--- title: OpenAPI to TypeScript Generator | daily.dev description: A TypeScript code generator that creates fully-typed Zod v4 schemas and type-safe REST API clients from OpenAPI specifications. Features include support for... canonical: https://daily.dev/posts/lfu0ssams twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenAPI to TypeScript Generator | daily.dev og:description: A TypeScript code generator that creates fully-typed Zod v4 schemas and type-safe REST API clients from OpenAPI specifications. Features include support for... og:url: https://daily.dev/posts/lfu0ssams og:image: https://api.daily.dev/og/posts/lfu0SsAms.png og:image:alt: Post cover image og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # OpenAPI to TypeScript Generator **[Luther Blisset](https://daily.dev/sources/qdhuypqoslpimby4hrlxx)** · [@gunzip](https://daily.dev/gunzip) · 0 upvotes · 0 comments ## Summary A TypeScript code generator that creates fully-typed Zod v4 schemas and type-safe REST API clients from OpenAPI specifications. Features include support for OpenAPI 2.0, 3.0.x, and 3.1.x, comprehensive validation, error handling with discriminated unions, and minimal dependencies. The tool generates both client and server code with tree-shakable imports and never-throwing client calls. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#typescript](https://daily.dev/tags/typescript), [#openapi](https://daily.dev/tags/openapi), [#zod](https://daily.dev/tags/zod) [View this post on daily.dev](https://daily.dev/posts/lfu0ssams) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/lfu0ssams","headline":"OpenAPI to TypeScript Generator","text":"Shared: OpenAPI to TypeScript Generator","url":"https://daily.dev/posts/lfu0ssams","datePublished":"2026-01-12T11:01:57.811Z","dateModified":"2026-01-12T11:01:57.813Z","author":{"@type":"Person","name":"Luther Blisset","url":"https://daily.dev/gunzip","image":"https://media.daily.dev/image/upload/s--uxuGKUMB--/f_auto/v1757449828/avatars/avatar_qdhuypqOSLpiMBY4hRLXX?_a=BAMClqZW0","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":20}},"image":"https://media.daily.dev/image/upload/s--OHB84bZF--/f_auto/v1722860399/public/Placeholder%2010","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/Hs8BNsj1b"},"isPartOf":{"@type":"WebPage","url":"https://daily.dev/sources/qdhuypqoslpimby4hrlxx","name":"Luther Blisset"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Luther Blisset","item":"https://daily.dev/sources/qdhuypqoslpimby4hrlxx"},{"@type":"ListItem","position":3,"name":"OpenAPI to TypeScript Generator"}]} ```