sub2api

# Sub2API

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<a href="https://trendshift.io/repositories/21823" target="_blank"><img src="https://trendshift.io/api/badge/repositories/21823" alt="Wei-Shaw%2Fsub2api | Trendshift" width="250" height="55"/></a>

**AI API Gateway Platform for Subscription Quota Distribution**

English | [中文](README_CN.md) | [日本語](README_JA.md)

</div>

> **Sub2API officially uses only the domains `sub2api.org` and `pincc.ai`. Other websites using the Sub2API name may be third-party deployments or services and are not affiliated with this project. Please verify and exercise your own judgment.**

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## Demo

Try Sub2API online: **[https://demo.sub2api.org/](https://demo.sub2api.org/)**

Demo credentials (shared demo environment; **not** created automatically for self-hosted installs):

| Email | Password |
|-------|----------|
| admin@sub2api.org | admin123 |

## Overview

Sub2API is an AI API gateway platform designed to distribute and manage API quotas from AI product subscriptions. Users can access upstream AI services through platform-generated API Keys, while the platform handles authentication, billing, load balancing, and request forwarding.

## Features

- **Multi-Account Management** - Support multiple upstream account types (OAuth, API Key)
- **API Key Distribution** - Generate and manage API Keys for users
- **Precise Billing** - Token-level usage tracking and cost calculation
- **Smart Scheduling** - Intelligent account selection with sticky sessions
- **Concurrency Control** - Per-user and per-account concurrency limits
- **Rate Limiting** - Configurable request and token rate limits
- **Built-in Payment System** - Supports EasyPay, Alipay, WeChat Pay, and Stripe for user self-service top-up, no separate payment service needed ([Configuration Guide](docs/PAYMENT.md))
- **Admin Dashboard** - Web interface for monitoring and management
- **External System Integration** - Embed external systems (e.g. ticketing) via iframe to extend the admin dashboard

## ❤️ Sponsors

> [Want to appear here?](mailto:support@pincc.ai)

<table>
<tr>
<td width="180" align="center" valign="middle"><a href="https://shop.pincc.ai/"><img src="assets/partners/logos/pincc-logo.png" alt="pincc" width="150"></a></td>
<td valign="middle"><b><a href="https://shop.pincc.ai/">PinCC</a></b> is the official relay service built on Sub2API, offering stable access to Claude Code, Codex, Gemini and other popular models — ready to use, no deployment or maintenance required.</td>
</tr>

<tr>
<td width="180"><a href="https://www.packyapi.com/register?aff=sub2api"><img src="assets/partners/logos/packycode.png" alt="PackyCode" width="150"></a></td>
<td>Thanks to PackyCode for sponsoring this project! PackyCode is a reliable and efficient API relay service provider, offering relay services for Claude Code, Codex, Gemini, and more. PackyCode provides special discounts for our software users: register using <a href="https://www.packyapi.com/register?aff=sub2api">this link</a> and enter the "sub2api" promo code during first recharge to get 10% off.</td>
</tr>

<tr>
<td width="180"><a href="https://poixe.com/i/sub2api"><img src="assets/partners/logos/poixe.png" alt="PoixeAi" width="150"></a></td>
<td>Thanks to Poixe Ai for sponsoring this project! Poixe AI provides reliable LLM API services. You can leverage the platform's API endpoints to seamlessly build AI-powered products. Additionally, you can become a vendor by providing AI API resources to the platform and earn revenue. Register through the exclusive <a href="https://poixe.com/i/sub2api">sub2api</a> referral link and receive a bonus of $5 USD on your first top-up.</td>
</tr>

<tr>
<td width="180"><a href="https://ctok.ai"><img src="assets/partners/logos/ctok.png" alt="CTok" width="150"></a></td>
<td>Thanks to CTok.ai for sponsoring this project! CTok.ai is dedicated to building a one-stop AI programming tool service platform. We offer professional Claude Code packages and technical community services, with support for Google Gemini and OpenAI Codex. Through carefully designed plans and a professional tech community, we provide developers with reliable service guarantees and continuous technical support, making AI-assisted programming a true productivity tool. Click <a href="https://ctok.ai">here</a> to register!</td>
</tr>

<tr>
<td width="180"><a href="https://code.silkapi.com/"><img src="assets/partners/logos/silkapi.png" alt="silkapi" width="150"></a></td>
<td>Thanks to SilkAPI for sponsoring this project! <a href="https://code.silkapi.com/">SilkAPI</a> is a relay service built on Sub2API, specializing in providing high-speed and stable Codex API relay.</td>
</tr>

<tr>
<td width="180"><a href="https://ylscode.com/"><img src="assets/partners/logos/ylscode.png" alt="ylscode" width="150"></a></td>
<td>Thanks to YLS Code for sponsoring this project! <a href="https://ylscode.com/">YLS Code</a> is dedicated to building secure enterprise-grade Coding Agent productivity services, offering stable and fast Codex / Claude / Gemini subscription services along with pay-as-you-go API options for flexible choices. Register now for a limited-time 3-day Codex trial bonus!</td>
</tr>

<tr>
<td width="180"><a href="https://www.aicodemirror.com/register?invitecode=KMVZQM"><img src="assets/partners/logos/AICodeMirror.jpg" alt="AICodeMirror" width="150"></a></td>
<td>Thanks to AICodeMirror for sponsoring this project! AICodeMirror provides official high-stability relay services for Claude Code / Codex / Gemini CLI, with enterprise-grade concurrency, fast invoicing, and 24/7 dedicated technical support. Claude Code / Codex / Gemini official channels at 38% / 2% / 9% of original price, with extra discounts on top-ups! AICodeMirror offers special benefits for sub2api users: register via <a href="https://www.aicodemirror.com/register?invitecode=KMVZQM">this link</a> to enjoy 20% off your first top-up, and enterprise customers can get up to 25% off!</td>
</tr>

<tr>
<td width="180"><a href="https://aigocode.com/invite/SUB2API"><img src="assets/partners/logos/aigocode.png" alt="AIGoCode" width="150"></a></td>
<td>Thanks to AIGoCode for sponsoring this project! AIGoCode is an all-in-one platform that integrates Claude Code, Codex, and the latest Gemini models, providing you with stable, efficient, and highly cost-effective AI coding services. The platform offers flexible subscription plans, zero risk of account suspension, direct access with no VPN required, and lightning-fast responses. AIGoCode has prepared a special benefit for sub2api users: if you register via <a href="https://aigocode.com/invite/SUB2API">this link</a>, you'll receive an extra 10% bonus credit on your first top-up!</td>
</tr>

<tr>
<td width="180"><a href="https://shop.bmoplus.com/?utm_source=github"><img src="assets/partners/logos/bmoplus.jpg" alt="bmoplus" width="150"></a></td>
<td>Huge thanks to BmoPlus for sponsoring this project! BmoPlus is a highly reliable AI account provider built strictly for heavy AI users and developers. They offer rock-solid, ready-to-use accounts and official top-up services for ChatGPT Plus / ChatGPT Pro (Full Warranty) / Claude Pro / Super Grok / Gemini Pro. By registering and ordering through <a href="https://shop.bmoplus.com/?utm_source=github">BmoPlus - Premium AI Accounts & Top-ups</a>, users can unlock the mind-blowing rate of 10% of the official GPT subscription price (90% OFF)</td>
</tr>

<tr>
<td width="180"><a href="https://bestproxy.com/?keyword=a2e8iuol"><img src="assets/partners/logos/bestproxy.png" alt="bestproxy" width="150"></a></td>
<td>Thanks to Bestproxy for sponsoring this project! <a href="https://bestproxy.com/?keyword=a2e8iuol">Bestproxy</a> provides high-purity residential IPs with dedicated one-IP-per-account support. By combining real home networks with fingerprint isolation, it enables link environment isolation and reduces the probability of association-based risk control.</td>
</tr>

</table>

## Ecosystem

Community projects that extend or integrate with Sub2API:

| Project | Description | Features |
|---------|-------------|----------|
| ~~[Sub2ApiPay](https://github.com/touwaeriol/sub2apipay)~~ | ~~Self-service payment system~~ | **Now Built-in** — Payment is now integrated into Sub2API, no separate deployment needed. See [Payment Configuration Guide](docs/PAYMENT.md) |
| [sub2api-mobile](https://github.com/ckken/sub2api-mobile) | Mobile admin console | Cross-platform app (iOS/Android/Web) for user management, account management, monitoring dashboard, and multi-backend switching; built with Expo + React Native |

## Tech Stack

| Component | Technology |
|-----------|------------|
| Backend | Go 1.25.7, Gin, Ent |
| Frontend | Vue 3.4+, Vite 5+, TailwindCSS |
| Database | PostgreSQL 15+ |
| Cache/Queue | Redis 7+ |

---

## Nginx Reverse Proxy Note

When using Nginx as a reverse proxy for Sub2API (or CRS) with Codex CLI, add the following to the `http` block in your Nginx configuration:

```nginx
underscores_in_headers on;
```

Nginx drops headers containing underscores by default (e.g. `session_id`), which breaks sticky session routing in multi-account setups.

---

## Deployment

### Method 1: Script Installation (Recommended)

One-click installation script that downloads pre-built binaries from GitHub Releases.

#### Prerequisites

- Linux server (amd64 or arm64)
- PostgreSQL 15+ (installed and running)
- Redis 7+ (installed and running)
- Root privileges

#### Installation Steps

```bash
curl -sSL https://raw.githubusercontent.com/Wei-Shaw/sub2api/main