Your AI Subscriptions, Now With a Cash Register

What it does

Sub2API is a self-hosted gateway that sits between users and upstream AI services like Claude, OpenAI, and Gemini. It pools multiple subscription accounts, distributes platform-generated API keys to end users, and handles authentication, load balancing, and token-level billing. Think of it as a turnstile and cash register for shared AI access.

The interesting bit

What sets it apart from a simple proxy is the built-in commerce layer: it includes native payment integration for Stripe, Alipay, WeChat Pay, and EasyPay, plus an admin dashboard for monitoring. The project’s own sponsor list reads like a directory of live commercial resellers already running on the code, which is perhaps the strongest proof of concept.

Key highlights

• Token-level usage tracking and cost calculation for precise billing.
• Smart scheduling with sticky sessions across multiple upstream accounts (OAuth and API Key).
• Built-in payment system for user self-service top-up without a separate billing service.
• Concurrency and rate-limiting controls per user and per upstream account.
• Admin dashboard extensible via iframe to embed external tools like ticketing systems.

Caveats

• The README is largely dominated by sponsor advertisements, and the truncated excerpt leaves unclear how deep the technical documentation goes.
• The project warns that only sub2api.org and pincc.ai are official domains, suggesting a busy ecosystem of third-party deployments to navigate.
• Demo credentials are hardcoded in the documentation (admin@sub2api.org / admin123), which is convenient but not a security model to emulate.

Verdict

Worth a look if you need to monetize or meter shared access to AI subscriptions. If you just want a personal API proxy, this is over-engineered and comes with a side of e-commerce.