Experimental website checks

2-UA Labs

Explore emerging web standards and signals. Choose a check to see what your site supports and where its results have limits.

Free to try. No signup required.

WebMCP checks

Experimental

Inspects experimental WebMCP markup, browser APIs, and discovery endpoints.

Useful for: Teams evaluating browser-agent integrations

Keep in mind: Conformance signals do not prove that an AI agent can complete a task.

llms.txt file checks

Experimental

Validates and generates the community-proposed llms.txt file format.

Useful for: Publishers testing emerging machine-readable files

Keep in mind: A valid file does not guarantee crawling, indexing, citations, rankings, or AI visibility.

How to use these results

Use Labs to explore new formats and investigate signals. Results may change or contain false positives; support is best effort.

These checks do not guarantee rankings, traffic, indexing, AI citations, compatibility, or security. They never create an SEO-critical result.

Looking for everyday website checks? Browse free tools for technical SEO, accessibility, and page diagnostics.