Business — entry 002 of 19
Charity Search
CharityAPI (rebranded from OrgHunter) looks up US nonprofits by EIN across basic profile, financial, geolocation, and NTEE-classification datasets, sourced from IRS filings and pitched at donation platforms and vetting tools. Its real backend at `data.orghunter.com` trades a query-string `user_key` for JSON responses and rejects unauthenticated calls with a 403, and offers free development-phase API keys with production usage gated behind paid or affiliate-only plans.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSDisabledBrowser calls need a server-side proxy.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score75
Authentication15/25API key required
Pricing17/20Freemium tier available
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/charity-search/"><img src="https://greatapis.com/badge/charity-search.svg" alt="Scored 75 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.