Model Context Protocol2 min read
The Official Ruby SDK for MCP Reaches 1.0
The official Ruby SDK for the Model Context Protocol has reached version 1.0 with a stable public API and a 100% conformance pass rate. The SDK now meets every Tier 2 requirement of the MCP SDK tiering system, and development toward Tier 1 continues.
By Koichi Ito (Ruby SDK Maintainer)Model Context Protocol (MCP) Blog
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Originally published by Model Context Protocol (MCP) Blog on Jul 27, 2026.
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