on the stats page, it says I have 3.5% stale rate but on my miner it says only 0.3% rejected. is there something else I need to put into account? thanks pw 
This could be as simple as variance in shares/stales. If your 0.3% is over 24hrs, and just in the last 15min there was a burst, we'd be showing the burst, and yours wouldn't. Can you reset your stats locally, wait 15min and see how they line up?
Yup, you are right. 0.3% is over 24 hours. And the stale rate is now 0.00% on stats page. Thanks
Yep, could have been something as simple as us jumping on a small coin, and seeing a slightly higher reject rate during that time
\\Is it possible to add the reject rate in the API ?
Yep, gimme a bit here