YYLX
YYLX is an API relay service for developers and AI tool users. With a single API Key and compatible endpoints, you can bring model capabilities into Claude Code, Claude Desktop, Codex, Cursor, Cherry Studio, and other everyday tools — ideal if you want to reuse one set of model resources across multiple AI clients, coding tools, or automation workflows.
[!TIP] Create a separate API Key for each client. This makes it easy to track usage per tool, and to disable a single Key if one tool's configuration ever leaks.
Who it's for
| User | Typical needs |
|---|---|
| Developers | Connect models in Codex, Claude Code, Claude Desktop, Cursor, and similar tools |
| AI tool users | Manage models in clients like Cherry Studio from one place |
| Small teams | Provide members with shared Keys, quotas, and a single model entry point |
| Ops users | Monitor availability, balance, rate multipliers, and request errors |
Quick start
- Create an API Key in the yylx.io console.
- Pick the client or tool you want to use.
- Fill in the Base URL, API Key, and model name as described on the matching page.
- Send a test request to confirm the configuration works.
Key information
yylx.io is built around compatible endpoints. Most tools that support OpenAI-compatible APIs only need the following:
| Item | Details |
|---|---|
| OpenAI-compatible endpoint | https://app.yylx.io/v1 |
| Anthropic-compatible endpoint | https://app.yylx.io/v1/messages |
| API Key | Created in the console, per platform; the exact format follows what the console shows (e.g. sk-...) |
| Model | A model name from the console's model list |
| Model list | https://app.yylx.io/model/pricing |
| Service status | Check console announcements or the status page |
Recommended: import configs with CC Switch
CC Switch is a cross-platform configuration manager for AI CLI tools. It centrally manages model provider settings for Claude Code, Codex, Gemini CLI, OpenCode, and more — keeping Base URLs, API Keys, and model names in one place so you can switch between tools and providers with one click, instead of editing environment variables or config files by hand.
See Use with CC Switch for download, one-click import, and manual setup steps.
Suggested reading order
If this is your first time here, read in this order:
- Create an API Key
- Access Overview
- The setup page for your client