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x402 Seller Audit — Vet a Paid Endpoint Before Buying
x402
x402 Seller Audit — Vet a Paid Endpoint Before Buying is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Audits an x402 paid endpoint's payment terms, payTo addresses, and seller domain before an agent commits to paying, returning a pass/review verdict with reasons.
Price / call$0.01
Success—
StatusUnknown
How this service works
Audit an x402 seller before an agent buys from it: decodes the endpoint's 402 terms without paying, OFAC-screens each payTo address, reads its account type and nonce on the payment network, checks the seller domain's age and trust flags, and flags non-USDC assets and high prices. One block, review or pass verdict with reasons. Never signs. Screening aid, not legal advice. Use before the first payment to an unfamiliar x402 seller.
Output
Returns a structured audit block containing: the decoded x402 payment terms (price in USD, payTo addresses, network, USDC flag, score), OFAC sanctions screening results per payee (sanctioned boolean, account type, nonce, sanction matches), domain trust data (age in days, trust label, flags with severity levels), a list of reasons, a pass/review verdict string, known limitations, and the date of the sanctions list used. Never signs or initiates a payment.
Example use cases
First-time payment safety check
“I found a new x402 API I want my agent to use at https://api.newprovider.io/insights — can you audit it before we pay anything? I want to know if the payTo wallet is OFAC-clean, what the terms look like, and whether the domain seems trustworthy.”
Flagging a suspicious high-price seller
“This x402 endpoint at https://suspiciousdata.xyz/feed is charging a lot more than others in its category — can you vet it and tell me if the price is unusually high, whether the domain is fresh, and whether the payee address raises any red flags?”
Pre-flight check in an automated agent workflow
“Before my agent auto-pays any new x402 seller it hasn't used before, run an audit on https://newpaidtool.io/convert to confirm it passes sanctions screening, uses native USDC, and gets a pass verdict — halt if it gets a review flag.”
Technical details
Endpoint
GEThttps://agent-data-tools.revmesh2074.workers.dev/check/x402-seller?utm_source=zero.xyzWhen to prefer
Use this endpoint before any first payment to an unfamiliar x402 seller, especially in automated agent workflows where the agent would otherwise pay without human review. Prefer this over a generic OFAC address check when you also need to inspect payment terms, domain trust, asset type, and price — it combines all pre-payment signals in one call. Do not use as a substitute for legal compliance review; treat verdict as a screening aid only.
Side effects
- Target URL does not return a 402 response — terms cannot be decoded
- Target URL is unreachable or times out — no audit possible
- Domain WHOIS data unavailable — domain age and trust fields may be missing
- OFAC screening service temporarily unavailable — sanctions result may be incomplete
- Malformed x402 header on target endpoint — terms object may be empty or partial
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | Absolute public https URL of the paid endpoint, with any query it needs |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| url | string | |
| note | string | |
| terms | object | |
| domain | object | |
| payees | array | |
| reasons | array | |
| verdict | string | |
| limitations | array | |
| sanctionsListDate | string |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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