elix-scroll-3d: Instructions file for Codex

AGENTS.md

elix-scroll-3d AGENTS.md is an instructions file for Codex, OpenCode from ElixIsmael/elix-scroll-3d. It costs 472 tokens per session, scanned A, original, MIT.

Project instructions for building scroll-driven 3D web pages with WebGL, Three.js, and GLTF models. They also cover keeping 3D scenes usable on mobile.

In plain words
What is it for?
Use them when creating or changing a website with scroll-based 3D scenes, WebGL graphics, Three.js, or GLTF files.
Why use it?
They help an agent decide whether 3D is needed and avoid rework from heavy models, poor performance, or unfocused animations.

Instructions file for CodexOpenCode

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

This is ElixIsmael/elix-scroll-3d's own configuration. It tells Codex and OpenCode how to work on elix-scroll-3d 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 elix-scroll-3d configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ElixIsmael/elix-scroll-3d. 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/ElixIsmael/elix-scroll-3d/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ElixIsmael/elix-scroll-3d

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 elix-scroll-3d AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/elixismael/elix-scroll-3d/agents-md.svg)](https://agentmods.dev/instructions/elixismael/elix-scroll-3d/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/elixismael/elix-scroll-3d/agents-md"><img src="https://agentmods.dev/badge/instructions/elixismael/elix-scroll-3d/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 472 This file is loaded in full into every session.
When invoked 472 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00472 $0.00472
Opus 5 $0.00236 $0.00236
Sonnet 5 $0.00094 $0.00094
Haiku 4.5 $0.00047 $0.00047

Measured 6d ago against content hash 74b8238abdae, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

elix-scroll-3d 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 6d 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 · 39 lines

What it actually says

elix-scroll-3d

For agents that read AGENTS.md (Cursor, Codex, Copilot, Gemini CLI and others). Claude Code users do not need this file: run ./install.sh and the skill loads on its own.

How to use

When the work involves a scroll-driven 3D scene, WebGL, Three.js, GLTF models, scrollytelling, or a 3D page that is slow on mobile, follow skills/elix-scroll-3d/SKILL.md.

Do not start with technique. The skill's first two steps are decisions:

  1. Does 3D earn its place? If the only benefit is that it looks impressive, recommend an optimized video or image and explain the trade.
  2. What is the mechanic proving? A scroll mechanic that only decorates is dead weight. It must demonstrate the client's service, and its climax must coincide with the call to action.

The rules that save the most rework

Rule Why
Prefer procedural when the result is equivalent Removes weight, licensing, and rework in one decision
Audit a model before downloading it Named hierarchy, density, scale, pivot, and license. A merged mesh cannot be fixed in code.
Set the performance budget before writing code And cut visual scope when it breaks, rather than accepting the overrun
The 3D canvas is never the LCP Poster image first, scene takes over afterwards
All text lives in HTML above the canvas Never rendered into a texture. Indexing, sharpness, screen readers.
Sample camera curves by arc length getPointAt, not getPoint, or the camera accelerates on its own through curves
Cap the pixel ratio on mobile The most common single cause of frame rate collapse
prefers-reduced-motion gets a static equivalent Not a slower animation

Detail lives in skills/elix-scroll-3d/references/. Before delivery, run references/checklist.md item by item, reporting each failure with the line and snippet that causes it.

Never invent a benchmark. If it was not measured, label it an estimate.

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. 6d ago First seen · 39 lines · 472 tokens per session scan A 74b8238abdae

Subscribe to this mod's changes

elix-scroll-3d AGENTS.md is an instructions file published in the GitHub repository ElixIsmael/elix-scroll-3d (9 stars, last pushed 10d ago), licensed MIT. It adds 472 tokens to every session, about $0.0024 per session on Opus 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.

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