Wallet balance on Base or Ethereum
Wallet balance on Base or Ethereum: give an address, get its native ETH plus USDC (and USDT on Ethereum), and any other ERC-20 tokens you list (up to 20), with symbols and decimals applied. Read live from the chain. $0.002 per call; a bad address or an RPC failure is not charged.
Answeringour last check, 2026-10-03
1 of 1checks answered this week
211 msmedian answer time
$0.002listed price per call
$0.002price it asked us
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
POST https://extract.tollkit.dev/chain/balance
| Category | Market data |
|---|---|
| Provider host | extract.tollkit.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-03 | valid payment request | 402 | $0.002 | 211 ms |
Example input (from the provider)
{
"body": {
"address": "0xBbfCE2D320dE6aB328Ba93A771c531ebFC9cE704",
"chain": "base"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"address": {
"description": "Wallet (or contract) address to check.",
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"chain": {
"default": "base",
"description": "Which chain to read: \"base\" (default) or \"ethereum\".",
"enum": [
"base",
"ethereum"
],
"type": "string"
},
"tokens": {
"description": "Extra ERC-20 contract addresses to include.",
"items": {
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"maxItems": 20,
"type": "array"
}
},
"required": [
"address"
],
"type": "object"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"address": {
"type": "string"
},
"block_number": {
"type": "integer"
},
"chain": {
"type": "string"
},
"checked_at": {
"type": "string"
},
"explorer_url": {
"type": "string"
},
"is_contract": {
"type": "boolean"
},
"native": {
"properties": {
"balance": {
"type": "string"
},
"balance_wei": {
"type": "string"
},
"symbol": {
"type": "string"
}
},
"type": "object"
},
"tokens": {
"items": {
"properties": {
"address": {
"type": "string"
},
"balance": {
"type": "string"
},
"balance_raw": {
"type": "string"
},
"decimals": {
"type": "integer"
},
"error": {
"description": "not_erc20 when the address isn't a token.",
"type": "string"
},
"name": {
"type": [
"string",
"null"
]
},
"symbol": {
"type": [
"string",
"null"
]
}
},
"type": "object"
},
"type": "array"
}
},
"required": [
"chain",
"address",
"native",
"tokens",
"block_number"
],
"type": "object"
}
},
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}