AddThis Public sharing endpoints & API URL to retrieve total share count for any given URL

Get Total Shares (returns JSON)

http://api-public.addthis.com/url/shares.json?url=http%3A%2F%2Fwww.twitter.com

Share URL Endpoints

Full doco at http://support.addthis.com/customer/portal/articles/381265-addthis-sharing-endpoints#.Uyxmr_l_vEd

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EXAMPLES:

<a href="http://api.addthis.com/oexchange/0.8/forward/facebook/offer?url=http://econsultancy.com" rel="nofollow">Facebook</a>
<a href="http://api.addthis.com/oexchange/0.8/forward/twitter/offer?url=http://econsultancy.com" rel="nofollow">Twitter</a>
<a href="http://api.addthis.com/oexchange/0.8/forward/facebook/offer?url=http://econsultancy.com" rel="nofollow">G+</a>

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ENDPOINT:

/forward/SERVICE_CODE/offer

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PARAMETERS:

url             URL of the page being shared	        string	yes	  http://addthis.com
title           Title of the page being shared	        string	no	  AddThis Home Page
description     Short description of page being shared	string	no	  Awesome page description
pubid           Your publisher profile ID               string	no	  addthis
email_template  Template for email share (pubid req)	string	no	  my_template
ct              Enable click tracking                   string	no	  ct=1

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CUSTOMISING TWITTER SHARING:

You can customize your Twitter shares with a few extra parameters on your request (optional).
These parameters are passed through to Twitter and work as described in their web intents specification.

Optional Twitter Parameters

Name        Description	                                                  Example
text        Text to show in the tweet, instead of the link's title.       Check out this link
via         A Twitter account which is appended to your tweet like:       addthis
            "[text] [url] via @[via]"	                                  
related	    Comma separated list of related twitter accounts, suggested   clearspring,numbakrrunch
            to the user after they tweet.
        
Note: To use these options you must not pass the template parameter which has been deprecated.

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URL SHORTENING:

Providing your account details will integrate your shares with your bit.ly or awe.sm click analytics.
ShareThis will automaticallly shorten urls shared to twitter if they're longer than 40 chars. You can 
request url shortening on any share using their endpoints. Simply add the shortener=bitly parameter 
to your request and the shared url will be shortened with bit.ly before passing it to the destination. 
You can also shorten with your own bitly account by passing these parameters:

shortener=bitly
bitly.login=<your bitly username>
bitly.apiKey=<your bitly api key>

If you have an awe.sm account you can shorten with awe.sm instead:

shortener=awesm
awesm.key=<your awesm Account API Key> (required)

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RATE LIMITING:

Requests will be rate limited at 1000 requests/hour per ip address.

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NOTES:

* Should always include publisher profile ID parameter for analytics purposes
  as per http://support.addthis.com/customer/portal/articles/381216-using-profiles

* If using click tracking, shared page must have AddThis client code to measure clicks