The diagram
Every HTTP response is a decision.
Send a request from the rail, or call this page's live URL with curl, and watch the flowchart decide the status one question at a time.
WebMacha sandbox
A plain GET for a resource that exists. Every check along the top of the diagram says yes, nothing needs negotiating, no preconditions were sent, and the machine walks straight down to O18 to build the body.
Decision flow
Decision path
Send a request to see its path through the machine.
Request log
No requests yet. Simulated and live requests appear here; select one to replay it.