M
API Matrix

Charity Search API

Business / API Key Intermediate HTTP
Varies by plan (check documentation)
67 Score
Grade C
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Overview

Charity Search lets you look up verified US non-profit organizations by name, EIN, or keyword. Use it to add donation features or vet charities programmatically.

💡

Beginner Tip

Start with a simple name search using the searchTerm query parameter. The free tier returns up to 10 results per request.

Available Data

Use case: Integrate non-profit charity data data into web and mobile applications
Charity Search data via REST API
JSON-formatted response data
Requires API key authentication

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from Charity Search",
    "description": "Non-profit charity data",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

ein Employer Identification Number — the unique tax ID for each non-profit in the US.
name The registered legal name of the charity.
city City where the non-profit is headquartered.
state Two-letter US state abbreviation.
category NTEE category code describing the organization mission area.
deductible Whether donations to this organization are tax-deductible.

Implementation Example 

const url = "http://charityapi.orghunter.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized Missing or invalid API key in the request
✓ Add your key as a query parameter: ?apiKey=YOUR_KEY or in the Authorization header as documented.
Empty results array The search term is too specific or includes typos
✓ Try a shorter, broader keyword (e.g. "cancer" instead of "american cancer society foundation").
429 Too Many Requests Exceeded the rate limit for your plan tier
✓ Add a small delay between requests and cache results you fetch frequently.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 10/20
🔒 Security 5/15
🛠 Developer XP 12/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS NO
CORS UNKNOWN
Category Business
Difficulty Intermediate
Verified: 2026-04-07

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