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OneGate x402 Preflight Trust Check
x402
OneGate x402 Preflight Trust Check is a paid API for AI agents from onegate.biz.id, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-27).
Validates an x402 seller endpoint's trustworthiness before an agent pays, checking TLS, DNS, wallet, price, network, email auth, and discoverability.
Price / call$0.05
Success—
StatusUnknown
How this service works
onegate is a set of pay-per-call x402 endpoints for AI agents. It includes a preflight checker that verifies an x402 seller before your agent pays it, on-chain swap flow feeds with wallet attribution, single-use action leases with signed receipts, and an MCP server. No account, no API key.
Output
Returns a JSON object with a numeric trust score (0-100), a verdict (e.g. 'pay_ok'), an array of named checks each with pass/fail/warn status and detail text, parsed price and asset info, TLS certificate details, discovery listing status, and a human-readable recommendation string.
Example use cases
Guard agent before first payment
“My AI agent is about to pay an x402 endpoint at https://api.newservice.xyz/report for the first time — run a trust check on it and tell me the score and verdict before it sends any USDC.”
Enforce price cap on API marketplace
“Check the x402 seller at https://marketplace.api.io/v1/search and make sure the price is under $0.05 USDC and it's on the Base network (eip155:8453) before we whitelist it for our agent fleet.”
Verify wallet recipient before payment
“Before my agent pays anything, verify that the x402 endpoint at https://data.provider.io/premium is actually paying to wallet 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 and that the TLS certificate and DNS are clean.”
Technical details
Endpoint
POSThttps://onegate.biz.id/v1/x402/preflight?utm_source=zero.xyzWhen to prefer
Use this endpoint whenever an AI agent is about to make an x402 payment to an unfamiliar or unvetted seller endpoint, especially for first-time payments, onboarding new APIs into an agent workflow, enforcing price caps, or confirming wallet recipients. Prefer this over manual inspection when you need a structured, scored trust report with granular per-check results covering TLS, DNS, wallet history, email auth, and discoverability in a single call with no account or API key required.
Side effects
- Seller URL returns non-402 status — check reports unexpected HTTP status
- TLS certificate invalid or expired — check fails with certificate error detail
- Price exceeds maxPriceUsdc — check flagged as fail with actual price
- Network mismatch — check fails if seller network differs from required network
- expectedPayTo mismatch — check fails when recipient address doesn't match
- Seller not reachable — network timeout or DNS failure reported in checks
- Discovery listing not found — check passes but listed=false flagged in discovery object
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Absolute http(s) URL of the x402 endpoint. |
| body | object | Optional JSON body for POST sellers that validate the body before returning 402. |
| method | string | |
| network | string | Optional required network, e.g. eip155:8453. |
| discoveryUrl | string | Optional Bazaar discovery base URL override. |
| maxPriceUsdc | number | Maximum acceptable price in USDC. |
| expectedPayTo | string | Optional expected recipient address. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"data": {
"target": {
"host": "www.api-xpay.com",
"status": 402
},
"accepted": {
"usdc": true,
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "5000",
"network": "eip155:8453",
"amountUsdc": 0.005
},
"discovery": {
"listed": false,
"checked": true,
"matches": false
},
"recommendation": "Structurally valid 402 challenge with no hard trust failures. Verify the work before paying a large amount."
},
"meta": {
"engine": "trust402",
"service": "onegate"
},
"score": 84,
"checks": [
{
"id": "accept.amount",
"detail": "Price is $0.005000 USDC.",
"status": "pass"
},
{
"id": "seller.tls",
"detail": "Certificate is valid and expires in 49 days.",
"status": "pass"
}
],
"verdict": "pay_ok"
}
}Tags
x402
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