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onegate — x402 Seller Verification & Trust Check
x402
onegate — x402 Seller Verification & Trust Check is a paid API for AI agents from onegate.biz.id, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-27).
Performs a multi-factor trust check on an x402 seller endpoint before an agent pays it, covering challenge validity, recipient wallet, price, network, TLS, DNS, email auth, and wallet history.
Price / call$0.03
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: ok (boolean success), charged (whether the $0.03 USDC fee was taken), decision (ALLOW or DENY string indicating seller trustworthiness), and simulation (level and will_revert flag indicating whether the on-chain swap would revert).
Example use cases
Pre-payment seller safety screen
“My agent is about to pay an x402 seller on Base for a token swap — chain eip155:8453, paying 500000 units of USDC in and expecting WETH out. Can you run a full trust check on that seller before we send any money?”
Wallet history audit before DeFi swap
“Before my agent swaps 2000000 USDC for DAI on Optimism (eip155:10) via this x402 endpoint, check the recipient wallet's history and tell me if the decision is ALLOW or DENY.”
TLS and DNS integrity verification
“I need to verify this x402 seller on Polygon (eip155:137) — make sure the TLS, DNS, and 402 challenge all check out for a 100000 unit token_in of MATIC before we commit to the payment.”
Technical details
Endpoint
POSThttps://onegate.biz.id/v1/gate/swap?utm_source=zero.xyzWhen to prefer
Use this endpoint when your agent is about to execute an x402 pay-per-call payment and needs to screen the seller for trust signals before committing funds. It is purpose-built for the x402 protocol ecosystem, covering on-chain, network, and identity checks in a single call. Prefer it over generic URL validators or wallet lookup tools when the specific concern is whether an x402 seller's challenge, recipient wallet, price, and infrastructure are legitimate.
Side effects
- Insufficient USDC balance for the $0.03 check fee — payment rejected
- Invalid CAIP-2 chain ID format — validation error
- Malformed token address (not 0x… format) — input rejection
- Seller endpoint unreachable — TLS/DNS check fails, decision may be DENY
- Network timeout when fetching seller's 402 challenge
- Simulation unavailable for certain chains — simulation.level returns 'not_run'
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | CAIP-2 network id |
| router | string | optional |
| min_out | string | optional, smallest units |
| deadline | string | optional, unix seconds |
| token_in | string | 0x… token address |
| amount_in | string | integer string, smallest units |
| token_out | string | 0x… token address |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"charged": true,
"decision": "ALLOW",
"simulation": {
"level": "not_run",
"will_revert": null
}
}
}Tags
x402
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