80trust / 100
Base Allowance
by AllTheBot ERC-20 allowance in Onchain & crypto
x402 APIPassing, checked 4 h ago
ERC-20 allowance and token approval check on Base: how much a spender contract is approved to move from an owner wallet, with unlimited-approval detection. Run it before a swap, a bridge or a transferFrom.
GET https://api.zkrobotics.fr/x402/base/allowance
Last 30 days
All checks passedSome failedAll failedNot checked
- Uptime
- 100%
- Response time
- 61 ms typical, 61 ms slowest 5%
- Last check
- 4 h ago
- Next check
- any minute now
How to call it
# See the payment challenge (nothing is charged)
curl -i -X GET "https://api.zkrobotics.fr/x402/base/allowance?owner=0x60fd97850059dF9600C4E26f09aC58EF51561963&spender=0x0000000000000000000000000000000000000001&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
const client = new x402Client().register(
"eip155:8453",
new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.zkrobotics.fr%2Fx402%2Fbase%2Fallowance
const res = await pay("https://api.zkrobotics.fr/x402/base/allowance?owner=0x60fd97850059dF9600C4E26f09aC58EF51561963&spender=0x0000000000000000000000000000000000000001&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913");
console.log(await res.json());Example input
{
"owner": "0x60fd97850059dF9600C4E26f09aC58EF51561963",
"spender": "0x0000000000000000000000000000000000000001",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}Example output
{
"allowance": "0",
"allowance_raw": "0",
"network": "base",
"owner": "0x60fd97850059dF9600C4E26f09aC58EF51561963",
"spender": "0x0000000000000000000000000000000000000001",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"unlimited": false
}Security scan
- No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 4 h ago | Passed | 402 | 61 ms | $0.003 |