Use PROACTIVELY when extracting structured data from text/images, classifying content, or formatting API responses with guaranteed schema compliance. Implements Anthropic's JSON outputs mode with Pydantic/Zod SDK integration. Covers schema design, validation, testing, and production optimization. Not for tool parameter validation or agentic workflows (use strict-tool-implementer instead).
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CHANGELOG.mdREADME.mdexamples/contact-extraction.pyexamples/invoice-extraction.pyreference/schema-limitations.mdreference/use-cases.mdworkflow/phase-1-schema-design.mdworkflow/phase-2-sdk-integration.mdworkflow/phase-3-error-handling.mdworkflow/phase-4-testing.mdworkflow/phase-5-production.md