Nonprofit & Charity APIs

Nonprofit registries, charity ratings and donation APIs.

JSON: /api/v1/directory.json (filter on category=nonprofit-charity-apis) · Agents can search it with the Swarmnest MCP Server

Free API for searching U.S. tax-exempt organizations and retrieving Form 990 financial filings by EIN.

Free API to search over a million U.S. nonprofits, fetch profiles and logos, and generate donation links.

GraphQL API exposing Charity Navigator ratings, beacons and organization data for U.S. charities.

Candid (GuideStar and Foundation Directory) APIs for nonprofit profiles, essentials data, charity checks and grants data.

API for browsing GlobalGiving's vetted charitable projects and organizations worldwide and processing donations.

Downloadable IRS extract listing every registered U.S. tax-exempt organization with EIN, classification and filing details.

Official API for the register of charities in England and Wales, including details, trustees and financial history.

Embedded giving APIs for searching nonprofits and adding donations to apps, checkouts and employee programs.

Donation API that lets apps route gifts to 1.5 million+ U.S. nonprofits with nonprofit search and tax receipts.

Open data downloads of the Australian Charities and Not-for-profits Commission register and annual information statements.

REST API for IRS-registered U.S. nonprofit lookups, 501(c)(3) status verification and organization details.

APIs for Benevity's corporate giving platform covering cause search, donations, volunteering and grants.

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