How to Choose the Best Programming API in 2026

Quick Comparison: Top 4 Programming APIs

Ranked by API Score. Measured means we called a real endpoint of that API; Est. means the score is derived from metadata because the endpoint could not be called without credentials. Discontinued APIs are excluded.

Try It in 5 Minutes: Codeforces

Quick implementation example using Codeforces.

curl -X GET "https://codeforces.com/api/user.info?handles=tourist"

const url = "https://codeforces.com/api/user.info?handles=tourist";
// 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);

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Frequently Asked Questions