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JSON Extract API

Return structured objects whose types, nulls, and relationships match a documented contract.

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A focused use case

Deliver a product record containing variants and evidence references to an application that needs nested relationships rather than a flat table.

A practical workflow

Define the envelope and business record separately. Validate syntax, structure, semantic rules, and source support in sequence. Record schema changes explicitly and test the consumer’s handling of missing values.

An example record contract

These fields illustrate the decisions to make before implementation. Adapt the names and required values to the receiving system; the table is not a promise of a live endpoint or a provider-specific response.

Example fieldMeaning in this contract
schema_revisionContract version
record_idStable identity
recordTyped fields and relationships
issuesExplicit uncertainty

Limits worth keeping visible

Valid JSON is not proof of a correct extraction. Avoid duplicated object member names, numeric identifiers with precision risk, and undocumented date conventions.

Before increasing the workload

Run a small, authorized test set through the whole path, including the receiving application. Keep accepted, rejected, and incomplete outcomes distinguishable. A result should retain the context needed to explain its meaning after it leaves the extractor.

Continue with JSON Extract API: Validate More Than the Syntax for the full implementation discussion, and use the sample contract documentation to review the shape of a handoff.

Primary reference
IETF · RFC 8259 JSON format ↗

Consult the source documentation for implementation details and current access conditions. The workflow above is an editorial planning pattern.

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