Get an ERC-20 token balance for a Base address
Get an ERC-20 token balance for a Base address.
1000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-01
updated
Provider
blockchain-api.x402-chain-tools.workers.dev · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0xa7e1fe3744E3b6D55237d95cE575cAFe3b8abeCD",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "1000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "5vX2u7mkwhxpvQYNA7SqmauJjkcfnxETQ6tKVZphzKyM",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "1000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"address": "0x0000000000000000000000000000000000000001",
"token": "0x0000000000000000000000000000000000000002"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"address": "0x0000000000000000000000000000000000000001",
"balance": {
"decimals": 6,
"formatted": "0",
"raw": "0"
},
"network": "eip155:8453",
"ok": true,
"token": "0x0000000000000000000000000000000000000002"
},
"type": "json"
}
},
"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"
},
"token": {
"description": "ERC-20 token contract address on Base.",
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
}
},
"required": [
"address",
"token"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"address": {
"description": "Queried wallet address.",
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"balance": {
"additionalProperties": false,
"properties": {
"decimals": {
"minimum": 0,
"type": "integer"
},
"formatted": {
"type": "string"
},
"raw": {
"type": "string"
}
},
"required": [
"raw",
"decimals",
"formatted"
],
"type": "object"
},
"network": {
"const": "eip155:8453",
"type": "string"
},
"ok": {
"const": true,
"type": "boolean"
},
"token": {
"description": "Queried token contract.",
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
}
},
"required": [
"ok",
"network",
"address",
"token",
"balance"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://blockchain-api.x402-chain-tools.workers.dev/chain/token-balance" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://blockchain-api.x402-chain-tools.workers.dev/chain/token-balance");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://blockchain-api.x402-chain-tools.workers.dev/chain/token-balance")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/8172.json, and this resource appears in /discovery/resources and /discovery/search.