Open Calais Blog

Develop a New Drupal Module, Get a Basic Package for FREE for One Year

As you know, there are several third-party solutions which leverage Calais and make its capabilities even better. A Drupal module, which integrates the powers of the Calais Web Service with Drupal, is one of them. This solution integrates the semantic meta-tagging of content through Calais. Unfortunately, with the introduction of our new and improved API […]

Introducing the Tagaroo Plugin

Tagaroo is a WordPress plugin gives you an integration between your WordPress blog and the Calais web service. It leverages the Calais web service to fetch semantic data and return that data as suggested tags. We think it is a great way for bloggers to leverage Calais and we invite you to give it a […]


This is a reminder that the legacy Open Calais API will be retired tomorrow, September 30, 2015 in favor of a new and improved service. The new and improved service offers many advantages, such as enhanced through-put and metadata capabilities. The new service is not fully backward compatible with the legacy Open Calais and will […]

Important Reminder of our Terms of Service

Per our terms of service, all free users are limited to only one API token per user or company. If you are using more than one API token, please take the necessary steps to consolidate your workflows to leverage only one token. Since using more than one API token is a violation of our terms […]

Open Calais Logo Attribution

Per our terms of service for Open Calais, you agree to display the Open Calais logo on your homepage with a link embedded in it which points back to If you have not already done so, please visit our Logos page to download a logo of your choice (we have them in a variety […]

The CalaisModel Abstraction Layer is Available!

A brand new version of the CalaisModel Abstraction Layer has just been released. The Abstraction Layer provides a client API that maps RDF/XML entities to Java objects. The package includes the CalaisModelCreator, a tool used to automatically generate an instance of the CalaisModel, populated with your data. This instance of the CalaisModel enables reading the […]


As you know by now, we are retiring our legacy API service in favor of a new API. Currently, the legacy service is shut down, however we will be restoring service based on various users’ requests starting at 9:30 AM EST on September 9, 2015 until September 30, 2015. Please take this time to visit […]

Open PermID Featured in "ProgrammableWeb"

On September 3, 2015, ProgrammableWeb published a feature on Thomson Reuters’ Open PermID initiative. In the article, Dan Meisner, Thomson Reuters’ head of open data, explains the virtues of PermID and and the public portal for PermIDs, The article explains how PermID is not a new phenomenon at Thomson Reuters; that it has been […]