Sub2API
Sub2API-CRS2 is a one-stop open source transit service
...It allows users to create platform-issued API keys while routing requests to upstream AI services behind the scenes. The platform handles authentication, quota allocation, billing logic, load balancing, and request forwarding, making it useful for shared or team-based access management. It is designed to unify access to services such as Claude, OpenAI, Gemini, and related AI tools through a centralized relay layer. Sub2API supports deployment through Docker Compose or binary installation for Linux servers. Its main value is turning multiple subscription-based AI accounts into a managed API access platform with administrative controls.