Currently the apps sdk supports OAuth based authentication for users if I want them to sign up to my account. But what if instead of that I just want to have an identifier for each user when they trigger the usage of my app and map that identifier to my internal user id.
Currently with every tool call the apps sdk sends a openai/subject in the meta field of the request body.
The description for this field is Anonymized user id sent to MCP servers for the purposes of rate limiting and identification . But the actual id i receive is of the format v1/←uuid->.
Is there a chance this anonymous id will change in the future? If that happens the whole mapping becomes void.