List live ERC-20 approvals for a Base (8453) address: token, spender, current al...
https://x402-research-iota.vercel.app/api/x402/approval-enumerateOverview
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.
Protocol
x402
Price
$0.03
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
x402-research-iota
Source
bazaar
Indexed
2026-10-24 19:27:36
Health
Status
healthy
Latency (p50)
521ms
Uptime (30d)
100.0%
Reliability Score
87/100
Last Checked
2026-10-30 03:17:50
Last Healthy
2026-10-30 03:17:50
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"address": "0xf9623fab6780984eacac443158c0309519451afa"
},
"type": "http"
}
Output Schema
{
"example": {
"address": "0xf962...1afa",
"approvals": [
{
"allowance": "115792089237316195423570985008687907853269984665640564039457584007913129639935",
"allowanceFormatted": "unlimited",
"decimals": 6,
"lastApprovalBlock": 30000000,
"lastApprovalTx": "0x...",
"risk": "high",
"spender": "0x111111125421ca6dc452d289314280a0f8842a65",
"symbol": "USDC",
"token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"unlimited": true
}
],
"chainId": 8453,
"complete": true,
"counts": {
"active": 1,
"approvalEvents": 12,
"pairsChecked": 5,
"pairsSeen": 5,
"unreadable": 0
},
"coverageNote": "ERC-20 allowances only: Permit2 sub-allowances and NFT operator approvals (setApprovalForAll) are not covered. \"none\" does not mean the wallet is safe.",
"highRiskCount": 1,
"reason": null,
"reasons": [],
"signed": false,
"status": "ok"
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-30 03:17:50 | healthy | 402 | 3908ms | |
| 2026-10-30 02:07:25 | healthy | 402 | 335ms | |
| 2026-10-30 01:08:45 | healthy | 402 | 668ms | |
| 2026-10-30 00:07:40 | healthy | 402 | 222ms | |
| 2026-10-29 23:07:11 | healthy | 402 | 587ms | |
| 2026-10-29 22:07:11 | healthy | 402 | 319ms | |
| 2026-10-29 21:05:37 | healthy | 402 | 439ms | |
| 2026-10-29 20:05:10 | healthy | 402 | 1213ms | |
| 2026-10-29 19:07:18 | healthy | 402 | 300ms | |
| 2026-10-29 18:05:23 | healthy | 402 | 1368ms | |
| 2026-10-29 17:08:36 | healthy | 402 | 391ms | |
| 2026-10-29 16:05:41 | healthy | 402 | 473ms | |
| 2026-10-29 15:04:47 | healthy | 402 | 521ms | |
| 2026-10-29 14:07:32 | healthy | 402 | 397ms | |
| 2026-10-29 13:07:31 | healthy | 402 | 622ms | |
| 2026-10-29 12:04:24 | healthy | 402 | 619ms | |
| 2026-10-29 11:08:06 | healthy | 402 | 1599ms | |
| 2026-10-29 10:07:46 | healthy | 402 | 330ms | |
| 2026-10-29 09:04:37 | healthy | 402 | 1459ms | |
| 2026-10-29 08:07:02 | healthy | 402 | 359ms |