three.ws Permit2 Demo

Permit2 + EIP-2612 Gas Sponsoring Demo — forces the gasless Permit2 path so a fresh wallet holding USDC but ZERO ETH can complete the flow. The CDP facilitator submits the EIP-2612 permit and the Permit2 transfer atomically in a single transaction via x402ExactPermit2Proxy.settleWithPermit. The response carries the on-chain tx hash + Basescan link so callers can confirm the permit + transfer landed together. Pay $0.001 USDC on Base mainnet.

Resource: three.ws/api/x402/permit2-paid-demo

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x4022de2d36c334e73c7a108805cea11c0564f402

Payment methods: permit2 · Last validation: 2026-09-14 16:32:35.602+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET",
          "HEAD",
          "DELETE"
        ],
        "type": "string"
      },
      "queryParams": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "additionalProperties": false
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "ok",
          "demo",
          "method",
          "payer",
          "network",
          "asset",
          "amountAtomics",
          "transaction",
          "explorer",
          "settledAt",
          "proxy"
        ],
        "properties": {
          "ok": {
            "type": "boolean",
            "const": true
          },
          "demo": {
            "type": "string",
            "const": "permit2-eip2612-gas-sponsoring"
          },
          "asset": {
            "type": "string"
          },
          "payer": {
            "type": [
              "string",
              "null"
            ]
          },
          "proxy": {
            "type": "string",
            "description": "Canonical x402ExactPermit2Proxy address that settled the EIP-2612 permit + Permit2 transfer atomically."
          },
          "method": {
            "type": "string",
            "const": "permit2"
          },
          "network": {
            "type": "string"
          },
          "explorer": {
            "type": "string",
            "format": "uri"
          },
          "settledAt": {
            "type": "string",
            "format": "date-time"
          },
          "transaction": {
            "type": "string"
          },
          "amountAtomics": {
            "type": "string"
          },
          "supportsEip2612": {
            "type": "boolean"
          }
        }
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "decimals": 6,
          "supportsEip2612": true,
          "assetTransferMethod": "permit2"
        },
        "payTo": "0x4022de2d36c334e73c7a108805cea11c0564f402",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "resource": "https://three.ws/api/x402/permit2-paid-demo",
        "maxTimeoutSeconds": 60
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x4022de2d36c334e73c7a108805cea11c0564f402",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "1000"
    }
  ]
}

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.