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Codex CLI
OpenAIAI Coding Agent
Codex CLI is OpenAI's command-line AI coding tool. Since UnionToken is fully OpenAI-compatible, you can connect seamlessly.
Why use UnionToken?
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Multi-model Routing
Automatically select optimal model, reduce costs
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Failover
Auto-switch when primary model unavailable
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Cost Optimization
Smart routing saves up to 40% in costs
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China Direct
Fast access from China nodes
1. Install Codex CLI
Codex CLI is OpenAI's command-line AI coding tool.
UnionToken API Key — Get it from registration, no OpenAI subscription required → Get Started
npm install -g @openai/codex
2. Set Environment Variables
Codex CLI uses OpenAI protocol, configure via environment variables:
# ~/.zshrc
export OPENAI_API_KEY=<YOUR_UNIONTOKEN_API_KEY>
export OPENAI_BASE_URL=https://api.uniontoken.ai/v1
source ~/.zshrc
💡 Get your API Key from Merchant Console
3. Verify Configuration
codex "Create a Hello World Python script"