modelcontextprotocol/rust-sdk rmcp-v3.1.0

on GitHub

Added

• classify authorization-required errors (#1056)
• add strict stateless protocol metadata validation (#1091)
• SEP-2260 stream-based enforcement of client receive-side request association (#1055)

Fixed

• (model) decode metadata-bearing input-required results affecting mrtr (#1097)
• require metadata for modern HTTP requests (#1089)
• honor supported_protocol_versions when negotiating initialize (#1093)

Other

• document the ping utility with examples (#1106)
• complete Tier 1 feature docs and finalize roadmap (#1101)
• (conformance) meeting requirements for tier 1 (#1087)