Asking “what is the contract for this endpoint” is often answered by a wall of example JSON. Deriving a schema from that wall is tedious and wrong more often than you would expect. Inference gets the skeleton right fast.
Paste JSON and it infers a draft-07 JSON Schema with types for each field. Treat the output as a starting point, tighten enums and optionals, and you have documentation that doubles as validation.
Try it now: open the free tool, runs 100{b8b7921c843ac9e5edcbca134af59decad3ed340e0e3b2e6c286158f277affea} in your browser.
Bottom line: infer the schema, then tighten the types it guessed.
Your turn: use the tool free here, no signup, nothing leaves your device.
How do you use JSON Schema Generator?
Open the JSON Schema Generator in your browser (Infer schema from JSON). Type or paste your input, adjust the options, and copy the result. Everything runs locally on your device with no account and nothing stored, so the three steps below take seconds even for confidential work.
- Paste the data or snippet you want to process.
- Run the tool and watch the output update.
- Copy the result for use in your own code.
Try JSON Schema Generator free. It opens right in your browser.