# Schema Stats

> Monthly statistics on how Schema.org structured data is used across the public web, based on Google's open dataset, plus a free Schema.org validator and a public MCP server for AI agents.

Schema Stats tracks every Schema.org type and property and how many domains use it, month by month. Adoption is expressed as domain-count buckets (from "< 1K" to "10M+"), because that is how the source dataset is published: exact per-term domain counts do not exist upstream. The archive currently spans 3 month(s), most recently 2026-07. Every page exists in English, Italian and Spanish (en, it, es); the English URLs below are the canonical ones.

## Main pages

- [Home](https://www.schemastats.com/en/): headline figures for the latest month and the terms that moved.
- [Explore](https://www.schemastats.com/en/explore/): searchable index of every Schema.org type and property with its adoption bucket.
- [Trends](https://www.schemastats.com/en/trends/): terms that gained or lost domains between consecutive months.
- [Monthly reports](https://www.schemastats.com/en/report/): a written report per month, with bucket distribution and tier migration.
- [Validator](https://www.schemastats.com/en/validate/): extracts JSON-LD, Microdata and RDFa from any URL and shows how common each term is.
- [Compare](https://www.schemastats.com/en/validate/compare/): diffs the structured data of two URLs.
- [About](https://www.schemastats.com/en/about/): methodology, data source and how the buckets are defined.

## Schema.org term pages

Each of the 6058 types and properties has its own page with the official Schema.org definition, the type hierarchy, expected value types and a month-by-month adoption history. The URL pattern is https://www.schemastats.com/en/terms/<TermName>/ and term names are case-sensitive, e.g. https://www.schemastats.com/en/terms/Product/ and https://www.schemastats.com/en/terms/aggregateRating/.

## For AI agents

- [WebMCP](https://www.schemastats.com/en/webmcp/): what this site exposes to agents, which tools exist and how to call them.
- [MCP endpoint](https://www.schemastats.com/mcp): stateless MCP server over Streamable HTTP. POST JSON-RPC 2.0 messages; no authentication; read-only; 60 requests per minute per IP. Tools: search_schema_terms, get_schema_term, get_adoption_overview, get_adoption_trends.
- [SchemaStatsBot](https://www.schemastats.com/en/bot/): documentation for the crawler used by the validator, including how to block it in robots.txt.

## Sitemaps

- [sitemap.xml](https://www.schemastats.com/sitemap.xml): canonical URLs with hreflang alternates for the three languages.
- [sitemap.txt](https://www.schemastats.com/sitemap.txt): the same pages in all three languages, one absolute URL per line.

## Source

The underlying usage statistics are published monthly by Google in the schemaorg/schemaorg repository (https://github.com/schemaorg/schemaorg/tree/main/data/public_stats/google). Term definitions come from the official Schema.org vocabulary. See the About page above for the full methodology.