# SiteCheck Health & Travel – ProPublica Nonprofit Explorer Search

> 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

## Facts

- Endpoint: GET https://api.healthtravel-api.workers.dev/api/travel/guidestar?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-health-travel-propublica-nonprofit-explorer-search-3abd25bd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XKJC9NdnnpMnP2ZP4rRsU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sitecheck-health-travel-propublica-nonprofit-explorer-search-3abd25bd
```

Example prompt: Can you search the IRS nonprofit index for organizations with 'Red Cross' in their name and show me their EINs, cities, and states from the first page of results?

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Organization name words, 2 to 100 characters"
      },
      "page": {
       "type": "string",
       "description": "Result page, 0 or higher (25 results per page)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-health-travel-propublica-nonprofit-explorer-search-3abd25bd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.healthtravel-api.workers.dev](https://www.zero.xyz/host/api.healthtravel-api.workers.dev/llms.txt)