End-to-End JSON Extraction Pipeline: A Working Code Example
~15 min read
Putting schema-in-prompt, few-shot examples, native JSON mode, lenient parsing, schema validation, and retry-with-error together into one complete, reusable extraction function.
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Key points
- •A production pipeline stacks 5 stages: schema-in-prompt, native JSON mode, lenient extraction, schema validation, retry-with-error
- •Each stage targets a specific failure mode covered in the earlier subtopics — none of them alone is sufficient
- •Wrapping this into one reusable function means every call site gets the full reliability stack automatically
- •Using a generic, schema-parameterized function (Type[T]) lets the same pipeline serve many different extraction schemas
- •This is exactly the 'reusable template' idea from JSON prompting's core value proposition — build once, plug in everywhere