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AI API Schema Generator

Automatically generate JSON Schema from API responses, supporting OpenAPI 3.0 spec, one-click API documentation and type definitions

Schema Generator Interface

Interactive tool will be available soon

Features

  • Auto-infer data types and structure from JSON responses
  • Supports OpenAPI 3.0/Swagger spec export
  • Auto-generate TypeScript/Python type definitions
  • Smart identification of required and optional fields
  • Supports nested objects and array structure parsing

How to Use

  1. Paste API response JSON data
  2. Select output format (JSON Schema/OpenAPI/TypeScript)
  3. Set field descriptions and constraint rules
  4. Click generate, download Schema file

FAQ

What data formats does the Schema generator support?

Supports standard JSON, JSON Lines, XML input formats. Output supports JSON Schema Draft-07/2020-12, OpenAPI 3.0, TypeScript interfaces and more.

How to ensure generated Schema accuracy?

Provide multiple API response samples from different scenarios. The tool comprehensively analyzes all samples to infer the most accurate data structure. Manual field type and constraint adjustments supported.

Can it generate API documentation?

Yes. Generated OpenAPI Schema can be directly used for Swagger UI documentation, supporting endpoint descriptions, parameter explanations, example values and more.

Does it handle large JSON responses?

Yes. Handles JSON files up to 10MB. For larger responses, extract key parts first for analysis.

Does it support batch generation for multiple endpoints?

Yes. Upload files containing multiple API responses for batch Schema generation, merged into complete OpenAPI documentation.