GuideStar APIs (Application Programming Interfaces)

Save time with the most trusted nonprofit APIs in the sector

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Please contact our Sales Department for more information by calling 866-710-7663 or sending an email to sales@guidestar.org.

Does your company, developer, website, or software need access to our comprehensive nonprofit information? We have an API for that.

Next Generation Data.
Faster Delivery.

What is an API?

An API is an application programming interface. It is a way for GuideStar’s extensive nonprofit database to “talk” to your organization’s website or software. For more information, see our developer resources.

How will a GuideStar API help my organization?

APIs provide seamless access to the most up-to-date nonprofit information, directly from the world's largest database of nonprofit information to your website. GuideStar APIs save your customers valuable time and keep them on your site. You can choose from a variety of search and verification packages that can display within your system the information you want in a format that meets your needs.

Michael Gale,GlobalGiving  GG2015_Logo_horizontal_black.png

6 great reasons to choose GuideStar APIs 

1

Easier Integration

Modern data formats and technologies (JSON, XML) to encourage adoption

2

Performance

10x faster than older technologies

3

Pricing

More flexible pricing

4

Reliability

Built around a highly available technology stack with database fail-over in the event of a failure of the primary system

5

Scalability

Built to handle significantly more transactions than older technologies

6

Selection

Provide a greater range of data than available on our site alone

iDonor, the cross-mobile interface donation payment gateway iDonor

Get your organization’s developers in the discussion—
ask them how GuideStar APIs can benefit your organization

https://data.guidestar.org is just for developers!

Explore our APIs

Which APIs Are Right for You?

Who Are You?What Do You Want to Do?Your API Solutions
Donation portal Let my users find their charities of choice GuideStar Search API
Donation portal Let my users see information about charities before they donate GuideStar Detail API OR GuideStar Exchange API
Provider of grants management software Let my customers streamline their grantmaking processes for themselves AND for the nonprofits that apply to them for grants GuideStar Exchange API
Provider of grants management software Let my customers verify nonprofits’ eligibility for grants directly from my software GuideStar Charity Check API
Provider of grants management software Let my customers get the other information they need for due diligence directly from my software GuideStar Exchange API
Sponsor of donor-advised fund(s) Let my donors find their charities of choice GuideStar Search API
Sponsor of donor-advised fund(s) Let my donors see information about charities before they donate GuideStar Detail API OR GuideStar Exchange API
Sponsor of donor-advised fund(s) Verify nonprofits’ eligibility to receive distributions GuideStar Charity Check API
Grantmaker Streamline the application process for both my organization and the applicants GuideStar Exchange API
Grantmaker Verify nonprofits’ eligibility for grants from my organization and incorporate that information into the grants management software I use GuideStar Exchange API
Grantmaker Get the other due-diligence information I need and incorporate it into the grants management software I use GuideStar Charity Check API
Shopping portal Offer my customers information on cream-of-the-crop charities that they can support through my service GuideStar Search API AND GuideStar Exchange API
Vendor to the nonprofit industry Verify that the customer that wants my goods and services is a nonprofit and help them register GuideStar Search API PLUS GuideStar Detail API AND GuideStar Charity Check API
Business Integrate nonprofit information into my CRM by populating very basic fields in my system. I’ll fill in the rest of the details myself GuideStar Search API
Business Verify charities for employee donation matching, fundraising, and volunteering GuideStar Search API AND GuideStar Charity Check API
Business Integrate charity verification into my software for my end user GuideStar Search API AND GuideStar Charity Check API
Business Let my website users find basic information on the charities they’re interested in GuideStar Search API

“The GuideStar Search and Exchange APIs are crucial parts of information about nonprofits that integrated easily with our services, and both take a huge responsibility off our plate as well as let us focus on our core competencies: Delivering engaging online giving solutions to our non-profit customers."

—Brendon Thomas, President, Okanjo

okanjo

Learn More about Our APIs

Our APIs give you more ways—including JSON and XML—to access our comprehensive, high-quality information about nonprofits across the country.

The fully RESTful APIs are:

GuideStar Charity Check API

GuideStar Charity Check is the only pre-grant due-diligence tool that is 100% compliant with all IRS requirements for verifying a nonprofit's eligibility to receive tax-exempt gifts and payouts. The GuideStar Charity Check API provides this essential information via our RESTful API in XML or JSON formats.
View available fields. Starting at $3,750 per year

GuideStar Exchange API

The GuideStar Exchange API provides rich nonprofit-supplied data, obtained through GuideStar Nonprofit Profiles, for integration into your application or website.
View available fields. Starting at $5,000 per year

GuideStar Search API

Search GuideStar's most common sets of nonprofit data to find organizations most relevant to your users or target your searches to narrow in on a specific set of organizations.
View available fields. Starting at $5,000 per year

GuideStar Detail API

The GuideStar Detail API combines nonprofit-supplied data from GuideStar Nonprofit Profiles with data from other sources to provide comprehensive information about millions of organizations.
View available fields. Starting at $6,250 per year

QuickStart Search API

Search our most common sets of nonprofit data. There is no charge for this API, but use is limited to 250 hits per month.
Add to Cart

QuickStart Detail API

Get rich nonprofit-supplied GuideStar Nonprofit Profile information combined with data from other sources for millions of organizations. There is no charge for this API, but use is limited to 250 hits per month.
Add to Cart

Learn more about our API capabilities and comprehensive nonprofit information by viewing our developer resources. If you are interested in bundling APIs to meet your needs, please contact our Sales Department for more information by calling 866-710-7663 or sending an e-mail to sales@guidestar.org.

Explore Developer Resources

Calling all Developers:
Want to See How Our APIs Work?

Our Sandbox APIs let you test our APIs on your website or in your software. These free demo versions are exactly like our regular APIs, except they draw from old data and can only be used internally for product evaluation.

And upgrading from a Sandbox API to a subscription API is a snap.

Click the Add to Cart button to access the Sandbox API(s) you want. Sandbox APIs don't expire, and you are welcome to test as few or as many as you wish.

Explore GuideStar’s Sandbox APIs

Add to Cart

Sandbox Charity Check API

Add to Cart

Sandbox Exchange API

Add to Cart

Sandbox Search API

Add to Cart

Sandbox Detail API

Note: Sandbox APIs are available for internal product evaluation only. Commercial use is prohibited.