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Introduction

The Metaverse Metadata Directory (MVMD) is an integration framework that connects existing metadata standards to create interoperable, rich descriptions of digital assets for the metaverse.

What is MVMD?​

MVMD is a bridge between standards, not a new competing standard. It provides a cohesive way to implement multiple standards together while maintaining compatibility and discoverability across platforms.

Why MVMD Is Needed​

Today's metaverse assets often require capabilities from multiple standards:

  • A virtual character might need glTF for the model, VRM for avatar functionality, and C2PA for authentication
  • A virtual environment might combine USD for scene composition with CityJSON for urban features
  • Both need Schema.org compatibility for basic discoverability

Without a unified approach, developers face namespace conflicts, inconsistent implementation patterns, and complex validation requirements.

What MVMD Provides​

  • Core Concepts: Fundamental patterns for metadata organization
  • Namespaces: Clear guidance on integrating different standards
  • Implementation Patterns: Practical implementation steps
  • Integration Profiles: Ready-to-use templates for common asset types
  • Validation Tools: Utilities to ensure proper implementation

Core Approach​

MVMD uses Schema.org and JSON-LD as its foundation because:

  • It's widely adopted and understood
  • It provides a flexible structure
  • It supports namespacing and extensions
  • It's compatible with search engines and discovery tools

Getting Started Based on Your Role​

For Content Creators​

  1. Start with Core Concepts to understand the basics
  2. Use Integration Profiles for your first implementation
  3. Validate your metadata using our tools

For Developers​

  1. Begin with Core Concepts for fundamentals
  2. Explore [Namespaces]../standards/overview.md) for standard integration
  3. Study Implementation Patterns for practical guidance
  4. Reference Integration Profiles for standard templates

For Platform Owners​

  1. Review Implementation guidance
  2. Implement Best Practices
  3. Adopt Integration Profiles for your platform

For Standards Organizations​

  1. Read For Standards Organizations for specific guidance
  2. Explore how your standard can be integrated in the [Namespaces]../standards/overview.md) section

Documentation Structure​

Our documentation is organized to help you find information quickly:

Next Steps​

Choose the path that matches your needs:

  1. Understanding the Basics: Start with Core Concepts
  2. Implementing Quickly: Jump to Integration Profiles
  3. Integrating Standards: Explore [Namespaces]../standards/overview.md)
  4. Validating Metadata: Use our Validator