One Predicate, Two Meanings, Three Bugs: Building a Contradiction Resolver with the Sanity App SDK

Developer Shahbaz Ali has introduced a "Contradiction Resolver" tool built using the Sanity App SDK, designed to manage conflicting information within corporate documentation. The tool functions as a state machine that tracks company knowledge, allowing users to identify contradictions, propose rulings via LLM-based agents, and finalize decisions through human oversight. The system treats decisions as first-class documents, maintaining a clear audit trail and provenance for every resolution. During development, the author encountered significant challenges related to overloaded data models and ambiguous query predicates, which led to three specific bugs. By refactoring the schema to separate concerns—such as distinguishing between winning and overruled claims—the author improved system reliability. The project highlights the importance of rigorous type-checking and the limitations of relying solely on build-time validation, ultimately demonstrating how structured content models can effectively resolve organizational knowledge conflicts.