ERC-20 token balance of a Base mainnet address, incl
ERC-20 token balance of a Base mainnet address, incl. symbol, decimals, balance_formatted.
Asked 10.0x its listed price for its own exampleour last check, 2026-10-19
1 of 1checks answered this week
664 msmedian answer time
$0.001listed price per call
$0.01price 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
GET https://x402-data-api.sigrunner.workers.dev/chain/token-balance
| Category | Market data |
|---|---|
| Provider host | x402-data-api.sigrunner.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-19 | valid payment request | 402 | $0.01 | 664 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0x4200000000000000000000000000000000000006",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "0x-prefixed 20-byte holder address",
"type": "string"
},
"token": {
"description": "0x-prefixed 20-byte ERC-20 contract address",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"type": "string"
},
"balance_formatted": {
"type": "number"
},
"balance_raw": {
"type": "string"
},
"chain": {
"type": "string"
},
"decimals": {
"type": "integer"
},
"symbol": {
"type": "string"
},
"token": {
"type": "string"
}
},
"required": [
"address",
"token",
"symbol",
"decimals",
"balance_raw",
"balance_formatted",
"chain"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}