SERVICE / DETAILsearch

Data Lookup API

GET x402-seller.onrender.com/chain/balance

OPEN SERVICE ↗
SONAR SCORE0.841
LIVE PRICE0.012000
BAZAAR LIVEcompatible
CDP INDEXEDno
DECISION EVIDENCE

Why an agent can trust this route.

44 observations in the last 24h
HANDSHAKE SUCCESS97.7%402 challenge reachable
PAID DELIVERY0.0%settlement observed
P90 LATENCY2586msrecent response window
PRICE DRIFT0.0%advertised vs observed

Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.

SONAR PROBE HISTORY / 30D

Observed outcomes

JSON ↗
LIVE ENDPOINT METADATA

Check a wallet's live balance on Base mainnet: native ETH (e.g. to confirm it has enough for gas) plus an optional ERC20 token balance (e.g. USDC) when a token contract address is supplied. Sourced from Base's official public RPC.

Resource: x402-seller.onrender.com/chain/balance

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xbd61dfb01f81c91f02b0ccd51b0220e0c8918639

Payment methods: — · Last validation: 2026-09-13 23:17:03.618+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET"
        ],
        "type": "string"
      },
      "queryParams": {
        "type": "object",
        "required": [
          "address"
        ],
        "properties": {
          "token": {
            "type": "string",
            "description": "Optional ERC20 token contract address to also check"
          },
          "address": {
            "type": "string",
            "description": "Wallet address (0x...)"
          }
        }
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object",
        "properties": {
          "token": {
            "type": [
              "object",
              "null"
            ]
          },
          "source": {
            "type": "string"
          },
          "address": {
            "type": "string"
          },
          "network": {
            "type": "string"
          },
          "ethBalance": {
            "type": "number"
          }
        }
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xbd61dfb01f81c91f02b0ccd51b0220e0c8918639",
        "amount": "12000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0xbd61dfb01f81c91f02b0ccd51b0220e0c8918639",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "12000"
    }
  ]
}
METADATA PROVENANCE

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.