x402 audit of a seller
x402 audit of a seller. 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.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://agent-data-tools.revmesh2074.workers.dev/check/x402-seller
| Category | Code and developer |
|---|---|
| Provider host | agent-data-tools.revmesh2074.workers.dev |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"url": "https://agent-data-tools.revmesh2074.workers.dev/btc-fees"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"url": {
"description": "Absolute public https URL of the paid endpoint, with any query it needs",
"examples": [
"https://agent-data-tools.revmesh2074.workers.dev/btc-fees"
],
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"domain": {
"properties": {
"ageDays": {
"type": "number"
},
"flags": {
"items": {
"properties": {
"code": {
"type": "string"
},
"level": {
"type": "string"
},
"message": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"name": {
"type": "string"
},
"registeredAt": {
"type": "string"
},
"trust": {
"type": "string"
}
},
"type": "object"
},
"limitations": {
"items": {},
"type": "array"
},
"note": {
"type": "string"
},
"payees": {
"items": {
"properties": {
"accountNonce": {
"type": "number"
},
"accountType": {
"type": "string"
},
"network": {
"type": "string"
},
"payTo": {
"type": "string"
},
"sanctionMatches": {
"items": {},
"type": "array"
},
"sanctioned": {
"type": "boolean"
}
},
"type": "object"
},
"type": "array"
},
"reasons": {
"items": {},
"type": "array"
},
"sanctionsListDate": {
"type": "string"
},
"terms": {
"properties": {
"accepts": {
"items": {
"properties": {
"assetIsNativeUsdc": {
"type": "boolean"
},
"network": {
"type": "string"
},
"payTo": {
"type": "string"
},
"priceUsd": {
"type": "number"
}
},
"type": "object"
},
"type": "array"
},
"paywalled": {
"type": "boolean"
},
"score": {
"type": "number"
},
"x402Version": {
"type": "number"
}
},
"type": "object"
},
"url": {
"type": "string"
},
"verdict": {
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}