JSON → Apex DTO Generator
Generate Apex inner classes from a JSON sample. Each nested object becomes its own class; array element types are inferred.
JSON
Apex
Output appears here.
Salesforce DictionarySalesforce DictionarySalesforce DictionarySalesforce DictionaryGenerate Apex inner classes from a JSON sample. Each nested object becomes its own class; array element types are inferred.
Output appears here.When you call an external REST API from Apex, you typically deserialize the response into a typed inner class with `JSON.deserialize`. Writing those classes by hand from a sample response is mechanical and error-prone. This generator takes a JSON sample, walks the structure, and emits an Apex outer class with one inner class per nested object - types inferred from the values you provide.
The generator parses your JSON sample, recurses into each object, and produces a strongly-typed Apex class. Numbers become `Decimal` (or `Integer` if no fractional part is present anywhere in the sample), booleans become `Boolean`, strings become `String`, arrays infer their element type from the first element, and nested objects each become their own inner class with PascalCase names derived from the JSON key. The output is paste-ready into an Apex class file.