Bump ModelContextProtocol to 1.2.0#896
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Moves Dashboard and Lite from the 0.7.0-preview.1 SDK to the stable 1.2.0 release. The C# SDK landed 1.0 between these two points and the codebase happens to use only the stable subset of the surface (attributes, AddMcpServer/WithHttpTransport/WithTools<T>/MapMcp, DI-bound tool methods) — none of the breaking changes (filter API rename, RequestContext ctor, RunSessionHandler, binary-content types, McpServerHandlers, legacy SSE) touch this repo. 154 [McpServerTool] sites and 39 [McpServerToolType] sites compile unchanged. Zero source code changes — packaging only. Verified: - Dashboard and Lite build clean (0 errors) - Lite launches; the in-process MCP server starts on :5151 - A POST initialize against the new Streamable HTTP transport returns the full server capabilities and tool descriptions Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Moves
ModelContextProtocolandModelContextProtocol.AspNetCorein Dashboard and Lite from 0.7.0-preview.1 → 1.2.0 — getting off the preview tag and onto a stable 1.x.The C# SDK landed 1.0 between these two points, but our codebase happens to use only the stable subset of the surface that survived 1.0 stabilization unchanged:
[McpServerTool]/[McpServerToolType]attributes — every site already specifiesName = "..."AddMcpServer(...)→.WithHttpTransport().WithTools<T>()chains_app.MapMcp()None of the actually-breaking APIs across 0.7→1.2 are referenced anywhere in this repo: filter API rename (
Add*Filter→WithMessageFilters/WithRequestFilters),RequestContextctor signature,RunSessionHandler,ImageContentBlock.Data/AudioContentBlock.Data/FromImage/FromAudio,McpServerHandlers, legacy SSE endpoints. 154[McpServerTool]sites + 39[McpServerToolType]sites compile unchanged. Zero source code changes — packaging only.Behavioral changes worth knowing
Protocol-Versionheaders)./sseand/messageendpoints are off by default. Server-side is fine since we already useWithHttpTransport()— but any consumer pinned to the old SSE endpoints needs to switch to Streamable HTTP.Test plan
POST /initializeagainst the new Streamable HTTP transport returns the full server capabilities and tool list (verified via curl,serverInfo.version = "1.2.0")list_servers,get_collection_health) end-to-end🤖 Generated with Claude Code