Python Schema Guard for Deterministic AI Output RepairPython Schema Guard for Deterministic AI Output Repair
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Schema Guard: deterministic repair for structured AI output
Independent Python project for validating almost-JSON output before downstream software uses it. The repair ladder handles Markdown fences, trailing commas, Python literals, quoting errors, and related formatting failures, then validates against a schema and records repairs and coercions. On the included synthetic fixtures, parse recovery rises from about 8% to 96%; this is a fixture benchmark, not a claim about every model or real customer workload. Truncation remains a documented limitation. The project includes 38 tests and reproducible results.
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