What is rustycore AGENTS.md?

Project instructions for rustycore covering the source of truth, reference priorities, the current checkpoint, and how to begin work on an issue.

Use them when planning or implementing an issue in the rustycore repository.

They help an agent understand which project information to trust and how to start a task correctly.

How alseif0x/rustycore configures Codex and OpenCode

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.md

Clone the repo

git clone --depth 1 https://github.com/alseif0x/rustycore

Made for: Codex, OpenCode.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/alseif0x/rustycore/agents-md/github.svg)](https://agentmods.dev/instructions/alseif0x/rustycore/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/alseif0x/rustycore/agents-md"><img src="https://agentmods.dev/badge/instructions/alseif0x/rustycore/agents-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/alseif0x/rustycore/agents-md"><img src="https://agentmods.dev/badge/instructions/alseif0x/rustycore/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 5,716 This file is loaded in full into every session.

When invoked 5,716 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.05716	$0.05716
Opus 5.5	$0.02286	$0.02286
Sonnet 5.5	$0.01143	$0.01143
Haiku 4.5	$0.00572	$0.00572

Measured 5d ago against content hash 4e5b02437cd9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rustycore AGENTS.md 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 5d 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.md · 405 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

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.

5d ago Changed · +87 lines · +1,453 tokens per session 4e5b02437cd9
18d ago Changed · -54 lines · -895 tokens per session 0614cb470660
1mo ago Changed · +9 lines · +128 tokens per session c0602db12535
1mo ago Changed · +11 lines · +195 tokens per session c6d1bb57885d
1mo ago Changed · +1 lines · +32 tokens per session 694dea2d17cc
1mo ago Changed · +17 lines · +254 tokens per session 4e888b4c8819
1mo ago Changed · +35 lines · +569 tokens per session 64eb27071d68
1mo ago Changed · +41 lines · +607 tokens per session ac6115253b67
1mo ago Changed · +1 lines · +6 tokens per session f4054bf04980
1mo ago First seen · 257 lines · 3,367 tokens per session scan A 159c6b2d7d08

Subscribe to this mod's changes

rustycore AGENTS.md is an instructions file published in the GitHub repository alseif0x/rustycore (33 stars, last pushed 5d ago), licensed GPL-3.0. It adds 5,716 tokens to every session, about $0.0229 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.

Rust game-server mariadb mmorpg open-source tokio

rustycore AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
rustycore AGENTS.mdalseif0x/rustycore	Instructions file	33	5d ago	GPL-3.0	A	5,716	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

rustycore: Instructions file for Codex