During February 2026, Michael Stoiber enhanced the modelcontextprotocol/ext-apps repository by introducing greater flexibility to the Host-to-Sandbox communication protocol. He modified the protocol specification from a strict “MUST” to a more adaptable “SHOULD,” allowing components to handle messages with improved interoperability and reduced integration friction. This change was carefully implemented and documented using Markdown, with a focus on protocol design and clear technical communication. The update preserved backward compatibility and aligned with the intended specifications, minimizing downstream impact. Michael’s work demonstrated thoughtful engineering depth, addressing both immediate integration needs and long-term maintainability within the project’s documentation and protocol layers.