Extension Version: 2026-07-28

This directory contains the schemas and specifications for the 2026-07-28 version of the experimental MCP Toolbox extension.

Extension Identifier

The identifier we are using for this extension version is com.google.cloud/toolbox.v1.

Currently Supported Extensions:

• Secure Parameters: The secure parameter feature is strictly tied to the latest v20260728 MCP protocol and the com.google.cloud/toolbox.v1 experimental extension.