Official Valve Web API key
Issued at steamcommunity.com/dev/apikey for Valve's supported Web API methods and tied to the rules and limits of the official Steam developer service.
Understand the two credentials, where to find each one, which integration needs which key — and how to make your first authenticated request.
Valve and Steamwebapi issue separate credentials for different services. They are not interchangeable.
Issued at steamcommunity.com/dev/apikey for Valve's supported Web API methods and tied to the rules and limits of the official Steam developer service.
Generated in your Steamwebapi dashboard and used for documented inventory, item, profile, market and CS2 endpoints.
Follow the endpoint documentation and send the correct key through the documented authentication header. Never expose production keys in browser code.
Generate your key, open the endpoint reference and validate the response shape before integrating it into production.
Read the API documentation