Exactly. It is pretty common for APIs to actually signal this too. Headers to show usage limits or rates. Good error codes (429) with actual documentation on backoff timeframes. If you use instrument your service to respect read and respect the signals it gets, everything moves smoother. Backing stuff like that back into the MCP spec or at least having common conventions that are applied on top will be very useful. Similarly for things like tracking data taint, auth, tracing, etc ... Having a good ecosystem makes everything play together much nicer.