Re:GitHub Copilot trusted a client header for premium-reques...
by j0selit0 on Wednesday August 19, 2026 @10:28AM
(#49362101)
Follow-up to my previous Copilot/mitmproxy post.
While looking at the traffic I noticed Copilot’s own LLM requests used X-initiator: agent and didn’t consume premium quota. That made me curious what would happen if I changed my own requests from user to agent.
Turns out the model still responded, but those requests didn’t decrement my premium quota or show up in the billing analytics.
While looking at the traffic I noticed Copilot’s own LLM requests used X-initiator: agent and didn’t consume premium quota. That made me curious what would happen if I changed my own requests from user to agent.
Turns out the model still responded, but those requests didn’t decrement my premium quota or show up in the billing analytics.