API user guides

In our user guides, you will find information about our data, what you can build with it, and best practices on how to make the most of our APIs.

If you haven't already, check out our Welcome to Candid's developer portal page to learn how to get started with access to our APIs.

How the user guides are organized

General user guides

The general user guides give you important information to make the most of our API platform.

Overview & onboarding

• Whitelisting your website to bypass GuideStar registration
• API terms of service

Solutions

• For grantmaking
• For donations

Integrations

• Salesforce
  • Candid Connector by ImagineCRM

Endpoint user guides

Individual API endpoint user guides are arranged by category. Each API user guide contains detailed setup instructions, solutions, use cases, and examples.

Nonprofit APIs

• Get started with Essentials API
• Get started with Premier API
• Get started with Charity Check
• Get started with Demographics API

Taxonomy API

• Get started with Taxonomy API

Funding APIs

• Get started with Grants API
• Nonprofit Eligibility API

News & Research API

• Get started with News API

SDK user guides

SDKs

• GuideStar's C# / .NET SDK
• GuideStar's .NET core demonstration website