates a starter plugin.json with the provided name
  3. Creates a README.md template
  4. Provides next steps

Instructions

Validation

First, validate the plugin name:

  • Must be provided (not empty)
  • Should be kebab-case (lowercase with hyphens)
  • Should not contain spaces or special characters

If validation fails, explain the requirements and ask for a valid name.

Create Directory Structure

Create these directories:

$1/
├── .claude-plugin/
├── commands/
├── agents/
├── skills/
├── hooks/
└── scripts/

Create plugin.json

Create .claude-plugin/plugin.json with this template:

{
  "name": "$1",
  "version": "0.1.0",
  "description": "Brief description of what this plugin does",
  "author": {
    "name": "Your Name",
    "email": "[email protected]"
  },
  "license": "MIT",
  "keywords": ["keyword1", "keyword2"]
}

Create hooks.json

Create hooks/hooks.json with a basic structure:

{
  "description": "Plugin hooks",
  "hooks": {}
}

Create README.md

Create README.md with this template:

# $1

[Brief description of what this plugin does]

## Installation

```bash
/plugin install $1@marketplace-name

Commands

[List commands here]

Usage

[Provide examples]


### Create Validation Script

Create `scripts/validate-plugin.sh` with executable permissions:

```bash
#!/usr/bin/env bash
set -euo pipefail

# Basic plugin structure validation
[ -f ".claude-plugin/plugin.json" ] || { echo "Missing plugin.json" >&2; exit 2; }
exit 0

Make it executable: chmod +x scripts/validate-plugin.sh

Read the full file on GitHub · 150 lines

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 · 150 lines · 13 tokens per session scan A 2ad5ef2dcb47

Subscribe to this mod's changes

init is a command published in the GitHub repository ArcBlock/agent-skills (5 stars, last pushed 13d ago), licensed MIT. It adds 13 tokens to every session and 753 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to init, differing in 0 lines, and is treated as a copy.