That particular part is detailed on the knowledge base [0], so... Yes? For just this bit. But I don't think the full API is documented. There are some attempts

That particular part is detailed on the knowledge base [0], so... Yes? For just this bit. But I don't think the full API is documented. There are some attempts to reverse engineer an API from the WebClient [1], but they tend to be... Brittle. [0] https://protonmail.com/support/knowledge-base/download-public-private-key/ https://protonmail.com/support/knowledge-base/download-publi... [1] https://github.com/ProtonMail/WebClient https://github.com/ProtonMail/WebClient