Programming APIs

Programming languages and tools

5 APIs in this category
Showing 5 of 5 APIs

Codeforces

Access Codeforces data including contests, user stats, and problem sets via API

Auth: apiKey HTTPS CORS: Unknown

Hackerearth

Compile and execute code in multiple programming languages using HackerEarth API

Auth: apiKey HTTPS CORS: Unknown

Judge0 CE

Open-source online code execution API supporting multiple languages

Auth: apiKey HTTPS CORS: Unknown

KONTESTS

Get data on upcoming and ongoing competitive programming contests

Auth: No HTTPS CORS: Unknown

Mintlify

Generate clean, interactive documentation for your code programmatically

Auth: apiKey HTTPS CORS: Yes

Best Programming APIs for Developers

A programming API allows developers to execute code in multiple languages, perform syntax highlighting, run static analysis, and access programming language metadata without setting up complex infrastructure. These APIs are the backbone of online IDEs, coding challenge platforms, and developer education tools.

CodeHelper's curated programming API collection includes APIs covering code execution, compilers, syntax highlighting, language references, and code quality analysis.

What to look for in a programming API

  • Language support: Verify the API supports all programming languages your platform targets, including version-specific runtimes.
  • Sandbox security: Code execution APIs must isolate user code in secure sandboxes to prevent malicious code from accessing host resources.
  • Execution timeout: Configurable timeouts prevent infinite loops from consuming resources and ensure consistent response times.

How to use this API directory

  1. Browse the curated list of APIs below.
  2. Click any API to visit its documentation.
  3. Check the Auth column to understand what credentials you need.

Whether you are building an online IDE or a coding challenge platform, this free curated API directory saves you hours of research.

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