It seems not have API to update private message https://docs.discourse.org/#operation/createTopicPostPM I want to update a private message Could I use PUT topic to do it? Do you have any idea to update private message?

See How to reverse engineer the Discourse API . You’re on the right track, I think.

It seems blank here: https://meta.discourse.org/t/how-to-reverse-engineer-the-discourse-api/20576/32

Como atualizar uma mensagem privada por API?

pfaffman (Jay Pfaffman) Janeiro 9, 2022, 11:25am 2

Tópico		Respostas	Visualizações
Private Message Send API Support	21	5494	26 de Abril de 2021
Replying to PM via API not working anymore Support	4	985	20 de Abril de 2020
There are 2 IDs when I try to get API, in case of lack documentation Development rest-api	2	837	14 de Janeiro de 2022
Private message with attachment/upload via API Support rest-api	2	83	1 de Outubro de 2025
Move topic / posts to Private Conversation Support	5	2330	31 de Dezembro de 2018