Looks like it's scraping:
70.179.6.X - - [23/Dec/2015:17:15:26 +0000] "GET /wikiviewstats/?page=University_City%2C_San_Diego&latest=60&lang=en&wiki=wikipedia HTTP/1.1" 503 4024 "https://tools.wmflabs.org/xtools-articleinfo/?article=University_City,_San_Diego&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:28 +0000] "GET /xtools-articleinfo/?article=Encanto,_San_Diego&project=en.wikipedia.org&uselang=sw HTTP/1.1" 200 113636 "https://tools.wmflabs.org/xtools-articleinfo/?article=Encanto,_San_Diego&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:30 +0000] "GET /xtools/topedits/?user=Addbot&lang=en&wiki=wikipedia&page=Oak_Park%2C_San_Diego HTTP/1.1" 200 0 "https://tools.wmflabs.org/xtools-articleinfo/?article=Oak_Park,_San_Diego&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:33 +0000] "GET /xtools-articleinfo/?article=Template:University_of_California,_San_Diego&project=en.wikipedia.org&uselang=pi HTTP/1.1" 200 107800 "https://tools.wmflabs.org/xtools-articleinfo/?article=Template:University_of_California,_San_Diego&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:38 +0000] "GET /xtools-articleinfo/?article=Hillcrest,_San_Diego&project=en.wikipedia.org&uselang=nds-nl HTTP/1.1" 200 116271 "https://tools.wmflabs.org/xtools-articleinfo/?article=Hillcrest,_San_Diego&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:45 +0000] "GET /xtools-articleinfo/?article=Tijuana_River_Valley,_San_Diego&project=en.wikipedia.org&uselang=gu HTTP/1.1" 200 83300 "https://tools.wmflabs.org/xtools-articleinfo/?article=Tijuana_River_Valley,_San_Diego&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:46 +0000] "GET /xtools-articleinfo/?article=Category:Neighborhoods_in_San_Diego,_California&project=en.wikipedia.org&uselang=ti HTTP/1.1" 499 0 "https://tools.wmflabs.org/xtools-articleinfo/?article=Category:Neighborhoods_in_San_Diego,_California&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:46 +0000] "GET /xtools-articleinfo/?article=Stockton,_San_Diego&project=en.wikipedia.org&uselang=pfl HTTP/1.1" 499 0 "https://tools.wmflabs.org/xtools-articleinfo/?article=Stockton,_San_Diego&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:50 +0000] "GET /xtools/oauthredirector.php?action=login&callto=https://en.wikipedia.org/w/api.php&returnto=https://tools.wmflabs.org/xtools-articleinfo/?article=Category:University_of_California,_San_Diego&project=en.wikipedia.org&uselang=inh HTTP/1.1" 302 0 "https://tools.wmflabs.org/xtools-articleinfo/?article=Category:University_of_California,_San_Diego&project=en.wikipedia.org&uselang=inh" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)" 70.179.6.X - - [23/Dec/2015:17:15:51 +0000] "GET /xtools-articleinfo/?article=Bay_Terraces,_San_Diego&project=en.wikipedia.org&uselang=af HTTP/1.1" 499 0 "https://tools.wmflabs.org/xtools-articleinfo/?article=Bay_Terraces,_San_Diego&project=en.wikipedia.org" "Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit (KHTML, like Gecko)"
I'm working on blocking this on the nginx level with a pretty 403.