Codeforces
Get access to Codeforces data
apiKey HTTPS CORS: unknown
Programming
5 APIs
Filters
Hackerearth
For compiling and running code in several languages
apiKey HTTPS CORS: unknown
Judge0 CE
Online code execution system
apiKey HTTPS CORS: unknown
KONTESTS
For upcoming and ongoing competitive coding contests
No Auth HTTPS CORS: unknown
Mintlify
For programmatically generating documentation for code
apiKey HTTPS CORS: yes