API Response Analyzer
Paste an API response and see what stands out: nulls, type disagreements, duplicate keys, oversized sections, plus a candidate schema and types.
Input
Syntax colouring is off for this document because recolouring something this large on every keystroke would slow typing down. Every tool still works normally.
Paste an API response and press Analyze.
Suspicious nulls
No null values stood out.
Inconsistent types
Every field agreed on a type.
Inconsistent arrays
Every array was internally consistent.
Duplicate keys
No duplicate keys found.
Large sections
Nothing stood out as unusually large.
JSONPath examples
No example paths to suggest.
Candidate schema
Syntax colouring is off for this document because recolouring something this large on every keystroke would slow typing down. Every tool still works normally.
TypeScript types
Syntax colouring is off for this document because recolouring something this large on every keystroke would slow typing down. Every tool still works normally.
Runs entirely in your browser. Nothing you paste is uploaded, and you can confirm that in your browser Network tab.
About this tool
This composes engines already used elsewhere on the site rather than a second, possibly disagreeing implementation of the same thing: the candidate schema and TypeScript types come from the same inference the Schema Generator and the JSON to TypeScript tool use, and every JSONPath example shown is run against your own document before being suggested, so it is guaranteed to match something. The structural checks are new: a null finding distinguishes a field that was null in every sample from one that was only sometimes null, an inconsistent type finding is a field whose non-null values disagreed in kind across samples, an inconsistent array finding is an array whose elements either disagreed in kind or did not all carry the same keys, a duplicate key finding is an object key repeated in the source text (which a normal parser would silently resolve by keeping the last one), and a large section finding is a container past a byte or item count threshold. Every check is a description of what this one document contains, not a guess about a fourth sample you have not pasted yet.
How to use
- Paste an API response, or load the sample.
- Press Analyze.
- Read the sections that found something first: an empty section stayed collapsed on purpose.