What does debugging MCP server failures in production actually look like?

[Sasisundar2211]

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Trying to understand real failure patterns before building tooling.Specific question: has an MCP server ever returned null, a broken schema, or timed out in a way that propagated to a real user before you caught it? What was the first signal you got? What did the debugging workflow look like?
Not pitching anything trying to collect 5-10 data points from people actually operating these in production. Any detail helps.