MCP Apps for Material 3 Expressive: a Material host frame that embeds MCP Apps in agent surfaces, and an app provider that lets an MCP App built with the design system follow the host's theme, display mode and safe areas.
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"language-lit-material3-expressive-mcp-apps","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
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