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fix(server): prioritize zod issues and format them (#1503)

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Co-authored-by: mozmo15 <mozmo@mail.com>
Co-authored-by: Felix Weinberger <fweinberger@anthropic.com>
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Mo 2026-03-31 14:20:35 +02:00 • committed by GitHub
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'@modelcontextprotocol/sdk': patch
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Prioritize `error.issues[].message` over `error.message` in `getParseErrorMessage` so custom Zod error messages surface correctly. In Zod v4, `error.message` is a JSON blob of all issues, not a readable string.