Before you pay USDC

Before you pay USDC: one signed verdict for the payee (poison lookalike, USDC blacklist, OFAC), a duplicate, our catalog price, and whether that call has been delivered. Not a permission to pay. Arc builders: https://apexfaucet.xyz/arc-builders/. Pay-safe: one EIP-712 PaySafeVerdict before you send USDC. Pass ?payee=<0x>.

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://apexfaucet.xyz/api/x402/pay-safe

Our checks, last 30 days

We never call tools that send, buy, move money or file anything, not even without paying.

Example input (from the provider)

{
  "discoverable": true,
  "method": "GET",
  "queryParams": {
    "amount": "0.01",
    "chain": "arc",
    "nonce": "0x0000000000000000000000000000000000000000000000000000000000000001",
    "payee": "0x3600000000000000000000000000000000000000",
    "payer": "0xd334AB5151C624cAdA654854E2879903Dc4217eD",
    "resource": "https://apexfaucet.xyz/api/x402/page-extract",
    "window": "600"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "amount": {
              "description": "USDC. A decimal like 0.01 is the amount. A bare integer is atomic units and is accepted only with resource and nonce.",
              "pattern": "^([0-9]{1,18}|[0-9]{1,12}\\.[0-9]{1,6})$",
              "type": "string"
            },
            "chain": {
              "description": "arc (default) or base. The signed networkId names this chain. The signature domain stays chainId 5042.",
              "pattern": "^(arc|base|eip155:5042|eip155:8453|5042|8453)$",
              "type": "string"
            },
            "nonce": {
              "description": "EIP-3009 nonce. Omit it and the duplicate half is NOT_CHECKED. A missing nonce cannot be a PASS.",
              "pattern": "^0x[0-9a-fA-F]{64}$",
              "type": "string"
            },
            "payee": {
              "description": "The 0x address you are about to pay.",
              "pattern": "^0x[0-9a-fA-F]{40}$",
              "type": "string"
            },
            "payer": {
              "description": "Optional: your paying wallet.",
              "pattern": "^0x[0-9a-fA-F]{40}$",
              "type": "string"
            },
            "resource": {
              "description": "Resource URL. Used for the catalog price and for whether that endpoint has delivered before. Required with nonce and amount for the duplicate half.",
              "pattern": "^https?:\\/\\/\\S+$",
              "type": "string"
            },
            "window": {
              "description": "Seconds for the duplicate half. Default 600. Clamped from 60 to 86400.",
              "pattern": "^[0-9]{1,5}$",
              "type": "string"
            }
          },
          "required": [
            "payee"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "queryParams"
      ],
      "type": "object"
    },
    "output": {
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

This page as JSON