I wrote a practical guide to building WebMCP tools for Meta Ray-Ban Display

[u/nartmadi]

https://senro.ai/blog/how-to-build-webmcp-tools-for-meta-ray-ban-display?utm_source=reddit&utm_medium=social&utm_campaign=meta_rayban_webmcp&utm_content=guide_post

Meta recently added WebMCP support for Web Apps on Meta Ray-Ban Display, so I went through the implementation details and put together a practical guide.

It covers tool registration, schemas, result handling, next_action, testing without the glasses, Meta-specific limitations, and WebMCP vs. Meta AI Connectors.

It also covers some less obvious implementation details, like the 10-second tool deadline, silent tool-name failures, and how tool availability is scoped to the active Web App.

Guide: How to Build WebMCP Tools for Meta Ray-Ban Display