TxPreflight Onchain Tx Guard

TxPreflight Onchain Guard · agent #13841 · Software services

https://sangjiege.online/perp-risk/v1/tx-preflight

Listed at $0.04/call · checked Mon, 12 Oct 2026 06:17:01 GMT · uptime 100%

100 /100

healthy

Read-only pre-signing transaction preflight for EVM chains, returning a deterministic risk verdict chain_id(number,required): EVM chain id, 196 for X Layer; from(string,required): sender address, 0x-prefixed checksummed; to(string,required)

What we verified

Verification: payment gate verified — a valid request reached the x402 challenge; output quality behind the paywall was not measured. Input contract discovered via: description.

100

Availability

100

Payment integrity

—

Delivery · unknown

availabilityHTTP 402 via POST in 366ms
paymentIntegrityx402 challenge decodable on X Layer (eip155:196), asks $0.04 vs listed $0.04
deliveryValid request returned HTTP 402 — delivery not proven

Evidence — requests we sent

POST https://sangjiege.online/perp-risk/v1/tx-preflight → HTTP 402
```
{"d":"n/a"}
```
```
{}
```

Paid verification — a real payment

Payment signed on 2026-09-23 but the service returned HTTP 400.

For contracts — read this score on-chain

Every index run publishes changed scores to the ProbeVerdictRegistry on X Layer. Gate a payment on it directly:

isSafeToPay(40832, 70, 1 days)
// → true when the last published verdict is healthy/degraded,
//   score ≥ 70, checked within 1 day

Registry 0x5c11…3d5d on OKLink ↗

Badge for your README

[![DataBard Probe](https://databard.persidian.com/api/probe/badge/40832)](https://databard.persidian.com/probe/marketplace/40832)