Open-source Postman alternative with type safety
Hello! This is Jeane and Samuel and we’re building RecipeUI. RecipeUI is an open source Postman alternative that uses TypeScript to statically type and autocomplete requests. We built this because current API tools don’t deal with the fact that some APIs are just painful to work with. For us, it’s usually error after error as we try to figure out how to properly form the first request. We recorded a demo to show you how TypeScript helps us autocomplete a request correctly. https://youtu.be/O_Mly_p-g5s How does our platform improve the developer experience? The analogy is…
Open-source Postman alternative with type safety launched on September 5, 2023 with 275 votes, #126 of 4,228 launches that month and more than 95% of that year's launches. The site was not reachable when checked in September 2026.
In plain words
RecipeUI is an open-source API testing tool for developers that replaces Postman by using TypeScript for static typing and autocomplete. It helps developers construct API requests correctly on the first try through type safety, reducing trial-and-error when working with complex APIs. The tool provides parameter definitions and autocompletion similar to statically typed programming languages, addressing the common frustration of repeatedly consulting documentation and Stack Overflow while building requests.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hello! This is Jeane and Samuel and we’re building RecipeUI. RecipeUI is an open source Postman alternative that uses TypeScript to statically type and autocomplete requests. We built this because current API tools don’t deal with the fact that some APIs are just painful to work with. For us, it’s usually error after…
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Source: Show HN post ↗ · launch text quoted in part
