DuckDuckGo is a search engine which distinguishes itself by not tracking its users or generating results based on its usersâ€™ previous behavior. The DuckDuckGo Instant Answer API provides free programmatic access to many of the search engineâ€™s instant answers, pulled from over 100 independent sources. Answers include things like topic summaries, categories, disambiguation, redirects, and definitions. Potential uses include defining people, places, things, words, and concepts, providing direct links to other services, listing related topics, and linking to official sites. The API uses RESTful protocol and responses are formatted in JSON.