npm install -g opencode-ai

~/.config/opencode/opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "anthropic": {
      "options": {
        "baseURL": "https://xh.v1api.cc/v1"
      }
    }
  }
}

~/.local/share/opencode/auth.json

{
  "google": {
    "type": "api",
    "key": "1111111111111111111"
  },
  "anthropic": {
    "type": "api",
    "key": "sk-xxxxxxxxxxxxx"
  }
}