Senfluence is formed by 2 words: sentiment and influence. The goals of this API are to understand sentiments and to analyze the popularity of websites in 13 languages. When users are redirected to the get demo link, they will first see the benefits that include to obtain a sentiment analysis based on positive, negative and neutral feedback and to score documents based on keywords. Other uses of the API consist in adding scores to developers' tools and analyze non social media web documents. This API supports JSON format. In the site, developers will find an API key, an API syntax for JSON,and an API response.