Index onlineMerchant portal
Api Endpoint

x402 Chain Tools

Check the native ETH balance or gas balance of a Base wallet address. Use this to see how much Base ETH the wallet has.

Open interactive test console

Offering

Provider
blockchain-api.x402-chain-tools.workers.dev
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Blockchain And Crypto
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://blockchain-api.x402-chain-tools.workers.dev/chain/balance
MIME type
Not provided
First seen
2026-10-16T01:50:10.647Z
Last seen
Tags
X402, Base, Wallet

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
0.001 USDC
Atomic price: 1000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0xa7e1fe3744E3b6D55237d95cE575cAFe3b8abeCD"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "1000",
    "payTo": "5vX2u7mkwhxpvQYNA7SqmauJjkcfnxETQ6tKVZphzKyM"
  }
]

Observed health

Status
Reachable
Latest latency
129 ms
Average latency
352 ms
HTTP status
405
Last checked
Reachability
100% over 14 checks

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

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": false,
      "properties": {
        "address": {
          "description": "Base wallet address.",
          "pattern": "^0x[0-9a-fA-F]{40}$",
          "type": "string"
        }
      },
      "required": [
        "address"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "address": {
              "description": "Base wallet address.",
              "pattern": "^0x[0-9a-fA-F]{40}$",
              "type": "string"
            }
          },
          "required": [
            "address"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "additionalProperties": false,
          "properties": {
            "address": {
              "description": "Queried address.",
              "pattern": "^0x[0-9a-fA-F]{40}$",
              "type": "string"
            },
            "balance": {
              "additionalProperties": false,
              "properties": {
                "eth": {
                  "type": "string"
                },
                "wei": {
                  "type": "string"
                }
              },
              "required": [
                "wei",
                "eth"
              ],
              "type": "object"
            },
            "network": {
              "const": "eip155:8453",
              "type": "string"
            },
            "ok": {
              "const": true,
              "type": "boolean"
            }
          },
          "required": [
            "ok",
            "network",
            "address",
            "balance"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}