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BoundaryML/baml: Schema Engineering Framework for Prompt Engineering Reaches 7.9K Stars With 7-Language Support
BAML turns prompt engineering into schema engineering — defining structured output models that generate type-safe code across Python, TypeScript, Ruby, Java, C#, Rust, and Go. Its SAP (schema-aligned parsing) algorithm handles flexible LLM outputs like markdown within JSON or chain-of-thought reasoning. Trending on GitHub's Rust page at 7,886 stars with VSCode integration and a parallel testing playground for fast iteration.
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