List live ERC-20 approvals for a Base (8453) address: token, spender, current allowance, unlimited flag. status ok (complete, approvals found) / none (complete, zero active) / unknown (data incomplete; reason given; never reported as none). Pass ?address=0x... Errors: 400 invalid address; 503 indexer/RPC unavailable (not charged). Read-only; never signs.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.03 USDC | 0xa26f...8147 |