OpenAPI to Zod examples
Turn OpenAPI schemas into Zod validators and lightweight typed fetch clients.
User API components
OpenAPI 3 schemas with required fields, arrays, nullable fields, and formats.
{
"openapi": "3.1.0",
"info": {
"title": "Users API",
"version": "1.0.0"
},
"components": {
"schemas": {
"User": {
"type": "object",
"required": [
"id",
"email",
"roles"
],
"properties": {
"id": {
"type": "string"
},
"email": {
"type": "string",
"format": "email"
},
"roles": {
"type": "array",
"items": {
"type": "string",
"enum": [
"admin",
"editor",
"viewer"
]
}
},
"profile": {
"$ref": "#/components/schemas/Profile"
}
}
},
"Profile": {
"type": "object",
"properties": {
"website": {
"type": "string",
"format": "uri"
},
"timezone": {
"type": [
"string",
"null"
]
}
}
}
}
}
}Open exampleUse these examples with guides
OpenAPI to Zod converter
Convert OpenAPI or Swagger schema components into runtime Zod validators.
Zod API schemas
Validate request bodies and API responses with Zod before data reaches application code.
OpenAPI to Zod for tRPC
Use contract-first OpenAPI schemas with Zod validation around tRPC-style TypeScript procedures.
Nullable OpenAPI field errors
Fix Zod parse failures when OpenAPI nullable fields are generated as optional or non-null schemas.
Zod to JSON Schema Converter
Use the opposite direction when TypeScript-owned Zod schemas need portable JSON Schema output.
Zod API schemas
Convert TypeScript-owned Zod contracts into OpenAPI-compatible schema objects.
openapi-zod-client alternatives
Compare the openapi-zod-client npm package with the browser-only OpenAPI to Zod converter and manual schemas.
FrameworkKit vs OpenAPI code generators
Compare FrameworkKit with openapi-zod-client, Orval, and Kubb for OpenAPI to Zod workflows.