Unverified50% confidenceSolutionExact time
The Go standard decoder by default consumes only the first complete JSON value without reporting an error; a second decode pass is needed to catch trailing JSON values, and if any value can be decoded from the remaining bytes, it is treated as a format violation.
1
Sources
50%
Confidence
Long-term
Relevance
10/11/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe Go standard library encoding/json's DisallowUnknownFields() is a strict-mode option that causes decoding to return an error rather than silently ignoring fields when the JSON input contains fields not defined in the target struct.76% similarUnverifiedJSON Mode only guarantees that the output is valid JSON without constraining the field structure; Structured Outputs enforces output conforming to a predefined JSON Schema at the syntactic level by applying a finite state machine (FSM) to constrain the token sampling path during the decoding phase.74% similarUnverifiedWhen the string content sent by the model is unambiguous, valid JSON, parsing it directly carries no risk and is a low-cost fix for the schema validation degradation problem.72% similarUnverifiedConstrained decoding restricts the model, via a predefined JSON Schema, so that each generated token can only be selected from the set of valid tokens.71% similarUnverifiedAn unambiguous, valid JSON string sent by a model should be parsed directly rather than rejected, which is consistent with Postel's Law (be strict in what you send, be liberal in what you accept).70% similar
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