What is dx12-mcp AGENTS.md?

A repository instruction file for coding agents using the dx12-mcp server. It explains that entity IDs remain stable only within one scene-generation session and that agents must check the scene-generation value.

Working with scene objects such as floors, tracking their entity IDs during one scene-generation session, and detecting when those IDs may no longer be valid.

It prevents agents from treating an object ID as permanent when that ID may change between scene generations. This avoids editing or referring to the wrong scene object.

How ryuto-alt/dx12-mcp configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to ryuto-alt/dx12-mcp. 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/ryuto-alt/dx12-mcp/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/ryuto-alt/dx12-mcp

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/ryuto-alt/dx12-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/ryuto-alt/dx12-mcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/ryuto-alt/dx12-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/ryuto-alt/dx12-mcp/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/ryuto-alt/dx12-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/ryuto-alt/dx12-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 45,803 This file is loaded in full into every session.

When invoked 45,803 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	$0.45803	$0.45803
Opus 5.5	$0.18321	$0.18321
Sonnet 5.5	$0.09161	$0.09161
Haiku 4.5	$0.04580	$0.04580

Measured 1mo ago against content hash 57c468585c0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dx12-mcp 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 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.md · 2,146 lines

The source is not reproduced here

No licence file

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.

1mo ago Changed · +171 lines · +7,742 tokens per session 57c468585c0c
1mo ago Changed · +92 lines · +2,583 tokens per session 6d2be396bb4b
1mo ago Changed · +639 lines · +13,631 tokens per session 93fb7717d669
2mo ago First seen · 1,244 lines · 21,847 tokens per session scan A f43225ef70ff

Subscribe to this mod's changes

dx12-mcp AGENTS.md is an instructions file published in the GitHub repository ryuto-alt/dx12-mcp (0 stars, last pushed 21d ago), with no licence file. It adds 45,803 tokens to every session, about $0.1832 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 2026-08-31.

Game development

dx12-mcp AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
dx12-mcp AGENTS.mdryuto-alt/dx12-mcp	Instructions file	0	21d ago	none	A	45,803	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

dx12-mcp: Instructions file for Codex