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Why Your .NET MCP Tool Classes Crash at Runtime (And the Two-Line Fix)

This story is from 2026-09-13. It is preserved in the archive; the latest stories are on the live feed.

If you're building MCP servers in .NET with instance-based tool classes — the kind that take ILogger , HttpClient , or a repository through constructor injection — there's a good chance you've already hit this at runtime: System.Reflection.TargetException: Non-static method requires a target. No wa…

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  1. 2026-09-13 19:28 · DEV Community — AI
    Why Your .NET MCP Tool Classes Crash at Runtime (And the Two-Line Fix)

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