Plugin Creator

What it does

When your agent uses it

• Tasks that involve Hooks and plugins
• Tasks that involve Project scaffolding

Example prompts

• “Use the plugin-creator skill to create opt-in plugin packs with manifests + module scaffolding for Claude/Codex”
• “/plugin-creator”

Requirements

• Pre-approved tools (allowed-tools): Read, Write, Edit, Bash, Grep, Glob

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

1. 1Capture scope -- what domain should the plugin pack own?
2. 2Pick packaging model -- domain pack, policy pack, or hook/observability pack?
3. 3Define manifest -- name, description, version, domain, compatibility, included assets
4. 4Select assets -- agents, skills, rules, hooks, docs, templates
5. 5Add scaffolding -- create plugin.json, README.md, and optional subdirectories
6. 6Validate -- manifest JSON, included asset references, executable hooks, documentation links

What it can do on your machine

Read from SKILL.md and the folder at commit d64db2b. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Write
  • Edit
  • Bash
  • Grep
  • Glob

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • jq

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Plugin Creator loads about 1.4k tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 618 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~37

When it runs · the whole SKILL.md, loaded when a task matches

~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Read, Write, Edit, Bash, Grep, Glob

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from softspark/ai-toolkit at commit d64db2b, republished under its Apache-2.0 licence (© softspark). 618 words, ~1,394 tokens.

name

plugin-creator

description

Creates opt-in plugin packs with manifests + module scaffolding for Claude/Codex. Triggers: new plugin, plugin pack, plugin scaffold.

allowed-tools

Read, Write, Edit, Bash, Grep, Glob

effort

high

disable-model-invocation

true

argument-hint

[plugin pack name or domain]

app/plugins/<plugin-name>/
├── plugin.json
├── README.md
├── agents/           # optional
├── skills/           # optional
├── hooks/            # optional
├── rules/            # optional
└── templates/        # optional

{
  "name": "memory-pack",
  "description": "Domain plugin pack for persistent cross-session memory.",
  "version": "1.0.0",
  "domain": "memory",
  "type": "plugin-pack",
  "status": "experimental",
  "requires": {
    "ai-toolkit": ">=1.0.0",
    "claude-code": ">=1.0.33"
  },
  "includes": {
    "agents": [],
    "skills": ["mem-search"],
    "rules": [],
    "hooks": ["observation-capture.sh", "session-summary.sh"]
  },
  "hook_events": {
    "observation-capture.sh": "PostToolUse",
    "session-summary.sh": "Stop"
  }
}

© softspark, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in app/skills/plugin-creator of softspark/ai-toolkit.

Open the folder on GitHubat commit d64db2b