Yoast has introduced a Schema Aggregation "schemamap" feature in Yoast SEO 27.1 for WordPress, centralizing a site's structured data into a single endpoint that external agents and AI systems can query directly. The feature is designed to support initiatives such as Microsoft's NLWeb, which connect websites with AI through standardized interfaces.
Yoast SEO introduces Schema Aggregation schemamap feature
The new Schema Aggregation capability collects a website's schema.org structured data into a single JSON endpoint called a schemamap. Previously, Yoast SEO output structured data separately on each page, which required repeated crawling by external systems to reconstruct the full schema graph.
The schemamap connects entities such as articles, authors, products, and organizations into one graph while removing duplicates. Its output includes structured descriptions of these entities with links preserved between related items. External agents can request the site's complete schema graph from a single URL, rather than crawling every individual page.
Technical details and NLWeb collaboration
The feature is optional and disabled by default in Yoast SEO 27.1. When enabled, the endpoint aggregates all indexable content while filtering out navigation elements and merging duplicate entities, according to Yoast and principal SEO Alex Moss, who explained the feature on X.
Moss stated that the schemamap endpoint has several defined characteristics:
- Cacheable responses, typically below 100 milliseconds when served from cache.
- Respect for existing site privacy and indexing settings configured in WordPress and Yoast SEO.
- Inclusion of all indexable content while excluding navigation elements and other noise.
- Merging of multiple instances of the same entity, such as a recurring author or article, into a single node.
- Compatibility with paid Yoast extensions, including Yoast WooCommerce SEO, which add additional schema types.
- Automatic inclusion of schema from plugins that extend Yoast's Schema API, such as events or recipe integrations.
The collaboration ties this endpoint to Microsoft's NLWeb project, an open initiative for natural language interfaces to websites. NLWeb's GitHub repository describes it as a collection of open protocols and tools that use formats like schema.org and RSS. NLWeb supports the Model Context Protocol and aims to help both human users and AI agents access site information more efficiently.
Availability, visualization tool, and sources
The Schema Aggregation feature appears in the Yoast SEO 27.1 interface once the plugin is updated on a WordPress site. Yoast presents a guided walkthrough that explains the schemamap capability and includes a toggle to activate the endpoint.
Separately, Yoast is rolling out a Schema.org structured data visualization tool that shows how schema is deployed across a site. Search Engine Journal reports that Yoast has shared a demonstration video of this visualizer.
Official sources:
- Alex Moss on X describing the Schema Aggregation schemamap endpoint
- NLWeb official GitHub repository detailing the NLWeb protocols and tools
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