a0-contribute-plugin

a0-contribute-plugin is a skill for Claude Code, Codex from Gen-Verse/PAST-Bench. It costs 74 tokens per session (2,042 once invoked), scanned A, original, Apache-2.0.

A guide for publishing an Agent Zero plugin to the community Plugin Index, a catalogue where other users can find and install shared plugins. It covers repository setup, validation, and pull-request submission.

In plain words
What is it for?
Use it to prepare a plugin repository, create its index entry, validate the package, and submit it to the community catalogue.
Why use it?
It explains the required repository layout and publishing checks, reducing errors when making a working local plugin available to others.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to prepare a plugin repository, create its index entry, validate the package, and submit it to the community catalogue.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gen-verse/past-bench/a0-contribute-plugin
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.

Any agent
npx skills add Gen-Verse/PAST-Bench --skill a0-contribute-plugin
Clone the repo
git clone --depth 1 https://github.com/Gen-Verse/PAST-Bench

Made for: Claude Code, Codex.

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 a0-contribute-plugin

README.md
[![agentmods](https://agentmods.dev/badge/skills/gen-verse/past-bench/a0-contribute-plugin/github.svg)](https://agentmods.dev/skills/gen-verse/past-bench/a0-contribute-plugin)
Your own site
<a href="https://agentmods.dev/skills/gen-verse/past-bench/a0-contribute-plugin"><img src="https://agentmods.dev/badge/skills/gen-verse/past-bench/a0-contribute-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 a0-contribute-plugin

Your own site · 80×15
<a href="https://agentmods.dev/skills/gen-verse/past-bench/a0-contribute-plugin"><img src="https://agentmods.dev/badge/skills/gen-verse/past-bench/a0-contribute-plugin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,042 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Agent Snooping · line 237
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 238
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
How audits are shown
Origin original No closer match found 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 $0.00074 $0.02042
Opus 5 $0.00037 $0.01021
Sonnet 5 $0.00015 $0.00408
Haiku 4.5 $0.00007 $0.00204

Measured 9d ago against content hash 2dfb202f6279, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

a0-contribute-plugin scanned grade A with 1 finding 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 9d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s https://raw.githubusercontent.com/<user>/<repo>/main/plugin.yaml | grep "^name:"
agents/agent-zero/skills/a0-contribute-plugin/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Zero Plugin Contribution

This skill guides publishing a plugin to the Plugin Index, making it discoverable and installable by all Agent Zero users.


Prerequisites

Before starting, verify:

  1. Plugin exists and works locally in /a0/usr/plugins/<name>/
  2. Plugin has been reviewed - if not, offer to run a0-review-plugin first:

    "I recommend running a full review before contributing. Should I do that now?"

  3. User has a GitHub account and git / gh CLI available

Step 0: Ask Automation Preference

Before doing any git work, ask:

"Do you want me to handle the git operations (fork, branch, commit, PR) automatically, or would you prefer I give you the steps to run manually?"

  • Automatic: proceed using gh and git commands via the code execution tool
  • Manual: provide exact commands at each step for the user to run

Step 1: Prepare the Plugin GitHub Repository

The plugin must live in its own standalone GitHub repository with plugin contents at the repo root (not inside a subfolder).

Required repo structure

your-plugin-repo/           <- GitHub repository root
├── plugin.yaml             <- runtime manifest (REQUIRED)
├── README.md               <- strongly recommended (shown in Plugin Hub detail view)
├── LICENSE                 <- REQUIRED for Plugin Index submission (place at repo root)
├── default_config.yaml     <- optional
├── api/                    <- API handlers
├── tools/                  <- agent tools
├── helpers/                <- shared Python logic
├── prompts/                <- prompt templates
├── agents/                 <- agent profiles
├── conf/                   <- config files (e.g. model_providers.yaml)
├── extensions/             <- lifecycle, UI, and implicit @extensible hooks
└── webui/                  <- frontend pages, stores, components

Inside extensions/, use python/<point>/ for named lifecycle hooks, python/_functions/<module>/<qualname>/<start|end>/ for implicit @extensible hooks, and webui/<point>/ for UI breakpoints. Do not publish the retired flattened python/<module>_<qualname>_<start|end>/ form.

Read the full file on GitHub · 239 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. 9d ago First seen · 239 lines · 74 tokens per session scan A 2dfb202f6279

Subscribe to this mod's changes

a0-contribute-plugin is a skill published in the GitHub repository Gen-Verse/PAST-Bench (25 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 74 tokens to every session and 2,042 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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