Open Calais API

Getting Started with Thomson Reuters Open Calais™ API

Here’s how to get started in three easy steps: get an API key, develop or get an application that uses Open Calais API functionality and then get going.

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Get an API Key


Register and we will send your API key to your email address.



Add sentiment scores to Open Calais – with Finch Computing



To learn more – Go to Open Calais Developers’ Community