Nyxos APINyxos API Documentation
Official developer documentation and integration guides for the Nyxos API gateway.
Welcome to the Nyxos API documentation portal.
Nyxos API is a unified AI gateway giving you access to frontier AI models through a single API key, consolidated balance, and OpenAI / Anthropic-compatible endpoints at https://api.nyxos.shop.
Quick Navigation
Redeem Balance Code
Credit your account with a voucher purchased in the Nyxos Shop.
Create Your First API Key
Generate your sk-... token with the Auto-A automatic group and quota limits.
Base URL Rules & Endpoints
Prevent 404 errors by understanding when to use the root URL or /v1.
Live Model Catalog & Pricing
Browse the real-time model list, ratios, and groups on the /pricing page.
Troubleshooting
Fix common 401, 404 and 429 errors, quota issues and vision support questions.
Core Endpoints
| Resource | URL | Description |
|---|---|---|
| API Gateway | https://api.nyxos.shop | OpenAI-compatible (/v1/chat/completions, /v1/models) + Anthropic-native (/v1/messages) |
| Web Panel | https://api.nyxos.shop | Sign in, create tokens, redeem codes, check balance and usage |
| Live Pricing | https://api.nyxos.shop/pricing | Real-time model catalog with ratios and enabled groups |
| Nyxos Shop | https://nyxos.shop/store | Purchase API balance and vouchers |
Note: Nyxos also operates the extended PlusX catalog at
https://plusx.nyxos.shop— a separate service with its own panel and balance. This documentation covers the mainapi.nyxos.shopgateway; the same Base URL rules apply there.
Model Coverage
The exact, callable model IDs change constantly as providers release new versions. Always copy the exact ID from the live /pricing page or GET /v1/models — never from memory.
The gateway covers the frontier families — Anthropic Claude (agentic coding and reasoning), OpenAI GPT (general workflows, Codex-class programming), xAI Grok (fast, real-time knowledge) and more — routed through the automatic Auto-A group for the widest coverage and reliability.
Supported IDEs, CLIs & Applications
- Coding & IDE Agents: Claude Code, Cursor, Cline, Kilo Code & Roo Code, VS Code Extensions, OpenCode.
- Chat Applications: LobeChat, NextChat, Chatbox & others, Codex App, Claude Desktop.
- Command Line Interfaces: Claude CLI & Codex CLI.
- Official SDKs: Python, Node.js & cURL.