curl --request GET \
  --url https://facilitator.agentokratia.com/api/supported

{
  "kinds": [
    {
      "x402Version": 2,
      "scheme": "exact",
      "network": "eip155:8453",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      }
    },
    {
      "x402Version": 2,
      "scheme": "escrow",
      "network": "eip155:8453",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "facilitator": "0x...",
        "escrowContract": "0x...",
        "tokenCollector": "0x...",
        "minDeposit": "5000000",
        "maxDeposit": "100000000"
      }
    }
  ],
  "extensions": [
    "agentokratia"
  ],
  "signers": {
    "eip155:8453": [
      "0x..."
    ]
  }
}