ERC-20 allowance an owner has granted a spender for one token
ERC-20 allowance an owner has granted a spender for one token: raw and human amount, with the token's symbol and decimals. unlimited is true when the allowance is at least 2^255, the usual approve-everything value. Read-only.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
25 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
GET https://api.sitecheck-api.workers.dev/api/evm/allowance
| Category | Market data |
|---|---|
| Provider host | api.sitecheck-api.workers.dev |
| Networks | eip155:5042, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| 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 |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.002 | 25 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"chain": "base",
"owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"spender": "0x2626664c2603336E57B271c5C0b26F421741e481",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "base (default), ethereum, arbitrum, optimism or polygon",
"type": "string"
},
"owner": {
"description": "Token owner, 0x\u2026",
"type": "string"
},
"spender": {
"description": "Spender, 0x\u2026",
"type": "string"
},
"token": {
"description": "ERC-20 contract, 0x\u2026",
"type": "string"
}
},
"required": [
"owner",
"token",
"spender"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}