Twitter is acquiring Gnip, a social data provider, Mashable reports.

The value of the deal was not immediately disclosed, but Gnip has raised $6.6 million in funding. Gnip was the first company to be authorized to resell Twitter's historical data.

Twitter and Gnip announced a partnership in 2010 that provided the "firehose" of data to clients, helping to monetize Twitter's user base.

"We want to make our data even more accessible, and the best way to do that is to work directly with our customers to get a better understanding of their needs. To that end, we have agreed to acquire Gnip, a leading provider of social data and a long-standing Twitter data partner," Twitter wrote in a blog post.

Gnip was founded in 2008 and claims to be Twitter's first data partner. It works with a variety of clients including Tumblr, WordPress and Foursquare. It also provides Twitter data to the Library of Congress.

The company also features data from Sina Weibo, a popular Chinese service similar to Twitter.

"Combining forces with Twitter allows us to go much faster and much deeper. We’ll be able to support a broader set of use cases across a diverse set of users including brands, universities, agencies, and developers big and small," Gnip said in a statement on its blog.

The acquisition of Gnip is Twitter's first since its purchase of MoPub, a mobile advertising exchange, in September for $350 million in stock.