The excellent vector database Pinecone has a very useful API, but client support is sparse. While the API and its clients are in theory based off of an OpenAPI spec, no one seems to be able to find it.
But I needed an OpenAPI spec for the API, so I reverse engineered (read: copied and pasted from the documentation) this OpenAPI spec.
It is very new and so should be considered very experimental. If you use it and find a bug, please open an issue, or even better submit a pull request!
Bug fixes will be released as tags so that users can reference a specific version of the spec and have confidence it won't change. Release tags will use the format YYYYMMDD.N.