Vextorium · Decode a function/event signature
https://api.vextorium.com/v1/decode-selectorOverview
Translates a 4-byte function selector (e.g. 0xa9059cbb) or a 32-byte event topic into its human-readable signature (e.g. transfer(address,uint256)). Essential for an agent reading or verifying transactions. Live from 4byte.directory.
Protocol
x402 (POST)
Price
—
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
crypto/onchain
Provider
vextorium
Source
bazaar
Indexed
2026-10-03 21:23:38
Health
Status
healthy
Latency (p50)
186ms
Uptime (30d)
100.0%
Reliability Score
97/100
Last Checked
2026-10-08 08:51:09
Last Healthy
2026-10-08 08:51:09
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-08 08:51:09 | healthy | 402 | 186ms | |
| 2026-10-07 17:51:41 | healthy | 402 | 189ms | |
| 2026-10-07 10:44:09 | healthy | 402 | 406ms | |
| 2026-10-06 19:22:45 | healthy | 402 | 168ms | |
| 2026-10-06 07:12:04 | healthy | 402 | 168ms | |
| 2026-10-05 21:58:46 | healthy | 402 | 151ms |