Ah, seems like the right thing. To be more clear on what I'm looking for is this: the system using the LLM gateway would present an arbitrary user id. Let's say

Ah, seems like the right thing. To be more clear on what I'm looking for is this: the system using the LLM gateway would present an arbitrary user id. Let's say the system has thousands of end-users (completely managed by that system and not configured in the LLM proxy). The admin is interested in blocking end-users from using more than a certain allowed quota.