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xr-live-plugin-dev SKILL.md skillA

xr-live-plugin-dev from google/three-live is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add google/three-live/xr-live-plugin-dev@git:20261106.31b699f

Pins git:20261106.31b699f in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: google/three-live
Path: skills/xr-live-plugin-dev/SKILL.md
Versions recorded: 5
Latest version: git:20261106.31b699f, committed Nov 6, 2026
First version recorded: Nov 5, 2026
Size: 5,734 bytes
Repository stars: 137
License: Apache-2.0

Adds or modifies <three-live> and <xr-live> plugins, userData.xr spatial traits, glTF ANDROID_xr_scenecore extensions, USDZ customData.xr metadata, and native Android (Filament / SceneCore) or iOS/visionOS (RealityKit) runtime features. Use when contributing new capabilities to the three-live monorepo or keeping Web, Rust, Android, and iOS/visionOS runtimes in parity.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Developing Cross-Platform `<three-live>` & `<xr-live>` Plugins

Every `<xr-live>` feature is authored once and executes across **Web (`WebGL2` / `WebXR`)**, **Android (`Filament` / Jetpack XR `SceneCore`)**, and **iOS & visionOS (`RealityKit`)**. Follow this 5-step workflow whenever adding or modifying a plugin or `userData.xr` trait so the platforms never drift.

---

## Step 1: Canonical Trait Schema (`three-live/src/xr-trait-schema.ts`)

`three-live/src/xr-trait-schema.ts` is the single source of truth for trait validation, clamping, and export serialization:

1. **Define the normalized TypeScript interface** and a pure parser `parse<Feature>(raw: unknown)` using `clampNum(v, lo, hi, fallback)`, `isFiniteVec3(v)`, `shortString(v, max)`, and `safeMediaUrl(v)`.
2. **Add the field to `NormalizedXRTraits` and `normalizeXRTraits(raw)`** so both web plugins and exporters see identical defaults and bounds.
3. **Export to glTF (`buildXRSceneCoreExtension`)**: Map the normalized field into `nodes[i].extensions.ANDROID_xr_scenecore`.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add google/three-live/xr-live-plugin-dev@sha256:f3a72d870b905c8e

The line at the top of this page pins the label git:20261106.31b699f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_yxhkxgeau7kqy7kx.svg)](https://markdownregistry.com/a/art_yxhkxgeau7kqy7kx)

0 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Nov 5, 2026 and Nov 6, 2026, more than one a day.

version	committed	commit	size	audit
git:20261106.31b699f latest	2026-11-06	31b699f	5,734 B	A	view · diff
git:20261106.f814b45	2026-11-06	f814b45	5,734 B	A	view · diff
git:20261106.0c490f9	2026-11-06	0c490f9	5,733 B	A	view · diff
git:20261106.a7c2b12	2026-11-06	a7c2b12	5,733 B	A	view · diff
git:20261105.e009f68	2026-11-05	e009f68	5,733 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (5734 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

google/three-live · 137 stars · license Apache-2.0 · pushed 2026-11-07 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_yxhkxgeau7kqy7kx
GET https://markdownregistry.com/api/v1/resolve?ref=google/three-live/xr-live-plugin-dev
GET https://markdownregistry.com/api/v1/blob/f3a72d870b905c8edc684cc0c9e196deda16481509fc74118e2c8c2b81e10135

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.