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rustycore: Skill for Codex

.agents/skills/design-rustycore-architecture/SKILL.md

design-rustycore-architecture is a skill for Codex from alseif0x/rustycore. It costs 59 tokens per session (1,373 once invoked), scanned A, original, GPL-3.0.

A guide for designing and reviewing RustyCore's software structure using evidence from its current Rust code and older C++ server.

In plain words
What is it for?
Use it when choosing crate or module boundaries, assigning ownership of shared state, or breaking up large project-wide components.
Why use it?
It helps decide where code and state belong and untangle dependencies across major areas such as sessions, handlers, maps, players, and worlds.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

This is alseif0x/rustycore's own configuration. It tells Codex how to work on rustycore 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 rustycore configures →

not rated 33repo +1 changed 1mo ago A scan 59 tokens GPL-3.0
View source ↗ alseif0x/rustycore alseif0x.github.io
Reuse

Borrowing it

Nothing to install: this file belongs to alseif0x/rustycore. 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/alseif0x/rustycore/forever/.agents/skills/design-rustycore-architecture/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/alseif0x/rustycore

Made for: 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 design-rustycore-architecture

README.md
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Your own site
<a href="https://agentmods.dev/skills/alseif0x/rustycore/design-rustycore-architecture"><img src="https://agentmods.dev/badge/skills/alseif0x/rustycore/design-rustycore-architecture/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 design-rustycore-architecture

Your own site · 80×15
<a href="https://agentmods.dev/skills/alseif0x/rustycore/design-rustycore-architecture"><img src="https://agentmods.dev/badge/skills/alseif0x/rustycore/design-rustycore-architecture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,373 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 $0.00059 $0.01373
Opus 5.5 $0.00024 $0.00549
Sonnet 5.5 $0.00012 $0.00275
Haiku 4.5 $0.00006 $0.00137

Measured 1mo ago against content hash 0aa897af188b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

design-rustycore-architecture 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.

.agents/skills/design-rustycore-architecture/SKILL.md · 109 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. 1mo ago Changed · +3 lines 0aa897af188b
  2. 2mo ago Changed · -40 lines · -61 tokens per session d430092319b0
  3. 2mo ago First seen · 146 lines · 120 tokens per session scan A e31832c819b2

Subscribe to this mod's changes

design-rustycore-architecture is a skill published in the GitHub repository alseif0x/rustycore (33 stars, last pushed 5d ago), licensed GPL-3.0. It adds 59 tokens to every session and 1,373 once invoked, about $0.0002 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.

PlanningRustgame-servermariadbmmorpgopen-sourcetokio
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