Borrowing it
Nothing to install: this file belongs to susomejias/rembric. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/susomejias/rembric/main/.agents/skills/plugin-creator/SKILL.mdgit clone --depth 1 https://github.com/susomejias/rembricWrote 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.
[](https://agentmods.dev/skills/susomejias/rembric/plugin-creator)<a href="https://agentmods.dev/skills/susomejias/rembric/plugin-creator"><img src="https://agentmods.dev/badge/skills/susomejias/rembric/plugin-creator/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.
<a href="https://agentmods.dev/skills/susomejias/rembric/plugin-creator"><img src="https://agentmods.dev/badge/skills/susomejias/rembric/plugin-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00077 | $0.01460 |
| Opus 5.5 | $0.00031 | $0.00584 |
| Sonnet 5.5 | $0.00015 | $0.00292 |
| Haiku 4.5 | $0.00008 | $0.00146 |
Grade A, and why
plugin-creator 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.
This is a copy
100% identical to plugin-creator — 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.
How it starts
The opening of the file, as written. The whole thing — 161 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Plugin Creator
Quick Start
- Run the scaffold script:
# Plugin names are normalized to lower-case hyphen-case and must be <= 64 chars.
# The generated folder and plugin.json name are always the same.
# Run from repo root (or replace .agents/... with the absolute path to this SKILL).
# By default creates in <repo_root>/plugins/<plugin-name>.
python3 .agents/skills/plugin-creator/scripts/create_basic_plugin.py <plugin-name>
-
Open
<plugin-path>/.codex-plugin/plugin.jsonand replace[TODO: ...]placeholders. -
Generate or update the repo marketplace entry when the plugin should appear in Codex UI ordering:
# marketplace.json always lives at <repo-root>/.agents/plugins/marketplace.json
python3 .agents/skills/plugin-creator/scripts/create_basic_plugin.py my-plugin --with-marketplace
For a home-local plugin, treat <home> as the root and use:
python3 .agents/skills/plugin-creator/scripts/create_basic_plugin.py my-plugin \
--path ~/plugins \
--marketplace-path ~/.agents/plugins/marketplace.json \
--with-marketplace
- Generate/adjust optional companion folders as needed:
python3 .agents/skills/plugin-creator/scripts/create_basic_plugin.py my-plugin --path <parent-plugin-directory> \
--with-skills --with-hooks --with-scripts --with-assets --with-mcp --with-apps --with-marketplace
<parent-plugin-directory> is the directory where the plugin folder <plugin-name> will be created (for example ~/code/plugins).
What this skill creates
- If the user has not made the plugin location explicit, ask whether they want a repo-local plugin or a home-local plugin before generating marketplace entries.
- Creates plugin root at
/<parent-plugin-directory>/<plugin-name>/. - Always creates
/<parent-plugin-directory>/<plugin-name>/.codex-plugin/plugin.json. - Fills the manifest with the full schema shape, placeholder values, and the complete
interfacesection. - Creates or updates
<repo-root>/.agents/plugins/marketplace.jsonwhen--with-marketplaceis set.- If the marketplace file does not exist yet, seed top-level
nameplusinterface.displayNameplaceholders before adding the first plugin entry.
- If the marketplace file does not exist yet, seed top-level
<plugin-name>is normalized using skill-creator naming rules:My Plugin→my-pluginMy--Plugin→my-plugin- underscores, spaces, and punctuation are converted to
- - result is lower-case hyphen-delimited with consecutive hyphens collapsed
- Supports optional creation of:
skills/hooks/scripts/assets/.mcp.json.app.json
What ships with it
4 files beside SKILL.md 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.
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.
- 1mo ago First seen · 161 lines · 77 tokens per session scan A 3b43cb214f45
plugin-creator is a skill published in the GitHub repository susomejias/rembric (14 stars, last pushed 3d ago), licensed MIT. It adds 77 tokens to every session and 1,460 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to plugin-creator, differing in 0 lines, and is treated as a copy.
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