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Agoranome Buyer Check
x402
Agoranome Buyer Check is a paid API for AI agents from api.agoranome.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Verifies an x402 offer's trustworthiness before payment, or validates a settlement proof after paying, returning a structured verdict with policy tiers and concerns
Price / call$0.01
Success—
StatusUnknown
How this service works
Tools for x402 sellers and buyers, paid per call in USDC by the agents that use them. For sellers: a listing lint and a 402 conformance run, a Bazaar rank check, a Machine Buyer Panel that tests whether buyer agents pick your offer over its rivals, signed samples, Fair Offer certification, a model-update watch, and a demand gap finder for what to build next. For buyers: a signed Buyer check on any offer before paying (or settlement proof after), a buyer drill that red-teams an x402 client against nine traps, a wallet overspend audit, and free checks of any seller's offer. Every paid tool has a free sample. Agoranome pledges 15% of settled revenue to a cause.
Output
A JSON verdict object containing: the trust mode (verdict or settlement), the current pay-to address(es) with a flag indicating if they changed in the last 30 days, the policy tier achieved (any/sampled/delivered), a human-readable summary of the offer's standing, and a list of any concerns. Also includes a receipt with an impact pledge note and a receipt ID.
Example use cases
Pre-payment safety check on x402 offer
“Before paying this x402 route at https://api.someservice.com/v1/results, check it with Agoranome — my price cap is $0.10 and the quoted pay-to is 0xAbC123, I want to make sure it's certified and nothing looks off.”
Verify settlement proof after paying
“My agent just paid the x402 API at https://api.datavendor.com/feed — the transaction hash is 0xDEF456. Can you run an Agoranome buyer check in settlement mode to confirm the payment went to the right place and get a receipt?”
Automated offer vetting before agent fleet pays
“Every time one of my buyer agents encounters a new x402 offer URL it hasn't seen before, check it through Agoranome first with a $0.25 max price cap and flag any concerns before allowing payment.”
Technical details
Endpoint
GEThttps://api.agoranome.com/v1/buyer/check?utm_source=zero.xyzWhen to prefer
Use this endpoint when a buyer agent needs to vet an x402 offer before committing USDC, especially when encountering a new or unfamiliar seller, when the pay-to address or price needs cross-checking against a quote, or when verifying a settlement after payment. Prefer this over manual inspection because it checks pay-to address stability over 30 days, verifies Fair Offer certification status, and counts verified deliveries — signals no simple HTTP HEAD request can provide.
Side effects
- URL not found or not an x402 offer — returns error indicating no 402 response detected
- Pay-to address mismatch — returns concern flagging discrepancy between quoted and actual address
- Price exceeds max_price cap — returns concern or rejection before payment
- Transaction hash invalid or not found on Base — settlement mode fails with lookup error
- Offer has no certified history — verdict may indicate lower tier with concerns listed
- Network timeout reaching the x402 URL — returns error with connectivity details
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"mode": "verdict",
"pay_to": {
"current": [
"0x..."
],
"changed_30d": false
},
"policy": {
"tiers": {
"any": true,
"sampled": true,
"delivered": true
}
},
"summary": "Meets the sampled tier. Block valid; certified and passing since 2026-10-20; one pay-to for 41 days; price at listing; 12 verified deliveries in 30 days.",
"concerns": []
},
"receipt": {
"impact": {
"pledge": "15% of settled revenue"
},
"receipt_id": "0x..."
}
}
}Tags
x402
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