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Convert GraphQL SDL schemas (types, inputs, enums, unions) into static TypeScript interfaces and runtime Zod validation schemas with 100% browser-local privacy.
Paste a sample JSON payload response or GraphQL argument object to test against schema constraints and non-null required fields in real time.
Zero network transmission. Your GraphQL SDL definitions, schema entities, and field names are compiled locally inside browser memory.
Generate static TypeScript interfaces or type aliases alongside runtime Zod validation schemas (`z.object({...})`) with accurate nullability.
Validate sample JSON payload responses or argument objects directly against compiled GraphQL schema constraints in real time.
GraphQL SDL definitions provide strict type contracts for backend graph APIs. However, modern Next.js App Router applications, tRPC handlers, and AI Agent workflows require static TypeScript types for build-time type safety and runtime Zod schemas for form input parsing and LLM argument verification.
Zero network transmission. Your GraphQL SDL schemas, internal query structures, and domain entity models are compiled 100% inside local browser memory.
Parses `type`, `input`, `enum`, `interface`, `union`, and `scalar` definitions with directive stripping and custom scalar type mapping.
Generates static TypeScript interfaces or type aliases alongside runtime Zod validation schemas (`z.object({...})`) simultaneously.
Strictly handles GraphQL non-null flags (`!`) and nested list arrays (`[Post!]!`, `[String]`, `[ID!]`) for precise TypeScript and Zod types.
Test sample JSON response or argument payload instances against compiled schema rules in real time to catch missing required fields.
Includes pre-configured production schema presets (E-Commerce Catalog, User Auth, AI Agent Tools) with 1-click copy and `.ts` file export.
Our browser-local parser analyzes your GraphQL Schema Definition Language (SDL) code, identifies type, input, enum, interface, and union declarations, maps GraphQL scalars to TypeScript and Zod primitives, and generates clean TypeScript interfaces and Zod schemas in real time.
No. The HiMat GraphQL Schema to TypeScript & Zod Generator operates 100% locally in your web browser. Neither your GraphQL SDL text, entity names, nor generated TypeScript code ever leave your device.
In GraphQL SDL, fields are nullable by default and non-null when marked with `!`. Our parser translates `Type!` to required TS properties (`field: type`) and Zod validators (`z.string()`), while nullable `Type` maps to optional TS properties (`field?: type | null`) and Zod `.optional()` or `.nullable()`.
GraphQL provides build-time query contracts, while Zod enables runtime input validation in Next.js Server Actions, tRPC routers, and LLM structured function calling. Converting GraphQL SDL to Zod bridges API definitions with client-side runtime validation.
Yes, 100% free with no account registration required, no usage limits, and zero advertisements.
Convert TypeScript interface definitions and Zod schemas into W3C JSON Schema (Draft 7 / 2020-12) with 100% browser-local privacy.
Convert OpenAPI v2/v3/v3.1 JSON or YAML specs into clean TypeScript interfaces, Zod schemas, and fetch API client helpers locally in browser memory.
Paste a JSON Schema spec (Draft 4/7/2020-12 with $ref, enums, required) and get TypeScript interfaces and Zod schemas. 100% browser-local.
Paste sample JSON or an API response and auto-infer TypeScript interfaces and Zod schemas. No schema needed. 100% browser-local.
Convert SQL CREATE TABLE statements into clean TypeScript interfaces, type aliases, and Zod schemas with 100% browser privacy.
Build, validate, test, and convert JSON schema function calling & tool definitions for OpenAI, Claude, LangChain, and DeepSeek with 100% browser privacy.
HiMat Technologies builds scalable Next.js web applications, GraphQL microservices, and AI agent integrations with type-safe end-to-end architecture.