Duck Duck Go API

Our API is a free, no-accounts, XML-based API that gives you access to all of our human powered sources.

To use it, simply add '&o=x' onto any query URL, e.g. http://duckduckgo.com/?q=techcrunch&o=x (view source).

The only thing we ask is you give us attribution and link backs, i.e. "Powered by Duck Duck Go" on each page you use our API.

Responses look like this:

<DuckDuckGoResponse version="0.8">
  <Type>A</Type> 
  <Answer>2 + 2 = 4</Answer> 
  <Heading>Text</Heading> 
  <Image>URL</Image> 
  <Abstract>HTML</Abstract> 
  <AbstractText>Abstract minus HTML</AbstractText> 
  <Results> 
    <Result>HTML
      <Icon height="16" width="16">URL</Icon> 
      <Text>Result minus HTML</Text> 
      <FirstURL>URL</FirstURL> 
    </Result> 
  </Results> 
  <RelatedTopics> 
    <RelatedTopic>HTML
      <Icon height="16" width="16">URL</Icon> 
      <Text>Result minus HTML</Text> 
      <FirstURL>URL</FirstURL> 
    </RelatedTopic> 
 </RelatedTopics> 
</DuckDuckGoResponse>

Notes:

• Anything can be blank.
• Types are: A (article), D (disambiguation), C (category), N (name), E (exclusive), or nothing.
• RelatedTopics can be grouped into sections, e.g.

  <RelatedTopicsSection name="Name">

  (example)
• Results can have multiple links in them.
• Sometimes the return content-type is text/html, but it is really text/xml.
• If at all possible, please include a link back to your service in your useragent when making API requests.

API users:

• Buildasearch (example)