NEOKYRU
NEOKYRU Free Online Tools
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Developer & Coding Tools
100% Client-Side 100% Client-Side. Confidential API payloads, internal JSON structures, and schemas are parsed strictly in your browser.

Universal JSON to TypeScript, Pydantic, Go & Rust Type Engine

Convert JSON payloads into TypeScript interfaces, Python Pydantic V2 models, Go structs, and Rust Serde types

Universal JSON to TypeScript, Pydantic, Go & Rust Type Engine

Instant type derivation with nested struct recursion. 100% in-browser AST generation with zero server telemetry.

JSON Payload or API Response
Generated TYPESCRIPT Definitions26 lines
export interface ApiResponse {
  userId: string;
  username: string;
  isActive: boolean;
  balance: number;
  tags: string[];
  profile: Profile;
  settings: Settings;
}

export interface Settings {
  twoFactorAuth: boolean;
  theme: string;
  notificationPreferences: NotificationPreferences;
}

export interface NotificationPreferences {
  email: boolean;
  sms: boolean;
}

export interface Profile {
  fullName: string;
  avatarUrl: string;
  reputationScore: number;
}

About Universal JSON to TypeScript, Pydantic, Go & Rust Type Engine

Instant in-browser AST type derivation studio. Paste any raw JSON API response or mock object and instantly generate production-ready TypeScript interfaces, Python Pydantic V2 BaseModel classes, Go structs with json tags, Rust structs with Serde annotations, or JSON Schema Draft 2020-12 specifications. Features deep recursive nested object parsing, PascalCase naming, and zero cloud transmission.

Key Capabilities & Features

  • Multi-target output: TypeScript, Python (Pydantic), Go, Rust (Serde), and JSON Schema
  • Deep recursive model generation for nested objects and heterogeneous arrays
  • Configurable root model name and automatic PascalCase type naming
  • One-click code download with matching file extensions (.ts, .py, .go, .rs, .json)
  • Zero telemetry: complete privacy for enterprise API payloads

How to Use Universal JSON to TypeScript, Pydantic, Go & Rust Type Engine

1

Paste JSON Data

Paste your raw JSON payload or API response in the input editor.

2

Choose Target Language

Select TypeScript, Python Pydantic, Go, Rust, or JSON Schema.

3

Copy Generated Models

Copy the typed definitions or download them directly into your codebase.

Privacy & In-Browser Execution Guarantee

100% Client-Side. Confidential API payloads, internal JSON structures, and schemas are parsed strictly in your browser.

Frequently Asked Questions

How does the tool handle nested objects?

Nested JSON objects are recursively traversed, producing separate, cleanly named child interfaces or struct models that are referenced by the parent model.

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