John's API Certificates
Design (1)
Fundamentals of RESTful API Design from Apigee

Generative AI (2)
OpenAI Chat Completions API from Pluralsight by Xavier Morera

OpenAI Assistant API from Pluralsight by Xavier Morera

Security (5)
OWASP Top 10 from Snyk

Snyk Top 10 from Snyk

Security for Developers from Snyk

API Security Architect from API Academy

Developer Security Champion: API Security from Pluralsight by Gavin Johnson-Lynn

OAuth 2.0 and OpenID Connect (OIDC) (2)
Introduction to OAuth 2.0 and OpenID Connect from Pragmatic Web Security by Dr. Philippe De Ryck

OAuth2 and OpenID Connect: Easy Now from Pluralsight by Roland Guijt

Programming (1)
Rest API (Intermediate) from HackerRank

