Read a Base wallet native ETH balance and up to five ERC20 token balances at one
Read a Base wallet native ETH balance and up to five ERC20 token balances at one pinned block. Separate balance lookups each answer at whatever height they happened to see, so they cannot be compared; these are all read at the same block and the block is in the response. Replaces six calls with one.
Answeringour last check, 2026-10-02
1 of 1checks answered this week
2262 msmedian answer time
$0.008listed price per call
$0.008price 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://api.zfinia.com/x402/v1/base-wallet-snapshot
| Category | Market data |
|---|---|
| Provider host | api.zfinia.com |
| 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 |
|---|---|---|---|---|
| 2026-10-02 | valid payment request | 402 | $0.008 | 2262 ms |
Example input (from the provider)
{
"body": {
"tokens": [
"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
],
"wallet": "0x25e8245f07d5e4873987293dad666afbe56a9608"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"tokens": {
"description": "Up to five ERC20 contract addresses to read balances for.",
"items": {
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"maxItems": 5,
"type": "array"
},
"wallet": {
"description": "Wallet address to read.",
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
}
},
"required": [
"wallet"
],
"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": {
"block_hash": {
"description": "Hash of that block.",
"type": "string"
},
"block_number": {
"description": "Decimal block height every value in this response was read at.",
"type": "string"
},
"chain": {
"const": "base"
},
"chain_id": {
"const": 8453
},
"native_balance_wei": {
"type": "string"
},
"request_id": {
"description": "Delivery request identifier; also returned in x-foundry-request-id.",
"type": "string"
},
"rpc_calls": {
"description": "Upstream RPC calls this response cost.",
"type": "integer"
},
"service_id": {
"description": "Canonical service identifier.",
"type": "string"
},
"service_version": {
"description": "Version of the invoked service.",
"type": "string"
},
"tokens": {
"items": {
"additionalProperties": false,
"properties": {
"balance_raw": {
"description": "Raw balance in the token smallest unit; apply decimals yourself.",
"type": "string"
},
"token": {
"type": "string"
}
},
"required": [
"token",
"balance_raw"
],
"type": "object"
},
"type": "array"
},
"wallet": {
"type": "string"
}
},
"required": [
"request_id",
"service_id",
"service_version",
"chain",
"chain_id",
"block_number",
"block_hash",
"rpc_calls",
"wallet",
"native_balance_wei",
"tokens"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}