Migrate outbound MCP client to SDK v2 (spec 2026-07-28) - #1591
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Migrate outbound MCP client to SDK v2 (spec 2026-07-28)#1591RhysSullivan wants to merge 1 commit into
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Moves
packages/plugins/mcp/src/sdk/from@modelcontextprotocol/sdkv1 to@modelcontextprotocol/client/core2.0.0, so outbound connections can speak MCP 2026-07-28 while keeping full legacy interop.versionNegotiation: auto); forced-SSE and stdio keep the SDK legacy default (SSE is legacy-only; stdio spawns per call).server/discoverfallback for 2026-07-28-only servers; a transport failure on the fallback keeps the primary probe verdict.SdkHttpError.status,SseError.code,InsufficientScopeError) instead of matching SDK-internal message strings; remaining message matches re-verified against the installed v2 source.src/testing/(the public v1 test server) intentionally stays on SDK v1 until the server-side migration; v1 and v2 coexist under different package names.Stacked on #1590.