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SiteCheck Health & Travel – ProPublica Nonprofit Explorer Search
x402
SiteCheck Health & Travel – ProPublica Nonprofit Explorer Search is a paid API for AI agents from api.healthtravel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Searches US tax-exempt nonprofits by name using the ProPublica Nonprofit Explorer API (IRS Form 990 index), returning EIN, name, city, state, NTEE code, and result count
Price / call$0.002
Success—
StatusUnknown
How this service works
Search US tax-exempt nonprofits (IRS Form 990 index) by name via the ProPublica Nonprofit Explorer API: EIN, name, city, state, NTEE code and total result count. Search results only; financial detail pages are not included. GuideStar itself has no free public API, so this uses ProPublica's index.
Output
Returns a list of matching nonprofit organizations from the IRS Form 990 index via ProPublica, each with EIN, legal name, city, state, and NTEE code, plus a total result count indicating how many organizations matched the query across all pages.
Example use cases
Verify charity's tax-exempt status
“Is 'Doctors Without Borders USA' registered as a tax-exempt nonprofit with the IRS? Can you look it up and give me its EIN and state?”
Find EIN for grant application
“I need the EIN for 'National Wildlife Federation' to fill out a grant application — can you search the nonprofit index and pull it up?”
Explore nonprofits in a sector
“Search for nonprofit organizations with 'housing' in their name and show me the first page of results including their EINs, cities, states, and NTEE codes.”
Technical details
Endpoint
GEThttps://api.healthtravel-api.workers.dev/api/travel/guidestar?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to search the IRS 990 tax-exempt organization index by name — particularly to retrieve EINs, NTEE codes, or location data for nonprofits. Prefer it over GuideStar direct (no free public API) or manual IRS searches. Best for name-based nonprofit lookup; not suitable for full financial statement retrieval, donor data, or non-US charity lookup.
Side effects
- Query string shorter than 2 or longer than 100 characters returns a validation error
- No matching nonprofits found returns an empty result set with zero total count
- Invalid page number (negative or non-integer) may return an error or empty results
- ProPublica API upstream outage causes a service unavailable error
- Misspelled or ambiguous organization name returns unrelated or zero results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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