Vextorium · Build an unsigned EVM transaction
https://api.vextorium.com/v1/build-transactionOverview
Build an EVM transaction ready to sign (never signed or sent): native transfer, ERC-20 transfer or ERC-20 approve, with to, data, value, nonce, chainId, estimated gas and current EIP-1559 fees, plus a simulation that warns if it would revert and the estimated cost.
Protocol
x402 (POST)
Price
—
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
crypto/wallet
Provider
vextorium
Source
bazaar
Indexed
2026-10-03 22:23:32
Health
Status
healthy
Latency (p50)
157ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-10-05 03:29:58
Last Healthy
2026-10-05 03:29:58
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-05 03:29:58 | healthy | 402 | 157ms | |
| 2026-10-04 16:09:59 | healthy | 402 | 189ms | |
| 2026-10-04 09:34:45 | healthy | 402 | 75ms |