How much of a token a spender is still allowed to move on an owner's behalf, and
How much of a token a spender is still allowed to move on an owner's behalf, and whether that approval is unlimited. The check to run before an approve, and the one that finds forgotten infinite approvals. Via eth_call (allowance).
Answeringour last check, 2026-09-24
1 of 1checks answered this week
19 msmedian answer time
$0.005listed price per call
$0.005price 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://flat-rate-llm.kikoribera03.workers.dev/v1/evm/erc20-allowance
| Category | Market data |
|---|---|
| Provider host | flat-rate-llm.kikoribera03.workers.dev |
| Networks | eip155:137, eip155:42161, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.005 | 19 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"chain": "base",
"owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"spender": "0x2626664c2603336E57B271c5C0b26F421741e481",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "base | ethereum | polygon | arbitrum | optimism.",
"type": "string"
},
"owner": {
"description": "Address that owns the tokens.",
"type": "string"
},
"spender": {
"description": "Address allowed to spend them.",
"type": "string"
},
"token": {
"description": "ERC20 contract address.",
"type": "string"
}
},
"required": [
"owner",
"spender",
"token"
],
"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"
}