--- title: Massimo: Type-Safe API Client generator | daily.dev description: Massimo is a type-safe API client generator that evolved from @platformatic/client, now supporting both OpenAPI and GraphQL schemas. It offers dual... canonical: https://daily.dev/posts/massimo-type-safe-api-client-generator-6uoslwwtk twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Massimo: Type-Safe API Client generator | daily.dev og:description: Massimo is a type-safe API client generator that evolved from @platformatic/client, now supporting both OpenAPI and GraphQL schemas. It offers dual... og:url: https://daily.dev/posts/massimo-type-safe-api-client-generator-6uoslwwtk og:image: https://api.daily.dev/og/posts/6UoSlWwtK.png og:image:alt: Massimo: Type-Safe API Client generator 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. # Massimo: Type-Safe API Client generator **[Platformatic](https://daily.dev/sources/platformatic)** · 8 min read · 58 upvotes · 1 comments ## Summary Massimo is a type-safe API client generator that evolved from @platformatic/client, now supporting both OpenAPI and GraphQL schemas. It offers dual architecture with both code generation (massimo-cli) for build-time client creation and runtime library (massimo) for dynamic client generation. The tool generates TypeScript-first clients for both server-side (using Undici) and frontend (using native fetch) environments, with enterprise-grade features including authentication, validation, and telemetry support. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@rallisf1** · 1 upvotes > OMG, I was just searching for OpenAPI client generators 2 days ago. Thanks for this gem! ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments - [CNCF Unveils Schedule for KubeCon \+ CloudNativeCon Europe 2026](https://daily.dev/posts/cncf-unveils-schedule-for-kubecon-cloudnativecon-europe-2026-ikhcoa5cb) · CNCF · 2 upvotes · 0 comments - [CNCF Debuts KubeCon \+ CloudNativeCon Japan 2026 Schedule](https://daily.dev/posts/cncf-debuts-kubecon-cloudnativecon-japan-2026-schedule-xp5pyudub) · CNCF · 1 upvotes · 0 comments --- Tags: [#typescript](https://daily.dev/tags/typescript), [#graphql](https://daily.dev/tags/graphql), [#openapi](https://daily.dev/tags/openapi) [View this post on daily.dev](https://daily.dev/posts/massimo-type-safe-api-client-generator-6uoslwwtk) ```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":"TechArticle","headline":"Massimo: Type-Safe API Client generator","url":"https://daily.dev/posts/massimo-type-safe-api-client-generator-6uoslwwtk","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/massimo-type-safe-api-client-generator-6uoslwwtk"},"datePublished":"2025-09-01T14:27:11.594Z","dateModified":"2025-09-01T14:27:33.512Z","description":"Massimo is a type-safe API client generator that evolved from @platformatic/client, now supporting both OpenAPI and GraphQL schemas. 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