JSON → Zod
JSONGenerate Zod schemas from JSON
Unlike JSON to TypeScript, which only gives you compile-time types that vanish at runtime, this generates a Zod schema you can actually call to validate untrusted data (API responses, form submissions, webhook payloads) as your program runs. Paste a JSON object and get back Zod's `z.object({...})` syntax as a starting point, then tighten it by hand with things like `.email()` or `.min()` that a single sample can't tell the generator to add. It targets Zod specifically rather than other validators, and since it infers types from one example, real-world optionality and nullability usually need manual adjustment afterward.
jsonzodschemavalidate
How to use JSON → Zod
- 1.Paste a JSON object to generate a matching Zod schema you can use to validate API responses or form input at runtime.
- 2.Use the generated schema as a starting point, then tighten it with `.min()`, `.email()`, or `.optional()` for fields the sample alone can't tell you about.
- 3.Regenerate after an API response shape changes to quickly spot which validators need updating.
Frequently asked questions
Will the schema know a field is optional or nullable?
Only if your sample JSON shows `null` for that field — since the schema is inferred from one example, you'll often need to manually mark fields `.optional()` or `.nullable()` for real-world variability.
Does it validate the JSON, or just generate the schema?
It only generates the Zod schema code; you then use that schema in your own project to actually validate data.
Is this specific to Zod, or does it support other validators?
This tool targets Zod specifically. For TypeScript types without runtime validation, use the JSON → TypeScript tool instead.
Is my JSON sent anywhere?
No, schema generation runs locally in your browser.
Use via API, SDK, or MCP
Installnpm install @utilix-tech/sdkUsageimport { json } from '@utilix-tech/sdk'
const result = json.jsonToZod('{"name":"Alice","age":30}')
console.log(result) // import { z } from 'zod'\n\nexport const RootSchema = z.object({ name: z.string(), age: z.number() })Runs locally · no API key · no rate limits · Node.js SDK docs →