GuideStar APIs

Power your websites and applications with GuideStar’s comprehensive nonprofit data.

Get the data you need

Save time and keep your users on your site or app with GuideStar’s application programming interfaces (APIs). Our Nonprofit APIs let you: 

  • Embed a charity search into your website, intranet, and programs
  • Incorporate nonprofit data into an app or program 
  • Verify the status of individual organizations or several nonprofits at once
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Most popular

GuideStar Essentials API

Boost your nonprofit search, get access to basic nonprofit information.

Starting at

One-time annual payment


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  • Search  and discover 1.6 million nonprofits directly by name, keyword, or EIN
  • Use advanced criteria to filter results by cause area, location, financials and more
  • Access over 40 fields of essential nonprofit data including mission, website, financials, logo and contact information
Most powerful

GuideStar Premier API

Power your application with robust financials, organizational information and effortless nonprofit compliance validation — our most comprehensive API.

Starting at

One-time annual payment


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  • Dive into a nonprofit’s details including program results, people, operations, and more 
  • Analyze robust financial information to uncover trends and determine financial health
  • Access over 230 additional data fields and download tax forms, reports, and key documents
  • Includes Essentials API and Charity Check API at no additional cost

GuideStar Charity Check API

Save time and ensure the nonprofits you  support are 100% IRS compliant.

Starting at

One-time annual payment


Get in touch
  • Ensure charities are compliant within key databases including IRS Publication 78, IRS Business Master File, Internal Revenue Bulletin, Automatic Revocation of Exemption, and OFAC Specially Designated National list
  • Gather additional details to support decision making like organization type, deductibility limitations, religious organization status, revocations, and more
  • Download date and time stamped charity check PDF documentation to archive for due diligence

Try out any GuideStar API for free for 30 days


Hundreds of partners have integrated GuideStar APIs

Our APIs have been used more than 100 million times

Last year, millions of people used our APIs to guide their giving decisions

What's new with GuideStar APIs?

Premier version 3 has launched. Try it out now.

  • Access to additional financial insights to give you a detailed view of a nonprofit.
  • Keep abreast of which nonprofits have United Nations Sustainable Development Goals (SDGs).
  • More accurate nonprofit information, we upgraded our complete data set to Philanthropy Classification System (PCS) Codes.
  • Geo targeting made easier with county name and latitude and longitude calculated to the organization’s street address for greater location accuracy.
  • Revised and expanded Diversity, Equity and Inclusion (DEI) Fields including quantifiable, self-reported data from an organization.

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Satisfied API customers

Network for Good
“The accuracy, comprehensiveness, and reliability of the data that GuideStar provides help us to be more efficient and effective.”

—Julie Russell
Senior VP, United Way of Greater St. Louis

“We’re meeting real client needs and adding credibility to our brand via our relationship with GuideStar because GuideStar is a trusted brand in the nonprofit world.”

—Daren Nordhagen
President, Foundant Technologies

“GuideStar is the most legitimate and all-encompassing solution on the market. I came out with a vision, and GuideStar was able to back it up.”

—Stephen Garten
CEO & Founder, Charity Charge