Api Endpoint

Token allowance check, Arc

Allowance check on Arc, before an app asks for an approval: what owner has already approved to spender for a token (default USDC; add &token=0x... for another), in tokens and USD, whether it is unlimited, the owner's balance, whether the spender is a contract and its name if it is one our own code uses on Arc (Uniswap v4 PoolManager, UniversalRouter, Permit2, Circle Gateway Wallet, CCTP TokenMessenger, the launchpad router; never guessed), and risk signals (unlimited to an unknown contract, an…

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Offering

Provider: apexfaucet.xyz
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: General Utilities
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://apexfaucet.xyz/api/x402/arc-allowance
MIME type: application/json
First seen: 2026-10-16T01:54:06.400Z
Last seen: 2026-11-04T13:29:23.987Z
Tags: allowance, approval check, ERC20, arc, USDC

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2: 1000 atomic units
Atomic price: 1000 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact
Payment option 3: 1000 atomic units
Atomic price: 1000 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact
Payment option 4: 0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 5: 0.001 USDC
Atomic price: 1000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Payment option 6: 10000000000000000 atomic units
Atomic price: 10000000000000000 · Network: eip155:56 · Asset: 0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d · Scheme: exact
Payment option 7: 10000000000000000 atomic units
Atomic price: 10000000000000000 · Network: eip155:56 · Asset: 0xcE24439F2D9C6a2289F741120FE202248B666666 · Scheme: exact
Payment option 8: 0.01 USDC
Atomic price: 10000 · Network: eip155:4663 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0xd334ab5151c624cada654854e2879903dc4217ed"
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "1000",
    "payTo": "0xd334ab5151c624cada654854e2879903dc4217ed"
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "1000",
    "payTo": "0xd334ab5151c624cada654854e2879903dc4217ed"
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0xd334ab5151c624cada654854e2879903dc4217ed"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "1000",
    "payTo": "HYiepS7mNCVVKoaDmZLQ6rNtMWHTQqKheM1NLGn1x8kJ"
  },
  {
    "scheme": "exact",
    "network": "eip155:56",
    "asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
    "amount": "10000000000000000",
    "payTo": "0xd334AB5151C624cAdA654854E2879903Dc4217eD"
  },
  {
    "scheme": "exact",
    "network": "eip155:56",
    "asset": "0xcE24439F2D9C6a2289F741120FE202248B666666",
    "amount": "10000000000000000",
    "payTo": "0xd334AB5151C624cAdA654854E2879903Dc4217eD"
  },
  {
    "scheme": "exact",
    "network": "eip155:4663",
    "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
    "amount": "10000",
    "payTo": "0xd334AB5151C624cAdA654854E2879903Dc4217eD"
  }
]

Observed health

Status: Healthy
Latest latency: 219 ms
Average latency: 619 ms
HTTP status: 402
Last checked: 2026-11-04T13:29:23.982Z
Reachability: 92.9% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "owner": {
          "type": "string",
          "pattern": "^0x[0-9a-fA-F]{40}$",
          "description": "The wallet that gave (or would give) the approval."
        },
        "spender": {
          "type": "string",
          "pattern": "^0x[0-9a-fA-F]{40}$",
          "description": "The contract or wallet allowed to spend."
        }
      },
      "required": [
        "owner",
        "spender"
      ]
    }
  },
  "required": [
    "type",
    "method",
    "queryParams"
  ]
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "input": {
      "type": "object",
      "properties": {
        "type": {
          "type": "string",
          "const": "http"
        },
        "method": {
          "type": "string",
          "enum": [
            "GET"
          ]
        },
        "queryParams": {
          "type": "object",
          "properties": {
            "owner": {
              "type": "string",
              "pattern": "^0x[0-9a-fA-F]{40}$",
              "description": "The wallet that gave (or would give) the approval."
            },
            "spender": {
              "type": "string",
              "pattern": "^0x[0-9a-fA-F]{40}$",
              "description": "The contract or wallet allowed to spend."
            }
          },
          "required": [
            "owner",
            "spender"
          ]
        }
      },
      "required": [
        "type",
        "method",
        "queryParams"
      ]
    },
    "output": {
      "type": "object"
    }
  },
  "required": [
    "input"
  ]
}