Data APIs Enhance your own applications with fast, reliable access to the data that powers our newsroom. ProPublica Congress API Free ProPublica Congress API Free The Congress API provides near real-time access to legislative data from the House of Representatives, the Senate and the Library of Congress. It includes details about members, votes, bills and other aspects of congressional activity. Learn more Source Various Updates At least daily Learn more Campaign Finance API Free Campaign Finance API Free The Campaign Finance API provides data from United States Federal Election Commission filings and other sources. The API covers summary information for candidates and committees, as well as certain types of itemized data. Learn more Source Federal Election Commission Updates Every 15 minutes Learn more Nonprofit Explorer API Free Nonprofit Explorer API Free Integrate data on 1.6 million nonprofits into your own applications, including contact information, location, category, and detailed tax filings with details such as executive compensation, revenue and expenses. Learn more Source Internal Revenue Service Updates Annually Learn more Free the Files API Free Free the Files API Free Data on approximately $1.2 billion in political ad buys in 33 markets during the 2012 election. This data set was created by nearly 1,000 volunteers and curated by ProPublica reporters. Learn more Source ProPublica, Federal Communications Commission Updates Deprecated Learn more