oxrsys: Instructions file for Codex

AGENTS.md

oxrsys AGENTS.md is an instructions file for Codex, OpenCode from demonixis/oxrsys. It costs 3,921 tokens per session, scanned A, original, MPL-2.0.

A repository guide for OXRSys, an OpenXR runtime and its viewer and launcher apps. OpenXR is a standard that lets virtual- and augmented-reality software work with different headsets and operating systems.

In plain words
What is it for?
It helps agents work on the runtime, graphics and input systems, macOS, iOS, visionOS, Android, Linux, and related viewer and launcher applications.
Why use it?
It gives coding agents the project’s rules, current technical state, documentation requirements, and platform constraints so their changes fit the codebase.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Codex.

This is demonixis/oxrsys's own configuration. It tells Codex and OpenCode how to work on oxrsys 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 oxrsys configures →

Reuse

Borrowing it

Nothing to install: this file belongs to demonixis/oxrsys. 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/demonixis/oxrsys/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/demonixis/oxrsys

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.

agentmods badge for oxrsys AGENTS.md

README.md
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Your own site
<a href="https://agentmods.dev/instructions/demonixis/oxrsys/agents-md"><img src="https://agentmods.dev/badge/instructions/demonixis/oxrsys/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.

agentmods 80×15 button for oxrsys AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/demonixis/oxrsys/agents-md"><img src="https://agentmods.dev/badge/instructions/demonixis/oxrsys/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,921 This file is loaded in full into every session.
When invoked 3,921 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 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 $0.03921 $0.03921
Opus 5.5 $0.01568 $0.01568
Sonnet 5.5 $0.00784 $0.00784
Haiku 4.5 $0.00392 $0.00392

Measured 4d ago against content hash b4b7bbff76b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

oxrsys 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 4d 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 · 298 lines

How it starts

The opening of the file, as written. The whole thing — 298 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OXRSys Runtime

OXRSys is an open-source OpenXR runtime for macOS. The host runtime supports both Apple Silicon (arm64) and Intel (x86_64), exposes Metal and Vulkan/MoltenVK graphics paths, and streams through Apple VideoToolbox. Headset clients cover Quest 1/2/3/Pro, Pico, and Vision Pro. The shared simulator runs on macOS and iOS; its iOS mode supports Cardboard-style stereo display and ARKit tracking.

The desktop user interface is the native SwiftUI OXRSys Home app. AppKit may be used only in small, platform-scoped adapters for capabilities SwiftUI does not expose directly, such as NSOpenPanel, NSWorkspace, cursor/input handling, and MTKView integration.

As of November 3, 2026, the pinned non-interactive OpenXR-CTS baseline is green locally: 64 passed, 35 skipped, and 0 failed.

Repository Rules

  • Always build and verify before declaring success. Report source/build, package, launch, live streaming, visual, and physical-device results as separate gates.
  • Keep this file and all project-owned source and documentation in English.
  • Do not generate documentation unless explicitly requested. Keep any requested documentation changes focused on the affected workflow.
  • Keep work within the requested scope. A bug fix must not include unrelated fixes; use separate, focused commits and pull requests so each change is easy to review.
  • Do not implement anticipated needs unless explicitly requested.
  • Keep completion reports short and simple unless a detailed explanation is requested.
  • Product versions come only from config/OXRSysVersion.xcconfig.
  • Project-owned source uses MPL-2.0. Preserve SPDX headers and upstream third-party licenses.
  • Do not add dependencies without a clear need. C++ dependencies use CMake FetchContent; platform SDKs and Vulkan headers are toolchain dependencies.
  • Keep commits focused. Commit messages must read naturally and must not mention Codex or contain [codex].
  • Claude, Codex, and all other AI agents must never commit or push under an agent, model, or provider identity. Commits must use the actual human contributor's name and email for both author and committer; preserve the original human authorship when applying others' commits. Do not add AI author or co-author trailers, signatures, or generated-by attribution.
  • Before committing, verify that the configured Git identity belongs to the human contributor. Push only through that contributor's authorized account and credentials, never an AI or bot account. Do not invent an identity or change authentication to bypass this rule; if the human identity or authorized account is unavailable, leave the changes local and ask the contributor.

Read the full file on GitHub · 298 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. 4d ago Changed b4b7bbff76b1
  2. 5d ago Changed · +1 lines · +28 tokens per session 8c6728e7f2f6
  3. 6d ago Changed · +4 lines · +88 tokens per session b769a7247c95
  4. 7d ago Changed · +3 lines · +64 tokens per session 0405cfe75b3e
  5. 10d ago Changed · +25 lines · +379 tokens per session b151ed4b4e80
  6. 16d ago Changed · +6 lines · +99 tokens per session 0fb64833956e
  7. 27d ago Changed · +2 lines · +44 tokens per session 2bd333fedacc
  8. 1mo ago Changed · +42 lines · -361 tokens per session c7006ddd3741
  9. 2mo ago First seen · 215 lines · 3,580 tokens per session scan A 75c2ec03b8e3

Subscribe to this mod's changes

oxrsys AGENTS.md is an instructions file published in the GitHub repository demonixis/oxrsys (118 stars, last pushed 3d ago), licensed MPL-2.0. It adds 3,921 tokens to every session, about $0.0157 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.

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