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Dev tools · June 12, 2025

YAML Studio

Hi HN I built YAML Studio, a visual editor that helps you design complex OpenAPI specs without hand-writing YAML or dealing with $ref headaches. It's a drag-and-drop, form-based tool that generates clean OpenAPI 3.0/3.1 YAML — useful for devs, PMs, and tech writers who want to collaborate on API design without needing deep spec knowledge. Why I built this: I’ve spent countless hours manually writing and debugging OpenAPI files — breaking things with a bad indent or misused $ref. Existing tools like Swagger Editor are great, but still very code-centric. I wanted something more intuitive,…

YAML Studio launched on June 12, 2025 with 7 votes, #3,918 of 7,999 launches that month.

What it does

Build OpenAPI YAML specs visually with drag-and-drop ease. YamlStudio helps devs and API teams skip manual errors, save time, and generate clean, spec-compliant YAML for Function Calling, Swagger, and LLM apps—no coding needed.

In the maker’s words, at launch

Hi HN I built YAML Studio, a visual editor that helps you design complex OpenAPI specs without hand-writing YAML or dealing with $ref headaches. It's a drag-and-drop, form-based tool that generates clean OpenAPI 3.0/3.1 YAML — useful for devs, PMs, and tech writers who want to collaborate on API design without…

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