This is a submission for the Hermes Agent Challenge: Write About Hermes Agent
The header looks trivial. One line. But it's doing something architecturally significant. Here's exactly what happens when you pass X-Hermes-Session-Id to Hermes — and why it matters more than it appears.
The Naive Mental Model (and Why It's Wrong)
Most developers assume persistent session = stored chat history. Request comes in → look up conversation log → prepend to messages → send to LLM. Like a database-backed chatbot.
That's not what Hermes does.
