Index onlineMerchant portal
Api Endpoint

wallet-balance-checker

Read native coin and USDC balances for any EVM wallet on Base, Ethereum, Polygon, Arbitrum or Optimism, with atomic amounts and current block. No RPC key or account. Try GET /wallet-balance/sample.

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Offering

Provider
x402.agentindex.world
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Web Search Research
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://x402.agentindex.world/wallet-balance
MIME type
application/json
First seen
2026-10-16T03:09:13.682Z
Last seen
Tags
Wallet, balance, USDC, MCP, X402

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
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d"
  }
]

Observed health

Status
Reachable
Latest latency
304 ms
Average latency
1082 ms
HTTP status
405
Last checked
Reachability
100% over 15 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",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "address": {
          "type": "string",
          "description": "EVM wallet address (0x followed by 40 hexadecimal characters)."
        },
        "network": {
          "type": "string",
          "enum": [
            "base",
            "ethereum",
            "polygon",
            "arbitrum",
            "optimism"
          ],
          "description": "EVM network to read; aliases and CAIP-2 identifiers are also accepted."
        }
      },
      "required": [
        "address"
      ]
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "properties": {
        "address": {
          "type": "string"
        },
        "network": {
          "type": "object"
        },
        "block_number": {
          "type": "integer"
        },
        "native": {
          "type": "object"
        },
        "usdc": {
          "type": "object"
        },
        "x402_receipt": {
          "type": "object"
        }
      },
      "required": [
        "address",
        "network",
        "block_number",
        "native",
        "usdc"
      ]
    }
  },
  "required": [
    "type"
  ]
}