While I have many thoughts about OpenAPI's ease-of-use and readability, I'm going to focus my commentary on the proposal at hand.
1. "The primary goal of this proposal for a major new version of OpenAPI is to make it more approachable in order."
-> This is a sound objective. I'm glad to see less nested structures that will improve readability. It'll make it easier to scroll the JSON/YAML and follow the logic.
2. "OpenAPI has become the defacto standard for API descriptions."
-> With OpenAI's choice to pick OpenAPI as the standard for ChatGPT plugins, this is more true than ever. It's great to see that now giving names to responses will make it easier for AIs (i.e., ChatGPT, Copilot) to call an API more accurately.
3. No mention of improving the quality of codegen (e.g., client libs, server stubs). Surprised that Moonwalk is silent on this topic.
If you dig through enough of the discussions, you will definitely see talk around code gen. There's more discussions happening in the background that haven't really percolated out to the moonwalk repo because it's all pretty hand-wavey right now. My intention, when advocating for OpenAPI 3.1 to adopt JSON Schema 2020-12, which brings custom vocabulary support (which I led the design of for JSON Schema), was for additional vocabularies to improve code generation semantics. This has not really happened (for a variety of reasons including that vocabularies weren't quite done and I ended up unable to follow up on the whole thing for several years).
It's not entirely clear to me where things go from here, but I suspect Moonwalk will address it in some way. I'd like to focus on it some (from the OpenAPI perspective more than JSON Schema, specifically) but I haven't found anyone who would sponsor that work (I guess the dollars are flowing more to these alternatives several folks have mentioned)
1. "The primary goal of this proposal for a major new version of OpenAPI is to make it more approachable in order." -> This is a sound objective. I'm glad to see less nested structures that will improve readability. It'll make it easier to scroll the JSON/YAML and follow the logic.
2. "OpenAPI has become the defacto standard for API descriptions." -> With OpenAI's choice to pick OpenAPI as the standard for ChatGPT plugins, this is more true than ever. It's great to see that now giving names to responses will make it easier for AIs (i.e., ChatGPT, Copilot) to call an API more accurately.
3. No mention of improving the quality of codegen (e.g., client libs, server stubs). Surprised that Moonwalk is silent on this topic.