Expired50% confidenceEventExact time
In Google's demo, by making the WebMCP tool name attribute missing, the audit returned the error message 'WebMCP schemas are invalid. Form level tool name attribute is missing.'
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/21/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/19/2026(expired)
Sources
Related Claims
UnverifiedWhen porting browser-side JS code to a Node.js environment, browser APIs such as DOM operation interfaces, BOM interfaces, and Canvas 2D/WebGL do not exist, causing the code to throw a ReferenceError.57% similarUnverifiedThe input schema of WebMCP's imperative API defines parameters in JSON Schema format.57% similarVerifiedWebMCP provides two implementation approaches—a declarative API and an imperative API—where the declarative API is implemented by adding tool-name and tool-description attributes to HTML form elements.56% similarUnverifiedNode.js is based on the V8 engine but lacks the browser's Web API layer, natively missing all BOM/DOM objects.56% similar
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