- **🚨 Terms of Service Risk**: Using this project may violate the terms of service of Anthropic and other upstream providers. Please review the relevant providers' user agreements before use; all risks arising from such use are borne solely by the user.
- **⚖️ Compliant Use**: Use this project only in compliance with the laws and regulations of your country or region. Any unlawful use is strictly prohibited.
- **📖 Disclaimer**: This project is provided for technical learning and research purposes only. The authors assume no liability for account bans, service interruptions, data loss, or any other direct or indirect damages resulting from the use of this project.
- **🚫 No Commercial Authorization**: The developers of this project have never authorized any individual or organization to conduct any form of commercial operation based on this project. Any commercial activity conducted in the name of or based on this project is unrelated to this project and its developers, and all resulting disputes, losses, and legal liabilities shall be borne solely by the party conducting such activity.
<td>Thanks to CCTK.AI for sponsoring this project! <a href="https://cctk.ai/register?aff=SUB2API">CCTK.AI</a> is an AI API gateway focused on stability and cost-effectiveness, offering fast relay services for Claude, OpenAI, Gemini, and other popular models. It works seamlessly with Claude Code, Codex, and other mainstream coding tools, delivering the same model capabilities at a fraction of the official cost. Register via <a href="https://cctk.ai/register?aff=SUB2API">this link</a> for faster, more stable, and more affordable AI API access.</td>
<td>One API, every top model! <a href="https://www.openmodel.ai?ref=sub2api">OpenModel</a> is a production-grade, high-availability AI API gateway that makes your applications truly fast and stable: automatic failover, smart routing to the best-performing channel, and a production-grade SLA. An SLA that far surpasses any single provider — making stability your core competitive advantage. Works directly with Claude Code, Codex, and Gemini CLI. Register via this link to get started.</td>
<td>Thanks to ETok.ai for sponsoring this project! ETok.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://etok.ai">here</a> to register!</td>
<td>Thanks to APIKEY.FUN for sponsoring this project! <a href="https://apikey.fan/register?aff=SUB2API">APIKEY.FUN</a> is one of the core contributors to the sub2api open-source project, dedicated to providing open, stable, and cost-effective AI API access. The platform supports API relay services for Claude, OpenAI, Gemini, and other popular models, with pricing starting from as low as 7% of the original rate. Register via the exclusive link: <a href="https://apikey.fan/register?aff=SUB2API">APIKEY</a> to enjoy up to 5% off on all recharges.</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>
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<td>Thanks to PatewayAI for sponsoring this project! <a href="https://pateway.ai/?ch=1tsfr51">PatewayAI</a> is a premium API relay built for heavy AI developers, offering the full Claude and Codex series sourced 100% from official providers, with transparent token-level billing. Enterprise plans include high concurrency, dedicated management, contracts, and invoicing. Register now to get $3 in trial credits, top-ups from 60% off, and referral bonuses up to $150.</td>
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<td><a href="https://nagora.ai/">Nagora</a> is a multi-model AI API gateway built for developers and teams. With a single account and API key, you can access more than 26 leading text and image models through one unified interface. It is compatible with OpenAI, Anthropic, and Gemini protocols and integrates seamlessly with development tools such as Claude Code, Codex, and Gemini CLI. The platform provides intelligent routing, automatic failover, transparent pricing, and consolidated billing, along with budget management, rate limiting, and concurrency controls. This makes AI usage more reliable and manageable across individual development, team collaboration, and production environments. No changes to your existing application are required. Simply replace the Base URL and API key to complete the integration in as little as one minute.</td>
<td>Thanks to Qiniu AI for sponsoring this project! Qiniu AI is the enterprise-grade large-model MaaS platform under Qiniu Cloud (02567.HK), offering one-stop access to 150+ mainstream models worldwide, compatible with the protocols of major global model providers, and covering full-modality capabilities including text, image, audio, video, and file processing, serving over 1.69 million enterprises and developers. Qiniu AI offers an exclusive benefit for Sub2API users: register via <a href="https://s.qiniu.com/u6rQrq">this link</a> — enterprise users get 12 million tokens free, and developers get 3 million tokens free.</td>
<td>Thanks to FennoAI for sponsoring this project! FennoAI is a high-stability, high-performance API relay provider for enterprise R&D teams and developers, compatible with the OpenAI and Anthropic protocols and seamlessly integrating with mainstream AI coding tools such as Codex, Claude Code, and OpenCode. The platform delivers enterprise-grade stability, supporting call volumes of 100 billion tokens per day, and supports business-to-business settlement and invoicing for both domestic and overseas entities to meet enterprise R&D and procurement needs. As an exclusive benefit for Sub2API users, purchase a subscription via the <a href="https://api.fenno.ai/s/dC4k">exclusive link</a> to get $50 worth of Coding Plan credit for only $1.99. Referral rewards are also available: invite friends to purchase and earn up to 20% commission — the more you invite, the more you earn.</td>
<td>Thank you to LanoX AI for sponsoring this project! <a href="https://lanox.ai/?c=6">LanoX AI</a> provides stable, cost-effective global model access services for developers, teams, and enterprises. 🎁 New User Benefits — Claim millions of free tokens, plus 500+ free models for easier low-cost testing, validation, and deployment 🧠 Global Leading Models — GPT · Claude · Gemini · Qwen · Grok... 🎬 Multimodal Creation — Seedance 2.0 · GPT Image · Gemini Nano Banana 🛡️ Enterprise-Grade Reliability — High availability 💎 native capability output 💎 no intelligence degradation 💎 no model mixing 💎 transparent usage and billing 💎 💰 Lower API Costs — Top-tier models from as low as 10% of official pricing, with clear documentation, simple integration, invoicing support, and enterprise-scale batch usage 🏢 Enterprise Choice — Ideal for AI products, Agents, content platforms, and R&D teams with high-volume model usage</td>
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<td><a href="https://hao.ai">hao.ai</a> is a high-speed, stable unified large-model API gateway for developers and teams. With a single API Key and a unified interface, you can access mainstream models such as GPT, Claude, and xAI Grok, with compatibility for common protocols and SDKs including OpenAI and Anthropic. The platform provides model routing, failover, team management, and complete request logs, with model prices as low as 15% of official reference pricing, helping users build AI applications more simply, more reliably, and at lower cost.</td>
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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
- **Composite Groups** - Admin routing layer that resolves requested models to concrete providers for multi-provider groups ([Operator Guide](docs/COMPOSITE_GROUPS.md))
| ~~[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 |
Apple-silicon Macs running macOS 26 can run the full Sub2API, PostgreSQL, and Redis stack with Apple `container` 1.1.0 or newer:
```bash
git clone https://github.com/Wei-Shaw/sub2api.git
cd sub2api/deploy
./apple-container.sh init
./apple-container.sh up
./apple-container.sh status
```
This is an operator-managed local workflow; Docker Compose remains the recommended production path. See [deploy/APPLE_CONTAINER.md](deploy/APPLE_CONTAINER.md) for lifecycle commands, persistence, upgrades, and runtime limitations.
-`security.trust_forwarded_ip_for_api_key_acl` enables legacy raw forwarded-header takeover (enabled by default for upgrade compatibility); disable it to enforce `server.trusted_proxies`, which should contain only the exact proxy CIDRs that connect directly to Sub2API
-`security.forwarded_client_ip_headers` configures up to 16 third-party CDN client-IP header names; they are checked in order before the built-in headers only while legacy takeover is enabled
Header names are validated, canonicalized, and de-duplicated. The admin security settings can update the list without a restart; new installations persist YAML/environment defaults and existing installations backfill a missing database value. When legacy takeover is disabled, all custom and built-in raw forwarding headers are ignored and Gin uses only `server.trusted_proxies`. While takeover is enabled, firewall the origin to CDN/proxy addresses and make the edge overwrite every trusted client-IP header. See [`deploy/EDGE_SECURITY.md`](deploy/EDGE_SECURITY.md) for the complete migration and trust-boundary rules.
When `security.url_allowlist.enabled=false`, the system performs minimal URL validation and **allows HTTP URLs by default** (dev-friendly mode; Docker Compose deployments use the same default). For production, explicitly tighten this to HTTPS-only:
The initial admin account is **only created via the setup wizard** (served at `http://<host>:8080` on first run). The `default.admin_email` / `default.admin_password` fields in `config.yaml` are **not used** to create it — they exist in the template for historical reasons.
Because step 5 above pre-creates `config.yaml`, the setup wizard will be **skipped on first run**: the server detects an existing config and boots straight into normal mode with an empty `users` table, so the first login attempt fails with `invalid email or password`.
**Two ways to create the admin account:**
1.**Recommended — let the wizard generate `config.yaml`:** Skip step 5 (do not run the `cp`). Start `./sub2api` directly; the setup wizard at `http://localhost:8080` walks you through database, Redis, and admin account setup, then writes `config.yaml` for you.
2.**If you already created `config.yaml`:** Temporarily move it aside so the wizard can trigger on first run, then restore it afterwards:
```bash
mv config.yaml config.yaml.bak
./sub2api # wizard runs at http://localhost:8080 and writes a fresh config.yaml
# stop the server (Ctrl+C) once the wizard completes, then restore your config:
mv config.yaml.bak config.yaml
./sub2api # restart in normal mode and log in with the admin you just created
- Default groups are seeded on each startup. Set `SIMPLE_MODE_AUTO_CREATE_DEFAULT_GROUPS=false` (or YAML `simple_mode.auto_create_default_groups: false`) to manage groups yourself. The default is `true`; disabling it does not delete existing groups or change runtime auto-binding or admin concurrency setup.
- Optional key windows: Set `SIMPLE_MODE_KEY_RATE_LIMIT_ENABLED=true` to enforce each API key's configured 5-hour, daily, and 7-day spending windows. The default is `false`; balance and subscription debit remain bypassed when enabled.
- Window enforcement uses the database as its source of truth and records only API-key window usage. It is a post-request soft cap, so concurrent in-flight requests can overshoot by their final costs. Historical simple-mode usage is not backfilled.
Long-running OpenAI/Grok image generation and editing can be submitted through `/v1/images/generations/async` or `/v1/images/edits/async`, then polled at `/v1/images/tasks/{task_id}` without holding a CDN connection open. See [Asynchronous Image Tasks](docs/ASYNC_IMAGE_TASKS.md) for request and response examples.
Sub2API supports both Grok subscription accounts through xAI OAuth and standard xAI API-key accounts. Both account types forward OpenAI-compatible Responses traffic to xAI.
- Public Responses targets: `/v1/responses`, `/responses`, and `/backend-api/codex/responses`, forwarded to the Grok subscription proxy for OAuth accounts or `https://api.x.ai/v1/responses` for API-key accounts
- Media targets for Grok groups: `/v1/images/generations`, `/images/generations`, `/v1/images/edits`, `/images/edits`, `/v1/videos/generations`, `/videos/generations`, `/v1/videos/edits`, `/videos/edits`, `/v1/videos/extensions`, `/videos/extensions`, `/v1/videos/{request_id}`, and `/videos/{request_id}`. Generation, editing, and extension requests require the group image-generation permission.
- JSON image-edit and video-generation requests accept image references in `image`, `images`, `reference_images`, and `mask` objects. Use `url` for xAI-compatible payloads; the legacy `image_url` field remains accepted and is normalized to `url` before forwarding.
The Grok OAuth flow uses PKCE and does not require committing private secrets. The default client details follow the public xAI OAuth flow used by compatible clients, and every value can be overridden by environment variable:
| Variable | Default |
|----------|---------|
| `XAI_OAUTH_CLIENT_ID` | Public xAI OAuth client ID |
| `XAI_GROK_CLI_VERSION` | `0.2.114`; optional override for the client identity sent to `cli-chat-proxy.grok.com`. The pinned value is also the floor: an override below it is dropped |
Administrators can create Grok OAuth or API-key accounts from the dashboard. OAuth authorization and reauthorization are also available through the admin API:
OAuth credential storage reuses the existing account JSON fields: `access_token`, `refresh_token`, `token_type`, `expires_at`, `base_url`, optional `email`, optional `subscription_tier`, and `entitlement_status`. OAuth inference defaults to `https://cli-chat-proxy.grok.com/v1`; existing OAuth accounts that stored the old `https://api.x.ai/v1` default are redirected to the subscription proxy at runtime. Explicit custom upstreams remain unchanged.
For API-key accounts, select **Grok → API Key** in the create-account dialog. The official base URL defaults to `https://api.x.ai/v1`; credentials use the existing `base_url` and `api_key` account fields. OAuth accounts continue to use the subscription flow above.
2. Create a Grok group, attach the account to it, then create a Sub2API API key assigned to that group.
3. In the user API-key page, click **Use Key** and select **Grok CLI**. The modal generates the correct file and base URL for macOS/Linux or Windows. It also provides an OpenCode configuration on the **OpenCode** tab.
4. If configuring manually, save the following as `~/.grok/config.toml` (Windows: `%USERPROFILE%\.grok\config.toml`):
Back up an existing `config.toml` before merging the entry. The file contains a Sub2API API key, so keep it private and restrict its permissions where supported. Verify the effective configuration and make a smoke request:
xAI quota is passive. Sub2API does not invent subscription quota values; it records whitelisted xAI rate-limit headers from successful or rate-limited upstream responses when xAI sends them. Before the first usable upstream response, the dashboard shows quota as unknown and still displays local Sub2API usage stats.
`401` responses temporarily remove accounts with invalid credentials from scheduling. `403` responses are treated as access or entitlement failures instead of token-refresh loops. `429` responses use `Retry-After` or a short cooldown to temporarily remove the account from scheduling.
New Grok image and video generation requests use a media-specific eligibility check. API-key accounts remain eligible. OAuth accounts with explicit Free or forbidden billing evidence are excluded from new media generation. Missing or malformed observations are probed before dispatch; a successful but incomplete billing response is treated as `billing_inconclusive` and remains eligible for backwards compatibility, because an unknown billing schema is not proof that the account lacks media entitlement. Operators can quarantine a known-bad account with `extra.grok_media_eligible=false` or force-enable a verified account with `true`. Imports run the billing-first quota probe proactively. Chat requests and video status lookups are not affected by this media-only quarantine. If no eligible account remains, the media endpoint returns HTTP `503` with error type `grok_media_no_eligible_account`.
Administrators can override automatic media eligibility through the account create/update API by setting `extra.grok_media_eligible` to `false` (exclude) or `true` (force eligible). On update, set it to `null` to remove the override and return to automatic probe-based behavior; omitting the field preserves the current override. A weekly allowance period alone is not treated as a paid tier signal. Successful image responses must contain at least one actual image output; empty HTTP `200` responses trigger account failover instead of being counted and returned as successful generations.
Sub2API supports TypeSafe API-key accounts through Jev's native, non-streaming System One protocol.
- Platform: `typesafe`; account type: API Key
- Default upstream: `https://api.typesafe.ai`
- Public endpoint: `POST /v1/systemone`
- Model: `jev-latest`, also returned by `/v1/models` for TypeSafe groups
- Questions: `noul`, `choice`, and `score`
Requests and successful responses retain the native System One JSON structure. This endpoint is not compatible with Chat Completions, Responses, Anthropic Messages, or streaming clients.
Question validation follows the TypeSafe OpenAPI wire schema (also used by SDK v0.5.7). `instructions` may be omitted or `null` for all question types. Noul `criteria` may be omitted or `null`; its `true`/`false` descriptions and Choice descriptions accept strings, objects, arrays, or `null`. Score `criteria` must be a non-empty array of string, object, or array descriptions; a single level is valid. SDK integer-keyed Score maps are normalized to arrays by the SDK before sending.
The built-in `jev-latest` price is `$0.042` per million input tokens and `$0` for output tokens. Channel pricing can override both values. Credential, billing, permission, rate-limit, overload, server, and network failures (`401`, `402`, `403`, `429`, `529`, `5xx`, transport errors) use the existing account error policy (including custom error codes and temporary-unschedulable rules) and fail over to another account; request errors (`400`, `413`, and `422`) are returned without retrying another account and never change account state. TypeSafe groups (and Composite requests routed to TypeSafe) reject Messages, Chat Completions, Responses, and count_tokens requests with `404`.
Antigravity accounts support optional **hybrid scheduling**. When enabled, the general endpoints `/v1/messages` and `/v1beta/` will also route requests to Antigravity accounts.
> **⚠️ Warning**: Anthropic Claude and Antigravity Claude **cannot be mixed within the same conversation context**. Use groups to isolate them properly.
