opanel: Skill for Claude Code

.agents/skills/compare-version-modules/SKILL.md

compare-version-modules is a skill for Claude Code, Codex from opanel-mc/opanel. It costs 117 tokens per session (821 once invoked), scanned A, original, GPL-3.0.

A comparison guide for two server-platform modules targeting different Minecraft or game versions. It removes irrelevant differences such as package names and version strings so the remaining API and code-writing changes are easier to see.

In plain words
What is it for?
It is for comparing modules such as forge-1.21.5 and forge-1.21.8, identifying changed APIs, and finding differences in how the same feature must be implemented.
Why use it?
It helps developers distinguish real compatibility changes from simple version-label differences. This makes it easier to update or port code between platform versions.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is opanel-mc/opanel's own configuration. It tells Claude Code and Codex how to work on opanel itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything opanel configures →

Reuse

Borrowing it

Nothing to install: this file belongs to opanel-mc/opanel. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/opanel-mc/opanel/main/.agents/skills/compare-version-modules/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/opanel-mc/opanel

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 compare-version-modules

README.md
[![agentmods](https://agentmods.dev/badge/skills/opanel-mc/opanel/compare-version-modules/github.svg)](https://agentmods.dev/skills/opanel-mc/opanel/compare-version-modules)
Your own site
<a href="https://agentmods.dev/skills/opanel-mc/opanel/compare-version-modules"><img src="https://agentmods.dev/badge/skills/opanel-mc/opanel/compare-version-modules/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 compare-version-modules

Your own site · 80×15
<a href="https://agentmods.dev/skills/opanel-mc/opanel/compare-version-modules"><img src="https://agentmods.dev/badge/skills/opanel-mc/opanel/compare-version-modules.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 117 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 821 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 unknown 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 $0.00117 $0.00821
Opus 5.5 $0.00047 $0.00328
Sonnet 5.5 $0.00023 $0.00164
Haiku 4.5 $0.00012 $0.00082

Measured 2mo ago against content hash b2ecdffeecfb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

compare-version-modules 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 2mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/compare.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.agents/skills/compare-version-modules/SKILL.md · 64 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

1 file 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.

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. 2mo ago First seen · 64 lines · 117 tokens per session scan A b2ecdffeecfb

Subscribe to this mod's changes

compare-version-modules is a skill published in the GitHub repository opanel-mc/opanel (307 stars, last pushed yesterday), licensed GPL-3.0. It adds 117 tokens to every session and 821 once invoked, about $0.0005 per session on Opus 5.5. 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 2026-08-30.

Related

compare-version-modules compared with skills from other repositories

compare-version-modules next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
compare-version-modulesopanel-mc/opanelSkill307yesterdayGPL-3.0A117Claude Code, Codex
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minecraft-modpack-servernativ3ai/hermes-agent-camelSkill193yesterdayMITB19Claude Code, Codex
minecraft-modpack-serveraivrar/portable-hermes-agentSkill244yesterdayMITB19Claude Code, Codex
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minecraft-modpack-serverGGbond-bo/MemOmics-AgentSkill31yesterdayMITB19Claude Code, Codex
minecraft-modpack-serverraphaelmansuy/edgecrabSkill933mo agononeB48Claude Code, Codex