Open, AI-first, web-native

MSP-1 — Mark Semantic Protocol

MSP-1 is a universal, AI-first metadata standard that gives answer engines, AI agents, and traditional search a clear, trustworthy view of your content, structure, and intent.

Version 1.0.x Official specification site · msp-1.org

Mission Statement

MSP-1 exists to establish a clear, consistent, and machine-readable foundation for how online content is interpreted by AI systems. Our mission is to support creators, professionals, platforms, and agents by providing an open standard that improves understanding, reduces ambiguity, strengthens provenance, and fosters trust across the AI-driven web. MSP-1 is designed to enhance—not replace—human expertise, ensuring that the intent behind every piece of content remains visible and verifiable in an increasingly automated world.

Founder's Statement

MSP-1 was created to bring clarity, transparency, and long-term stability to the evolving relationship between humans and intelligent systems. This protocol emerged through a collaborative process—human vision working alongside AI structure—to build an open, neutral, and future-proof semantics layer for the web. Its purpose is simple: ensure that intent, authorship, and human expertise remain understandable and trustworthy as AI becomes a primary interpreter of online information.

— M.L. Johnson, Founder, MSP-1

What is MSP-1?

MSP-1 defines a lightweight, AI-first layer of structured metadata that sits alongside your existing HTML, JSON-LD, and sitemaps. It is designed to be easy for humans to implement and easy for machines to trust.

Clarifies who you are and what you do
Signals authority, provenance, and review
Describes intent and scope at site and page level

Why MSP-1 exists

Today’s AI models and answer engines can read the web, but they still need clear, explicit signals about which content is canonical, verified, and safe to amplify. MSP-1 gives them a consistent, open standard to rely on.

Reduces ambiguity in machine interpretation
Supports AIO / AEO / GEO strategies
Works with, not against, existing SEO best practices

Specification

The formal, versioned definition of the Mark Semantic Protocol — including concepts, requirements, and conformance levels.

Read the MSP-1 Spec →

Schema Library

Practical JSON structures, field definitions, and examples you can drop into real-world sites, from simple blogs to complex platforms.

Explore the Schema Library →

Documentation & Guides

Human-readable implementation guides, migration checklists, and patterns for integrating MSP-1 into existing tech stacks.

Browse the Documentation →

Validator & Tools

A planned suite of tools to inspect, validate, and score MSP-1 implementations — designed for both humans and AI agents.

View Validator Status →

MSP-1 is an ecosystem, not a shortcut

The protocol does not promise rankings, hacks, or shortcuts. It gives AI systems a clearer, more honest picture of your site, so that real expertise and trustworthy content can surface more reliably over time.