Covid Tracking Project API

Overview

Measurement Record

What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.

Request

GET https://api.covidtracking.com/v2/us/daily.json?limit=5

Result

HTTP 200 · application/json · 424,149 bytes · compressed

Response time

36 ms (median of 3) · fastest 32 ms

Transport

TLSv1.3 · TLS_AES_256_GCM_SHA384 · certificate issued by Google Trust Services

Browser CORS

Allowed — Access-Control-Allow-Origin: *

Served by

cloudflare

Recorded

2026-08-10

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

{
  "name": "Bohemian Rhapsody",
  "artist": "Queen",
  "album": "A Night at the Opera",
  "duration_ms": 354000,
  "popularity": 92,
  "preview_url": "https://p.scdn.co/mp3-preview/..."
}

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

const url = "https://api.covidtracking.com/v2/us/daily.json?limit=5";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

import requests

url = "https://api.covidtracking.com/v2/us/daily.json?limit=5"
headers = {}

response = requests.get(url, headers=headers, timeout=30)
response.raise_for_status()
data = response.json()
print(data)

curl "https://api.covidtracking.com/v2/us/daily.json?limit=5"

What Can You Build?

// Fetch health data
const response = await fetch(`https://covidtracking.com/data/api/version-2`);
const data = await response.json();
console.log('Health data:', data);
const info = data.data || data.results || data;
console.log('Details:', JSON.stringify(info, null, 2));

// Get health metrics and statistics
const response = await fetch(`https://covidtracking.com/data/api/version-2`);
const data = await response.json();
const metrics = data.metrics || data.stats || data;
document.getElementById('health-stats').innerHTML =
  `<pre>${JSON.stringify(metrics, null, 2)}</pre>`;
console.log('Health metrics loaded from Covid Tracking Project');

// Search health-related information
const query = 'nutrition';
const response = await fetch(`https://covidtracking.com/data/api/version-2`);
const data = await response.json();
const results = data.results || data.data || [];
results.slice(0, 5).forEach(item => {
  console.log(`🏥 ${item.name || item.title}: ${item.description || ''}`);
});

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

How This API Fails

We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.

{
  "error": true,
  "message": "Data not found. Note that state codes in URLs should be lower case, for example, /api/v1/states/ca/info.json instead of /api/v1/states/CA/info.json."
}

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.