Check whether a URL is safe to fetch, read, sign in to or pay before you do: dom...
https://how.is/v1/url/preflightOverview
Check whether a URL is safe to fetch, read, sign in to or pay before you do: domain age, look-alike, blocklists, HTTPS, robots.txt for your agent and the site's own x402 price.
Protocol
x402 (POST)
Price
$0.0050
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
how.is
Source
bazaar
Indexed
2026-10-27 23:28:43
Health
Status
healthy
Latency (p50)
291ms
Uptime (30d)
100.0%
Reliability Score
87/100
Last Checked
2026-10-28 00:21:06
Last Healthy
2026-10-28 00:21:06
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"body": {
"url": "https://github.com"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Output Schema
{
"example": {
"data": {
"_shape": "data: verdict (likely_safe/caution/high_risk/inconclusive), risk_score, safe_to{fetch,read,sign_in,pay} each yes/caution/no/unknown, actions{...: {answer, why}}, reasons[{risk, why}], domain_age_days, newborn, lookalike, https_valid, robots{allowed, token, status}, http{status, content_type, redirects}, x402{offers[{price_usd, network, pay_to}]}, bot_policy, not_checked[]."
},
"receipt": {
"charge_usd": 0.005,
"rail": "x402",
"settlement_tx": "0x…",
"tool": "preflight"
},
"result": "URL pre-flight for the requested subject"
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-28 00:21:06 | healthy | 402 | 291ms |