Using programmatically requires a Calais API key. You can get yours by registering at the Calais site. If you already have a Calais access key - it will work fine for SemanticProxy. 

Using is very simple - it follows the Standard for publishing Linked Data on the web. Use the tool below to explore formatting options for your call.  


Basic URL:
Open Calais API Key: 
Output: HTML   RDF   JSON   Microformat  
News article:


Formated URL:


Clear Go



A couple of notes:

  • We cache aggressively. In most cases for up to 10 minutes.
  • We rate limit requests according to the Calais API usage rules.
  • We blacklist selected sites. Sorry - that's just the way it is. is in Beta. No guarantees, no promises. is part of the Calais Initiative. Learn more at