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[Server] Fix outputSchema validation rejecting conforming structuredContent - #539
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chr-hertel merged 4 commits intoOct 7, 2026
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October 6, 2026 22:51
chr-hertel
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A self-built JsonSerializable structuredContent and a nested empty object in a returned DTO conform as sent, but fail outputSchema validation.
Decoding an object result into arrays turned every nested {} into [], which
was sent as a JSON array and now fails outputSchema validation.
A self-built JsonSerializable value was validated by its properties, not by what it serializes to.
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Follow-up to #515 - two cases were rejected although they conform on the wire:
CallToolResultwith aJsonSerializablevalue was validated by its properties instead of its serialization[], so it was sent as an array and failed validation