curl https://api.sw4p.io/sdk/v1/pairs \
  -H "X-API-Key: sk_..."

{
  "pairs": [
    { "from": "BASE", "to": "SOLANA", "enabled": true },
    { "from": "BASE", "to": "ETH", "enabled": true },
    { "from": "SOLANA", "to": "BASE", "enabled": true }
  ]
}