Base ERC-20 Allowance Check
https://base-onchain-tools.dolerite.workers.dev/v1/base/allowanceOverview
ERC-20 allowance on Base: how much a spender may pull from an owner, whether it is an unlimited approval, the owner balance, and how much is actually spendable right now. Defaults to USDC. Query params: owner, spender, optional token.
Protocol
x402
Price
$0.0010
Payment Asset
USDC
Payment Network
base
Category
crypto/security-data
Provider
base-onchain-tools
Source
self-registered
Indexed
2026-08-21 10:28:46
Health
Status
healthy
Latency (p50)
736ms
Uptime (30d)
88.9%
Reliability Score
84.4/100
Last Checked
2026-09-24 16:47:14
Last Healthy
2026-09-24 16:47:14
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-24 16:47:14 | healthy | 402 | 573ms | |
| 2026-09-24 07:00:33 | healthy | 402 | 694ms | |
| 2026-09-24 00:59:58 | error | — | — | fetch failed |
| 2026-09-23 16:08:09 | healthy | 402 | 1436ms | |
| 2026-09-23 07:30:58 | healthy | 402 | 1003ms | |
| 2026-09-23 00:11:24 | healthy | 402 | 736ms | |
| 2026-09-22 17:16:27 | healthy | 402 | 606ms | |
| 2026-09-22 09:01:35 | healthy | 402 | 569ms | |
| 2026-09-22 00:37:53 | healthy | 402 | 1352ms |