Turn OpenAPI to Universal TypeScript SDKs
Hi HN! We’re excited to share our new code generator that lets you ship high-quality TypeScript SDKs, that your users will love, from your OpenAPI documents. Our ongoing goal is to help you build one SDK that runs anywhere modern JavaScript runs. This includes new runtimes like Deno and Bun in addition to the ever-popular Node.js. Additionally, the popularity of AI has meant server-sent events and file streaming are also commonplace - we wanted to cover these use cases too. This explosion in new runtimes and ways of interacting with APIs shifts cognitive burden on API developers often having…
In plain words
A code generator that transforms OpenAPI documents into TypeScript SDKs compatible across multiple JavaScript runtimes including Node.js, Deno, and Bun. The tool is designed for API developers who need to support diverse environments and modern API interaction patterns like server-sent events and file streaming. It aims to reduce the complexity of maintaining separate SDKs for different platforms by generating universal, high-quality TypeScript libraries from a single OpenAPI specification.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hi HN! We’re excited to share our new code generator that lets you ship high-quality TypeScript SDKs, that your users will love, from your OpenAPI documents. Our ongoing goal is to help you build one SDK that runs anywhere modern JavaScript runs. This includes new runtimes like Deno and Bun in addition to the ever-popular Node.js. Additionally, the popularity of AI has meant server-sent events and file streaming are also commonplace - we wanted to cover these use cases too. This explosion in new runtimes and ways of interacting with APIs shifts cognitive burden on API developers often having to work with different technologies when integrating an API. At Speakeasy we set out to create a “Universal Typescript SDK” that would work across browser, servers and other runtimes. There are a number of open source generators out there but none of them provided enough coverage across the variety of APIs we see modelled with OpenAPI. Some of the requirements we tried to hit in this release: - Compatibility with the browser & server - Support for popular, backend JavaScript runtimes including Node.js, Bun, Deno - User input and server response validation with Zod - Support for polymorphic types, also known as unions or `oneOf` in OpenAPI. - Support for constant and default values, big integers and decimals - Support for multipart streaming upload - Support for server sent events using native OpenAPI constructs We want to give a special shout out to Zod because it served as a great foundation for translating all the JSON Schema primitives used in OpenAPI into TypeScript types that you can trust. By this we mean that the types are backed by runtime validation so vanilla JS users have a safeguard and servers that drift from their OpenAPI spec are caught instead of silently failing or triggering obscure runtime errors. If you’re curious to dive into our learnings check out this post https://www.speakeasyapi.dev/post/how-we-built-universal-ts We’d love for folks to check out our new generator and give us feedback. Its really easy to get started. Install our CLI with `brew install speakeasy-api/homebrew-tap/speakeasy` and run `speakeasy generate sdk -s openapi.yaml --output ./sdk -l typescript` . If you want to chat directly with us you can reach us on slack : https://join.slack.com/t/speakeasy-dev/shared_invite/zt-1cwb... .
More ai this month
the category →
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com
Astute▲585Automate your B2B brand going viral, with new media creators
AI · 18d ago · company-app.joinastute.com
Hey HN, Henry from Cactus here! We previously released Cactus Needle, a 14MB agentic LLM for tool call, device use, and structured extraction for phones, wearables, smart homes, small robots and microcontrollers. We got really great feedback here, and have now incorporated the suggestions to release Needle 2. The whole model is a single 14MB binary that runs a full session in 28MB of RAM; 45m parameters at 2bit compression. Needle hits 500 tokens/sec decode speed on a Raspberry Pi 5, sits between 400-1,500 tokens/sec on VR devices like Meta Quest 3S and Apple Vision Pro, and ranges…
AI · 26d ago · cactuscompute.com
Launched alongside, January 2024
the whole month →
- IM
Life & fun · 2024 · sitinshade.com
