About

x402 protocol implementation using EIP-2612 Permit signatures for gasless token transfers on BNB Chain. Payment authorization through cryptographic signatures, executed by a facilitator service.

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API Endpoints

GET /peng
▼

Browser access shows paywall interface (1 USD1 → 5000 PENG!). API access returns 402 Payment Required.

API Request

curl http://localhost:4024/peng

Response (402 Payment Required)

{
  "x402Version": 1,
  "accepts": [
    {
      "scheme": "exact",
      "network": "bsc",
      "maxAmountRequired": "1000000000000000000",
      "asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
      "payTo": "0x..."
    }
  ]
}
POST /peng
▼

Access PENG allocation (5000 PENG!) with 1 USD1 payment via X-PAYMENT header.

Example Request

curl -X POST \
  -H "X-PAYMENT: <base64-encoded-payload>" \
  http://localhost:4024/peng
GET /PENG!
▼

Browser access shows paywall interface (5 USD1 → 20000 PENG!). API access returns 402 Payment Required.

API Request

curl http://localhost:4024/PENG!

Response (402 Payment Required)

{
  "x402Version": 1,
  "accepts": [
    {
      "scheme": "exact",
      "network": "bsc",
      "maxAmountRequired": "5000000000000000000",
      "asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
      "payTo": "0x..."
    }
  ]
}
POST /PENG!
▼

Access PENG allocation (20000 PENG!) with 5 USD1 payment via X-PAYMENT header.

Example Request

curl -X POST \
  -H "X-PAYMENT: <base64-encoded-payload>" \
  http://localhost:4024/PENG!