Programming — entry 002 of 4
Hackerearth
HackerEarth's v4 Code Evaluation API lets registered client applications submit source code in dozens of languages for asynchronous sandboxed compilation and execution, returning results via a callback URL rather than a blocking response. Every call must carry a client-secret issued after registering a web application, confirmed live by a real request that failed with "client_secret is needed!" rather than any generic error. HackerEarth's own docs describe a cap on both the number of registered clients and the number of free requests per account, with no public self-serve pricing page — consistent with a freemium model gated behind manual registration rather than an open paid tier.
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<a href="https://greatapis.com/api/hackerearth/"><img src="https://greatapis.com/badge/hackerearth.svg" alt="Scored 61 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.