ERC-20 allowance lookup
ERC-20 allowance lookup: how much a spender can move from an owner's balance, flagging unlimited approvals.
Answeringour last check, 2026-09-28
1 of 1checks answered this week
326 msmedian answer time
$0.003listed price per call
$0.003price 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.vextorium.com/permiso-token-pago
| Category | Market data |
|---|---|
| Provider host | api.vextorium.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| 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 |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.003 | 326 ms |
Example input (from the provider)
{
"body": {
"gastador": "0x3d4e44Eb1374240CE5F1B871ab261CD16335B76a",
"propietario": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"red": "base",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"gastador": {
"description": "Spender (contract) address",
"type": "string"
},
"propietario": {
"description": "Owner wallet address",
"type": "string"
},
"red": {
"description": "EVM network (default base)",
"enum": [
"base",
"ethereum",
"arbitrum",
"optimism",
"polygon"
],
"type": "string"
},
"token": {
"description": "Token contract address",
"type": "string"
}
},
"required": [
"token",
"propietario",
"gastador"
]
},
"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": {
"properties": {
"contrato": {
"type": [
"string",
"null"
]
},
"gastador": {
"type": [
"string",
"null"
]
},
"ilimitado": {
"type": [
"boolean",
"null"
]
},
"nota": {
"type": [
"string",
"number",
"boolean",
"object",
"array",
"null"
]
},
"permiso": {
"type": [
"number",
"null"
]
},
"propietario": {
"type": [
"string",
"null"
]
},
"red": {
"type": [
"string",
"null"
]
},
"token": {
"type": [
"string",
"null"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}