About
About Schemato
Schemato is a free, open source converter for turning schemas and sample payloads into typed code. It is built for developers who need a fast starting point for TypeScript, Zod, Pydantic, Go structs, Rust structs, Swift, Kotlin, Java records, C# records, Dart, PHP, Ruby, Yup, and Joi.
Why it exists
Many teams copy API responses, OpenAPI schemas, SQL table definitions, or GraphQL types into application code by hand. That works once, but it becomes slow and error-prone when projects span multiple languages.
Schemato focuses on the small workflow between a heavy code generator and manual typing: paste one representative input, review the generated output, then copy it into your project and adjust the details that only your codebase knows.
How it works
Conversion runs in your browser. The site uses a small parser to turn inputs into an intermediate Shape model, then renders that shape into the selected output language. This keeps the project small enough to inspect and extend without a backend conversion service.
The source code is public on GitHub. Feature requests, bug reports, and converter quality issues are best opened there so examples can be tracked.
Browser-only conversion
Pasted schemas and payloads are processed locally in the browser and are not sent to a conversion API.
Open source
The parser and renderer code lives in the public repository so the generated output can be inspected and improved.