https://facilitator.shadowfeed.app

curl https://facilitator.shadowfeed.app/supported

{
  "x402Version": 2,
  "kinds": [
    {
      "scheme": "exact",
      "network": "stacks:1",
      "asset": "STX"
    },
    {
      "scheme": "exact",
      "network": "stacks:2147483648",
      "asset": "STX"
    }
  ]
}

curl -X POST https://facilitator.shadowfeed.app/verify \
  -H "Content-Type: application/json" \
  -d '{
    "paymentPayload": { "payload": { "transaction": "hex..." } },
    "paymentRequirements": { "amount": "5000", "payTo": "SP1DV..." }
  }'

{
  "valid": true,
  "payer": "SP2PBB...",
  "invalidReason": null
}

curl -X POST https://facilitator.shadowfeed.app/settle \
  -H "Content-Type: application/json" \
  -d '{
    "paymentPayload": { "payload": { "transaction": "hex..." } },
    "paymentRequirements": { "amount": "5000", "payTo": "SP1DV..." }
  }'

{
  "success": true,
  "payer": "SP2PBB...",
  "transaction": "0xabc123...",
  "network": "stacks:1"
}