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webxr-anchors

Create, manage and persist WebXR anchors via hit-testing for cross-session AR content placement.

1|1|Updated Mar 30, 2026
Search Tags:#persistence#anchors#three.js#webxr#hit-testing#ratk
One-click install
npx skills add https://github.com/Entelligentsia/skillforge --skill webxr-anchors
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: webxr-anchors
Source: https://github.com/Entelligentsia/skillforge/tree/main/meta-webxr-skills/skills/webxr-anchors
Command: npx skills add https://github.com/Entelligentsia/skillforge --skill webxr-anchors

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

WebXR spatial anchors enable developers to reliably attach virtual content to real-world surfaces and persist object positions across sessions on Meta Quest, simplifying AR experiences.

Core Features & Use Cases

  • Anchor creation: create anchors at hit-test results or from poses.
  • Persistence: save and restore anchors across sessions and rooms.
  • Hit-testing integration: perform hit-tests to determine anchor placement and surface interaction.

Quick Start

Place an anchor at a hit-test result and attach your content to it to persist it across sessions.

Frequently Asked Questions about webxr-anchors

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I persist WebXR anchors across sessions on Meta Quest?▼

To persist WebXR anchors across sessions, you save and restore persistence handles to reliably attach content to real-world surfaces. This allows AR experiences to maintain object positions across rooms and sessions on Meta Quest.

How do I use hit-testing to place an anchor in Three.js?▼

You perform hit-testing to determine surface interaction points, then create an anchor at the hit-test result. Attaching your Three.js content to this anchor grounds it physically in the AR space.

What is the WebXR anchor lifecycle API used for?▼

The WebXR anchor lifecycle API is used to create, manage, and persist XR anchors within WebXR sessions. It enables developers to reliably attach virtual content to real-world surfaces and maintain object positions over time.

Does WebXR anchor persistence work with RATK integrations?▼

Yes, WebXR anchor persistence works with RATK integrations. The implementation covers anchor lifecycle APIs, hit-test workflows, and persistence handles specifically within Three.js and RATK integrations for practical AR deployment.

Why are my WebXR anchors drifting from their real-world surfaces?▼

WebXR anchors may drift if they are created from raw poses instead of hit-test results. Performing hit-tests determines accurate anchor placement and surface interaction, ensuring content reliably attaches to real-world surfaces.

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