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Instantly convert OpenAPI 2.0 (Swagger), 3.0, and 3.1 specifications (JSON or YAML) into clean TypeScript interfaces, Zod runtime validation schemas, and type-safe API client helpers. Handles $ref schema resolution, endpoint path responses, sample presets, payload testing, and 100% browser-local privacy.
Your OpenAPI schemas, endpoint routes, and JSON/YAML specifications never leave your local device memory.
Test candidate API JSON response instances against target compiled schemas to verify structural conformance.
Target `Pet` schema conforms to TypeScript type constraints and Zod runtime invariants.
Paste your OpenAPI v2.0/v3.0/v3.1 specification (JSON or YAML) or choose a pre-configured sample preset (Petstore, E-Commerce Orders, AI Agent Search Tool).
Choose output target (Dual TS + Zod, Interfaces Only, Zod Only, or Fetch Client Helpers) and toggle readonly property modifiers.
Copy formatted TypeScript & Zod code blocks directly to your clipboard, validate sample API JSON response payloads, or download ready `.ts` files.
Zero network transmission. Your OpenAPI endpoints, YAML/JSON specifications, headers, and internal schemas stay 100% inside local browser memory.
Parses OpenAPI `components.schemas`, `definitions`, path parameters, request bodies, and response payloads from JSON or YAML files.
Generates both static TypeScript interfaces and runtime Zod validation schemas (`z.object({...})`) with $ref resolution and enum support.
Optionally compiles strongly typed browser/Node `fetch` client wrappers for API path execution directly from OpenAPI path specs.
Test sample API JSON responses against generated Zod validation schemas in real time to catch response drift before deployment.
Includes Petstore API, E-Commerce REST API, and AI Agent Tool Endpoint presets with 1-click clipboard copy and `.ts` file download.
Unlike third-party web tools that upload API specifications over external networks, HiMat's OpenAPI to TypeScript & Zod Generator runs 100% locally in your web browser. Neither your OpenAPI spec, endpoint paths, nor internal schemas leave your local device.
Our browser-local parser extracts OpenAPI/Swagger JSON or YAML schema definitions (`components.schemas` / `definitions` / `paths`), resolves internal `$ref` references, and compiles clean TypeScript interfaces, Zod validation schemas, and type-safe fetch helpers in real time.
No. The HiMat OpenAPI to TypeScript & Zod Generator operates 100% locally in your web browser. Neither your OpenAPI spec, endpoint paths, nor generated code leave your local machine.
Our tool supports OpenAPI v3.1, OpenAPI v3.0, and Swagger v2.0 in both YAML and JSON formats.
OpenAPI specs define external API contracts, while Zod enables runtime validation in Next.js Server Actions, tRPC routers, and LLM agent function calling. Converting OpenAPI to Zod bridges backend specs with client-side runtime type safety.
Yes, 100% free with no registration, no usage caps, and zero advertisements.
HiMat Technology designs and builds production Next.js App Router platforms, AI agent tool integrations, multi-agent orchestrations, and secure backend systems with guaranteed code ownership.
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